./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum40.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum40.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7 --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 a418834dbd1069728d4982a06f4275da717a1d93e3d5061fbbc21c5c3a319ddf --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:49:02,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:49:02,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:49:02,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:49:02,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:49:02,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:49:02,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:49:02,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:49:02,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:49:02,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:49:02,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:49:02,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:49:02,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:49:02,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:49:02,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:49:02,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:49:02,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:49:02,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:49:02,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:49:02,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:49:02,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:49:02,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:49:02,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:49:02,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:49:02,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:49:02,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:49:02,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:49:02,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:49:02,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:49:02,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:49:02,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:49:02,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:49:02,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:49:02,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:49:02,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:49:02,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:49:02,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:49:02,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:49:02,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:49:02,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:49:02,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:49:02,302 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:49:02,328 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:49:02,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:49:02,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:49:02,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:49:02,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:49:02,329 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:49:02,330 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:49:02,330 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:49:02,330 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:49:02,330 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:49:02,330 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:49:02,331 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:49:02,331 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:49:02,331 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:49:02,331 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:49:02,331 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:49:02,332 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:49:02,332 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:49:02,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:49:02,333 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:49:02,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:49:02,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:49:02,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:49:02,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:49:02,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:49:02,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:49:02,334 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:49:02,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:49:02,334 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:49:02,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:49:02,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:49:02,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:49:02,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:49:02,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:49:02,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:49:02,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:49:02,336 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:49:02,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:49:02,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:49:02,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:49:02,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:49:02,337 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a418834dbd1069728d4982a06f4275da717a1d93e3d5061fbbc21c5c3a319ddf [2021-11-25 19:49:02,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:49:02,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:49:02,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:49:02,617 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:49:02,618 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:49:02,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/reducercommutativity/rangesum40.i [2021-11-25 19:49:02,700 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/data/57fc99b23/d6533c971e044eb7ba1934e4036c5a28/FLAG131153947 [2021-11-25 19:49:03,222 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:49:03,223 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/sv-benchmarks/c/reducercommutativity/rangesum40.i [2021-11-25 19:49:03,233 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/data/57fc99b23/d6533c971e044eb7ba1934e4036c5a28/FLAG131153947 [2021-11-25 19:49:03,715 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/data/57fc99b23/d6533c971e044eb7ba1934e4036c5a28 [2021-11-25 19:49:03,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:49:03,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:49:03,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:49:03,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:49:03,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:49:03,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:49:03" (1/1) ... [2021-11-25 19:49:03,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45a2fcdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:03, skipping insertion in model container [2021-11-25 19:49:03,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:49:03" (1/1) ... [2021-11-25 19:49:03,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:49:03,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:49:03,983 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/sv-benchmarks/c/reducercommutativity/rangesum40.i[1465,1478] [2021-11-25 19:49:03,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:49:04,000 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:49:04,048 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/sv-benchmarks/c/reducercommutativity/rangesum40.i[1465,1478] [2021-11-25 19:49:04,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:49:04,066 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:49:04,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:04 WrapperNode [2021-11-25 19:49:04,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:49:04,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:49:04,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:49:04,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:49:04,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:04" (1/1) ... [2021-11-25 19:49:04,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:04" (1/1) ... [2021-11-25 19:49:04,132 INFO L137 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2021-11-25 19:49:04,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:49:04,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:49:04,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:49:04,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:49:04,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:04" (1/1) ... [2021-11-25 19:49:04,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:04" (1/1) ... [2021-11-25 19:49:04,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:04" (1/1) ... [2021-11-25 19:49:04,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:04" (1/1) ... [2021-11-25 19:49:04,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:04" (1/1) ... [2021-11-25 19:49:04,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:04" (1/1) ... [2021-11-25 19:49:04,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:04" (1/1) ... [2021-11-25 19:49:04,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:49:04,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:49:04,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:49:04,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:49:04,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:04" (1/1) ... [2021-11-25 19:49:04,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:49:04,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:49:04,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:49:04,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:49:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:49:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:49:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:49:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:49:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:49:04,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:49:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:49:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2021-11-25 19:49:04,280 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2021-11-25 19:49:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:49:04,389 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:49:04,391 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:49:04,548 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:49:04,590 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:49:04,590 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 19:49:04,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:49:04 BoogieIcfgContainer [2021-11-25 19:49:04,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:49:04,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:49:04,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:49:04,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:49:04,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:49:03" (1/3) ... [2021-11-25 19:49:04,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68bc1c49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:49:04, skipping insertion in model container [2021-11-25 19:49:04,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:04" (2/3) ... [2021-11-25 19:49:04,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68bc1c49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:49:04, skipping insertion in model container [2021-11-25 19:49:04,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:49:04" (3/3) ... [2021-11-25 19:49:04,601 INFO L111 eAbstractionObserver]: Analyzing ICFG rangesum40.i [2021-11-25 19:49:04,606 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:49:04,606 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:49:04,660 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:49:04,669 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:49:04,670 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:49:04,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:49:04,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-25 19:49:04,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:49:04,696 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:49:04,697 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:49:04,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:49:04,703 INFO L85 PathProgramCache]: Analyzing trace with hash -362891911, now seen corresponding path program 1 times [2021-11-25 19:49:04,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:49:04,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085261908] [2021-11-25 19:49:04,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:04,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:49:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:49:04,905 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:49:04,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085261908] [2021-11-25 19:49:04,906 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-25 19:49:04,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847531073] [2021-11-25 19:49:04,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:04,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:49:04,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:49:04,909 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:49:04,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:49:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:49:05,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:49:05,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:49:05,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:49:05,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:49:05,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847531073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:49:05,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:49:05,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:49:05,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95802086] [2021-11-25 19:49:05,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:49:05,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:49:05,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:49:05,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:49:05,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:49:05,237 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-25 19:49:05,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:49:05,323 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-11-25 19:49:05,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:49:05,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2021-11-25 19:49:05,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:49:05,334 INFO L225 Difference]: With dead ends: 33 [2021-11-25 19:49:05,334 INFO L226 Difference]: Without dead ends: 16 [2021-11-25 19:49:05,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:49:05,349 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:49:05,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:49:05,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-25 19:49:05,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-25 19:49:05,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:49:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-11-25 19:49:05,423 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2021-11-25 19:49:05,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:49:05,424 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-11-25 19:49:05,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-25 19:49:05,425 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-11-25 19:49:05,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 19:49:05,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:49:05,451 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:49:05,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:49:05,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-25 19:49:05,659 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:49:05,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:49:05,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1234920756, now seen corresponding path program 1 times [2021-11-25 19:49:05,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:49:05,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407240468] [2021-11-25 19:49:05,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:05,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:49:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:49:05,707 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:49:05,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407240468] [2021-11-25 19:49:05,708 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-25 19:49:05,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739819163] [2021-11-25 19:49:05,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:05,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:49:05,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:49:05,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:49:05,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:49:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:49:05,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:49:05,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:49:05,906 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:49:05,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:49:05,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739819163] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:49:05,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:49:05,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:49:05,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842129198] [2021-11-25 19:49:05,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:49:05,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:49:05,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:49:05,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:49:05,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:49:05,911 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 19:49:05,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:49:05,933 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2021-11-25 19:49:05,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:49:05,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2021-11-25 19:49:05,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:49:05,934 INFO L225 Difference]: With dead ends: 29 [2021-11-25 19:49:05,935 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 19:49:05,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:49:05,937 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:49:05,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:49:05,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 19:49:05,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-25 19:49:05,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:49:05,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-11-25 19:49:05,943 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2021-11-25 19:49:05,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:49:05,944 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-25 19:49:05,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 19:49:05,944 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-11-25 19:49:05,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 19:49:05,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:49:05,946 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:49:05,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:49:06,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:49:06,170 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:49:06,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:49:06,172 INFO L85 PathProgramCache]: Analyzing trace with hash -877476800, now seen corresponding path program 1 times [2021-11-25 19:49:06,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:49:06,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888503503] [2021-11-25 19:49:06,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:06,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:49:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:49:06,246 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:49:06,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888503503] [2021-11-25 19:49:06,249 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-25 19:49:06,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088689418] [2021-11-25 19:49:06,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:06,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:49:06,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:49:06,252 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:49:06,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:49:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:49:06,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:49:06,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:49:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 19:49:06,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:49:06,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088689418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:49:06,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:49:06,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:49:06,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8634674] [2021-11-25 19:49:06,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:49:06,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:49:06,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:49:06,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:49:06,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:49:06,403 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 19:49:06,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:49:06,427 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2021-11-25 19:49:06,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:49:06,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-11-25 19:49:06,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:49:06,435 INFO L225 Difference]: With dead ends: 27 [2021-11-25 19:49:06,435 INFO L226 Difference]: Without dead ends: 18 [2021-11-25 19:49:06,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:49:06,437 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:49:06,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:49:06,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-25 19:49:06,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-25 19:49:06,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:49:06,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-11-25 19:49:06,443 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2021-11-25 19:49:06,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:49:06,445 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-11-25 19:49:06,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 19:49:06,445 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-11-25 19:49:06,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 19:49:06,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:49:06,446 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:49:06,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:49:06,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:49:06,675 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:49:06,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:49:06,676 INFO L85 PathProgramCache]: Analyzing trace with hash 140313158, now seen corresponding path program 1 times [2021-11-25 19:49:06,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:49:06,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451726875] [2021-11-25 19:49:06,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:06,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:49:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:49:06,717 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:49:06,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451726875] [2021-11-25 19:49:06,718 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-25 19:49:06,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986664689] [2021-11-25 19:49:06,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:06,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:49:06,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:49:06,720 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:49:06,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:49:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:49:06,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:49:06,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:49:06,919 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 19:49:06,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:49:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 19:49:07,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986664689] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:49:07,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1807997064] [2021-11-25 19:49:07,055 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:49:07,055 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:49:07,060 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:49:07,065 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:49:07,066 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:49:07,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:07,210 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:49:07,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-25 19:49:07,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:07,283 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:49:07,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 19:49:07,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:07,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-25 19:49:07,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:07,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:07,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:07,581 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-25 19:49:07,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 224 treesize of output 212 [2021-11-25 19:49:07,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 19:49:08,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:08,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 19:49:08,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:08,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-25 19:49:08,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:08,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:08,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:08,777 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-25 19:49:08,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2021-11-25 19:49:08,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:08,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 19:49:08,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:49:09,315 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2021-11-25 19:49:09,504 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:49:11,461 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '576#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 156 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (exists ((v_rangesum_~cnt~0_BEFORE_RETURN_6 Int)) (and (<= 0 v_rangesum_~cnt~0_BEFORE_RETURN_6) (or (and (exists ((v_rangesum_~ret~0_BEFORE_RETURN_6 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_6 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_6 v_rangesum_~cnt~0_BEFORE_RETURN_6) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_6 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_6 v_rangesum_~cnt~0_BEFORE_RETURN_6)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_6 v_rangesum_~cnt~0_BEFORE_RETURN_6) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_6 v_rangesum_~cnt~0_BEFORE_RETURN_6)) 4294967296) 2147483647) (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_6 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_6 v_rangesum_~cnt~0_BEFORE_RETURN_6) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_6 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_6 v_rangesum_~cnt~0_BEFORE_RETURN_6)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_6 v_rangesum_~cnt~0_BEFORE_RETURN_6) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_6 v_rangesum_~cnt~0_BEFORE_RETURN_6)) 4294967296) (+ (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_6 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_6 v_rangesum_~cnt~0_BEFORE_RETURN_6) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_6 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_6 v_rangesum_~cnt~0_BEFORE_RETURN_6)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_6 v_rangesum_~cnt~0_BEFORE_RETURN_6) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_6 v_rangesum_~cnt~0_BEFORE_RETURN_6)) 4294967296) (- 4294967296))))) (not (= v_rangesum_~cnt~0_BEFORE_RETURN_6 0))) (and (= v_rangesum_~cnt~0_BEFORE_RETURN_6 0) (= |ULTIMATE.start_main_~ret5~0#1| 0))))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:49:11,462 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:49:11,462 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:49:11,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2021-11-25 19:49:11,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562964777] [2021-11-25 19:49:11,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:49:11,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:49:11,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:49:11,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:49:11,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-11-25 19:49:11,465 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 19:49:11,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:49:11,515 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-11-25 19:49:11,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:49:11,517 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 25 [2021-11-25 19:49:11,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:49:11,518 INFO L225 Difference]: With dead ends: 36 [2021-11-25 19:49:11,518 INFO L226 Difference]: Without dead ends: 21 [2021-11-25 19:49:11,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-11-25 19:49:11,525 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:49:11,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:49:11,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-25 19:49:11,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-25 19:49:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:49:11,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-11-25 19:49:11,532 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2021-11-25 19:49:11,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:49:11,532 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-11-25 19:49:11,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 19:49:11,532 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-25 19:49:11,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 19:49:11,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:49:11,534 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:49:11,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:49:11,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:49:11,768 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:49:11,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:49:11,769 INFO L85 PathProgramCache]: Analyzing trace with hash 139189043, now seen corresponding path program 2 times [2021-11-25 19:49:11,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:49:11,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275668027] [2021-11-25 19:49:11,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:11,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:49:11,816 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:49:11,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332495795] [2021-11-25 19:49:11,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:49:11,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:49:11,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:49:11,823 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:49:11,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:49:11,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 19:49:11,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:49:11,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:49:11,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:49:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 19:49:11,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:49:12,035 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 19:49:12,035 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:49:12,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275668027] [2021-11-25 19:49:12,035 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:49:12,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332495795] [2021-11-25 19:49:12,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332495795] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:49:12,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1593456859] [2021-11-25 19:49:12,039 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:49:12,039 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:49:12,040 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:49:12,040 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:49:12,040 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:49:12,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:12,077 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:49:12,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 19:49:12,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:12,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 19:49:12,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:12,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 19:49:12,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:12,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:49:12,202 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 19:49:12,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 214 treesize of output 213 [2021-11-25 19:49:12,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 19:49:12,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:12,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 19:49:12,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:12,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:12,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:49:12,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 19:49:12,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:12,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:12,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:12,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:12,879 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 19:49:12,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 19:49:12,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:12,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 19:49:12,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:49:13,275 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2021-11-25 19:49:13,505 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:49:21,294 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '848#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (exists ((v_rangesum_~cnt~0_BEFORE_RETURN_12 Int)) (and (<= 0 v_rangesum_~cnt~0_BEFORE_RETURN_12) (or (and (= v_rangesum_~cnt~0_BEFORE_RETURN_12 0) (= |ULTIMATE.start_main_~ret5~0#1| 0)) (and (exists ((v_rangesum_~ret~0_BEFORE_RETURN_12 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_12 v_rangesum_~cnt~0_BEFORE_RETURN_12) 0)) (< v_rangesum_~ret~0_BEFORE_RETURN_12 0)) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_12 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_12 v_rangesum_~cnt~0_BEFORE_RETURN_12)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_12 v_rangesum_~cnt~0_BEFORE_RETURN_12) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_12 v_rangesum_~cnt~0_BEFORE_RETURN_12)) 4294967296) 2147483647) (mod (ite (and (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_12 v_rangesum_~cnt~0_BEFORE_RETURN_12) 0)) (< v_rangesum_~ret~0_BEFORE_RETURN_12 0)) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_12 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_12 v_rangesum_~cnt~0_BEFORE_RETURN_12)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_12 v_rangesum_~cnt~0_BEFORE_RETURN_12) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_12 v_rangesum_~cnt~0_BEFORE_RETURN_12)) 4294967296) (+ (mod (ite (and (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_12 v_rangesum_~cnt~0_BEFORE_RETURN_12) 0)) (< v_rangesum_~ret~0_BEFORE_RETURN_12 0)) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_12 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_12 v_rangesum_~cnt~0_BEFORE_RETURN_12)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_12 v_rangesum_~cnt~0_BEFORE_RETURN_12) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_12 v_rangesum_~cnt~0_BEFORE_RETURN_12)) 4294967296) (- 4294967296))))) (not (= v_rangesum_~cnt~0_BEFORE_RETURN_12 0)))))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 156 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:49:21,294 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:49:21,295 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:49:21,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-25 19:49:21,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136839113] [2021-11-25 19:49:21,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:49:21,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:49:21,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:49:21,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:49:21,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-11-25 19:49:21,298 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-25 19:49:21,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:49:21,376 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2021-11-25 19:49:21,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:49:21,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2021-11-25 19:49:21,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:49:21,378 INFO L225 Difference]: With dead ends: 38 [2021-11-25 19:49:21,378 INFO L226 Difference]: Without dead ends: 24 [2021-11-25 19:49:21,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-11-25 19:49:21,379 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:49:21,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:49:21,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-25 19:49:21,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-25 19:49:21,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:49:21,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-11-25 19:49:21,385 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2021-11-25 19:49:21,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:49:21,386 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-11-25 19:49:21,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-25 19:49:21,386 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-25 19:49:21,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 19:49:21,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:49:21,387 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:49:21,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-25 19:49:21,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:49:21,602 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:49:21,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:49:21,603 INFO L85 PathProgramCache]: Analyzing trace with hash 378555129, now seen corresponding path program 3 times [2021-11-25 19:49:21,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:49:21,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285998081] [2021-11-25 19:49:21,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:21,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:49:21,647 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:49:21,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915565703] [2021-11-25 19:49:21,647 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:49:21,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:49:21,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:49:21,649 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:49:21,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:49:21,754 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:49:21,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:49:21,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:49:21,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:49:21,831 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 19:49:21,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:49:21,966 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 19:49:21,967 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:49:21,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285998081] [2021-11-25 19:49:21,967 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:49:21,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915565703] [2021-11-25 19:49:21,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915565703] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:49:21,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [384719391] [2021-11-25 19:49:21,970 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:49:21,971 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:49:21,971 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:49:21,971 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:49:21,972 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:49:21,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:22,008 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:49:22,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 19:49:22,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:22,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 19:49:22,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:22,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-25 19:49:22,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:22,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:22,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:22,132 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-25 19:49:22,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 224 treesize of output 212 [2021-11-25 19:49:22,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 19:49:22,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:22,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 19:49:22,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:22,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:22,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:49:22,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 19:49:22,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:22,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:22,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:22,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:22,739 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 19:49:22,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 19:49:22,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:22,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 19:49:22,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:49:23,192 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2021-11-25 19:49:23,392 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:49:28,043 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1190#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (exists ((v_rangesum_~cnt~0_BEFORE_RETURN_17 Int)) (and (or (and (not (= v_rangesum_~cnt~0_BEFORE_RETURN_17 0)) (exists ((v_rangesum_~ret~0_BEFORE_RETURN_17 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_17 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_17 v_rangesum_~cnt~0_BEFORE_RETURN_17) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_17 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_17 v_rangesum_~cnt~0_BEFORE_RETURN_17)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_17 v_rangesum_~cnt~0_BEFORE_RETURN_17) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_17 v_rangesum_~cnt~0_BEFORE_RETURN_17)) 4294967296) 2147483647) (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_17 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_17 v_rangesum_~cnt~0_BEFORE_RETURN_17) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_17 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_17 v_rangesum_~cnt~0_BEFORE_RETURN_17)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_17 v_rangesum_~cnt~0_BEFORE_RETURN_17) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_17 v_rangesum_~cnt~0_BEFORE_RETURN_17)) 4294967296) (+ (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_17 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_17 v_rangesum_~cnt~0_BEFORE_RETURN_17) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_17 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_17 v_rangesum_~cnt~0_BEFORE_RETURN_17)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_17 v_rangesum_~cnt~0_BEFORE_RETURN_17) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_17 v_rangesum_~cnt~0_BEFORE_RETURN_17)) 4294967296) (- 4294967296)))))) (and (= v_rangesum_~cnt~0_BEFORE_RETURN_17 0) (= |ULTIMATE.start_main_~ret5~0#1| 0))) (<= 0 v_rangesum_~cnt~0_BEFORE_RETURN_17))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 156 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:49:28,043 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:49:28,043 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:49:28,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-11-25 19:49:28,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965714682] [2021-11-25 19:49:28,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:49:28,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 19:49:28,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:49:28,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 19:49:28,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2021-11-25 19:49:28,045 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 19:49:28,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:49:28,115 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2021-11-25 19:49:28,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 19:49:28,115 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 37 [2021-11-25 19:49:28,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:49:28,116 INFO L225 Difference]: With dead ends: 48 [2021-11-25 19:49:28,116 INFO L226 Difference]: Without dead ends: 30 [2021-11-25 19:49:28,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2021-11-25 19:49:28,118 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:49:28,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:49:28,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-25 19:49:28,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-25 19:49:28,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:49:28,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-11-25 19:49:28,124 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 37 [2021-11-25 19:49:28,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:49:28,124 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-11-25 19:49:28,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 19:49:28,125 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-11-25 19:49:28,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-25 19:49:28,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:49:28,126 INFO L514 BasicCegarLoop]: trace histogram [12, 10, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:49:28,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-25 19:49:28,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 19:49:28,330 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:49:28,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:49:28,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1272494041, now seen corresponding path program 4 times [2021-11-25 19:49:28,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:49:28,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803202060] [2021-11-25 19:49:28,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:28,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:49:28,415 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:49:28,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554982895] [2021-11-25 19:49:28,416 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:49:28,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:49:28,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:49:28,418 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:49:28,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 19:49:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:49:28,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:49:28,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:49:28,710 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 19:49:28,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:49:28,993 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 19:49:28,994 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:49:28,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803202060] [2021-11-25 19:49:28,994 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:49:28,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554982895] [2021-11-25 19:49:28,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554982895] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:49:28,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [310001702] [2021-11-25 19:49:28,996 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:49:28,996 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:49:28,997 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:49:28,997 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:49:28,997 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:49:29,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:29,040 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:49:29,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 19:49:29,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:29,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 19:49:29,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:29,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 19:49:29,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:29,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:49:29,184 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 19:49:29,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 214 treesize of output 213 [2021-11-25 19:49:29,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 19:49:29,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:29,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 19:49:29,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:29,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:29,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:49:29,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 19:49:29,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:29,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:29,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:29,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:29,823 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 19:49:29,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 19:49:29,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:29,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 19:49:29,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:49:30,288 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2021-11-25 19:49:30,492 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:49:37,039 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1612#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 156 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (exists ((v_rangesum_~cnt~0_BEFORE_RETURN_24 Int)) (and (or (and (not (= v_rangesum_~cnt~0_BEFORE_RETURN_24 0)) (exists ((v_rangesum_~ret~0_BEFORE_RETURN_24 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_24 0) (not (= 0 (mod v_rangesum_~ret~0_BEFORE_RETURN_24 v_rangesum_~cnt~0_BEFORE_RETURN_24)))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_24 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_24 v_rangesum_~cnt~0_BEFORE_RETURN_24)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_24 v_rangesum_~cnt~0_BEFORE_RETURN_24) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_24 v_rangesum_~cnt~0_BEFORE_RETURN_24)) 4294967296) 2147483647) (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_24 0) (not (= 0 (mod v_rangesum_~ret~0_BEFORE_RETURN_24 v_rangesum_~cnt~0_BEFORE_RETURN_24)))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_24 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_24 v_rangesum_~cnt~0_BEFORE_RETURN_24)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_24 v_rangesum_~cnt~0_BEFORE_RETURN_24) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_24 v_rangesum_~cnt~0_BEFORE_RETURN_24)) 4294967296) (+ (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_24 0) (not (= 0 (mod v_rangesum_~ret~0_BEFORE_RETURN_24 v_rangesum_~cnt~0_BEFORE_RETURN_24)))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_24 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_24 v_rangesum_~cnt~0_BEFORE_RETURN_24)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_24 v_rangesum_~cnt~0_BEFORE_RETURN_24) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_24 v_rangesum_~cnt~0_BEFORE_RETURN_24)) 4294967296) (- 4294967296)))))) (and (= v_rangesum_~cnt~0_BEFORE_RETURN_24 0) (= |ULTIMATE.start_main_~ret5~0#1| 0))) (<= 0 v_rangesum_~cnt~0_BEFORE_RETURN_24))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:49:37,040 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:49:37,040 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:49:37,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2021-11-25 19:49:37,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430044462] [2021-11-25 19:49:37,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:49:37,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-25 19:49:37,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:49:37,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-25 19:49:37,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=996, Unknown=0, NotChecked=0, Total=1332 [2021-11-25 19:49:37,043 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 19:49:37,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:49:37,103 INFO L93 Difference]: Finished difference Result 60 states and 79 transitions. [2021-11-25 19:49:37,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 19:49:37,103 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 43 [2021-11-25 19:49:37,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:49:37,104 INFO L225 Difference]: With dead ends: 60 [2021-11-25 19:49:37,105 INFO L226 Difference]: Without dead ends: 42 [2021-11-25 19:49:37,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=336, Invalid=996, Unknown=0, NotChecked=0, Total=1332 [2021-11-25 19:49:37,107 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:49:37,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:49:37,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-25 19:49:37,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-11-25 19:49:37,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:49:37,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-11-25 19:49:37,116 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 43 [2021-11-25 19:49:37,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:49:37,117 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-11-25 19:49:37,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 19:49:37,117 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-11-25 19:49:37,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-25 19:49:37,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:49:37,120 INFO L514 BasicCegarLoop]: trace histogram [22, 12, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:49:37,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:49:37,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-25 19:49:37,342 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:49:37,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:49:37,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1480595865, now seen corresponding path program 5 times [2021-11-25 19:49:37,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:49:37,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049016819] [2021-11-25 19:49:37,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:37,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:49:37,399 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:49:37,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368802219] [2021-11-25 19:49:37,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:49:37,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:49:37,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:49:37,401 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:49:37,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 19:49:37,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 19:49:37,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:49:37,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:49:37,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:49:37,632 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-11-25 19:49:37,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:49:37,721 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-11-25 19:49:37,721 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:49:37,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049016819] [2021-11-25 19:49:37,721 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:49:37,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368802219] [2021-11-25 19:49:37,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368802219] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:49:37,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1588336396] [2021-11-25 19:49:37,724 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:49:37,724 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:49:37,725 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:49:37,725 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:49:37,725 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:49:37,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:37,756 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:49:37,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-25 19:49:37,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:37,775 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:49:37,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 19:49:37,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:37,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-25 19:49:37,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:37,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:37,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:37,896 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-25 19:49:37,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 224 treesize of output 212 [2021-11-25 19:49:37,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 19:49:38,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:38,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 19:49:38,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:38,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:38,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:49:38,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 19:49:38,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:38,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:38,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:38,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:38,429 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 19:49:38,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 19:49:38,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:38,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 19:49:38,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:49:38,833 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2021-11-25 19:49:38,994 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:49:45,918 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2136#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 156 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (exists ((v_rangesum_~cnt~0_BEFORE_RETURN_30 Int)) (and (or (and (= v_rangesum_~cnt~0_BEFORE_RETURN_30 0) (= |ULTIMATE.start_main_~ret5~0#1| 0)) (and (not (= v_rangesum_~cnt~0_BEFORE_RETURN_30 0)) (exists ((v_rangesum_~ret~0_BEFORE_RETURN_30 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_30 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_30 v_rangesum_~cnt~0_BEFORE_RETURN_30) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_30 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_30 v_rangesum_~cnt~0_BEFORE_RETURN_30)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_30 v_rangesum_~cnt~0_BEFORE_RETURN_30) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_30 v_rangesum_~cnt~0_BEFORE_RETURN_30)) 4294967296) 2147483647) (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_30 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_30 v_rangesum_~cnt~0_BEFORE_RETURN_30) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_30 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_30 v_rangesum_~cnt~0_BEFORE_RETURN_30)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_30 v_rangesum_~cnt~0_BEFORE_RETURN_30) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_30 v_rangesum_~cnt~0_BEFORE_RETURN_30)) 4294967296) (+ (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_30 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_30 v_rangesum_~cnt~0_BEFORE_RETURN_30) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_30 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_30 v_rangesum_~cnt~0_BEFORE_RETURN_30)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_30 v_rangesum_~cnt~0_BEFORE_RETURN_30) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_30 v_rangesum_~cnt~0_BEFORE_RETURN_30)) 4294967296) (- 4294967296))))))) (<= 0 v_rangesum_~cnt~0_BEFORE_RETURN_30))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:49:45,919 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:49:45,919 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:49:45,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-25 19:49:45,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228154403] [2021-11-25 19:49:45,919 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:49:45,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:49:45,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:49:45,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:49:45,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-11-25 19:49:45,921 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:49:45,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:49:45,957 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2021-11-25 19:49:45,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:49:45,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2021-11-25 19:49:45,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:49:45,959 INFO L225 Difference]: With dead ends: 57 [2021-11-25 19:49:45,959 INFO L226 Difference]: Without dead ends: 45 [2021-11-25 19:49:45,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-11-25 19:49:45,961 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:49:45,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:49:45,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-25 19:49:45,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-11-25 19:49:45,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:49:45,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-11-25 19:49:45,970 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 55 [2021-11-25 19:49:45,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:49:45,970 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-11-25 19:49:45,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:49:45,971 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-11-25 19:49:45,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 19:49:45,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:49:45,974 INFO L514 BasicCegarLoop]: trace histogram [22, 12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:49:46,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:49:46,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:49:46,183 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:49:46,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:49:46,183 INFO L85 PathProgramCache]: Analyzing trace with hash -496280295, now seen corresponding path program 6 times [2021-11-25 19:49:46,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:49:46,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277657248] [2021-11-25 19:49:46,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:46,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:49:46,232 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:49:46,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991438364] [2021-11-25 19:49:46,232 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:49:46,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:49:46,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:49:46,234 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:49:46,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 19:49:46,367 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:49:46,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:49:46,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 19:49:46,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:49:46,735 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-25 19:49:46,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:49:47,297 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-25 19:49:47,297 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:49:47,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277657248] [2021-11-25 19:49:47,297 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:49:47,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991438364] [2021-11-25 19:49:47,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991438364] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:49:47,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1034199804] [2021-11-25 19:49:47,300 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:49:47,300 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:49:47,300 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:49:47,301 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:49:47,301 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:49:47,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:47,329 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:49:47,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-25 19:49:47,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:47,355 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:49:47,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 19:49:47,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:47,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 19:49:47,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:47,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:49:47,477 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 19:49:47,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 214 treesize of output 213 [2021-11-25 19:49:47,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 19:49:47,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:47,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 19:49:48,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:48,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-25 19:49:48,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:48,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:48,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:48,125 INFO L354 Elim1Store]: treesize reduction 60, result has 32.6 percent of original size [2021-11-25 19:49:48,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 85 [2021-11-25 19:49:48,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:48,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 19:49:48,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:49:48,528 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2021-11-25 19:49:48,709 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:49:54,859 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2716#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 156 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:49:54,859 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:49:54,859 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:49:54,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 42 [2021-11-25 19:49:54,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172664705] [2021-11-25 19:49:54,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:49:54,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-25 19:49:54,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:49:54,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-25 19:49:54,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=921, Invalid=2049, Unknown=0, NotChecked=0, Total=2970 [2021-11-25 19:49:54,863 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 states have internal predecessors, (56), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 19:49:54,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:49:54,966 INFO L93 Difference]: Finished difference Result 84 states and 109 transitions. [2021-11-25 19:49:54,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-25 19:49:54,967 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 states have internal predecessors, (56), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2021-11-25 19:49:54,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:49:54,968 INFO L225 Difference]: With dead ends: 84 [2021-11-25 19:49:54,968 INFO L226 Difference]: Without dead ends: 63 [2021-11-25 19:49:54,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=921, Invalid=2049, Unknown=0, NotChecked=0, Total=2970 [2021-11-25 19:49:54,971 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:49:54,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:49:54,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-25 19:49:54,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-11-25 19:49:54,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:49:54,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2021-11-25 19:49:54,982 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 58 [2021-11-25 19:49:54,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:49:54,983 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2021-11-25 19:49:54,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 states have internal predecessors, (56), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 19:49:54,983 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2021-11-25 19:49:54,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 19:49:54,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:49:54,985 INFO L514 BasicCegarLoop]: trace histogram [40, 12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:49:55,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-25 19:49:55,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:49:55,202 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:49:55,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:49:55,203 INFO L85 PathProgramCache]: Analyzing trace with hash -2082672007, now seen corresponding path program 7 times [2021-11-25 19:49:55,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:49:55,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947285726] [2021-11-25 19:49:55,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:55,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:49:55,260 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:49:55,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139298988] [2021-11-25 19:49:55,261 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:49:55,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:49:55,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:49:55,262 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:49:55,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 19:49:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:49:55,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:49:55,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:49:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2021-11-25 19:49:55,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:49:55,743 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2021-11-25 19:49:55,743 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:49:55,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947285726] [2021-11-25 19:49:55,743 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:49:55,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139298988] [2021-11-25 19:49:55,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139298988] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:49:55,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1013848156] [2021-11-25 19:49:55,746 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:49:55,746 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:49:55,747 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:49:55,747 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:49:55,747 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:49:55,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:55,786 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:49:55,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 19:49:55,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:55,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 19:49:55,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:55,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 19:49:55,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:55,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:49:55,928 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 19:49:55,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 214 treesize of output 213 [2021-11-25 19:49:56,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 19:49:56,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:56,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 19:49:56,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:56,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:56,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:49:56,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 19:49:56,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:56,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:56,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:56,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:56,514 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 19:49:56,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 19:49:56,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:49:56,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 19:49:56,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:49:56,867 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2021-11-25 19:49:57,061 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:50:04,970 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3462#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 156 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:50:04,970 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:50:04,970 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:50:04,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-25 19:50:04,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874769587] [2021-11-25 19:50:04,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:50:04,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 19:50:04,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:50:04,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 19:50:04,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2021-11-25 19:50:04,973 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:50:05,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:50:05,070 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2021-11-25 19:50:05,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 19:50:05,071 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 76 [2021-11-25 19:50:05,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:50:05,073 INFO L225 Difference]: With dead ends: 89 [2021-11-25 19:50:05,073 INFO L226 Difference]: Without dead ends: 69 [2021-11-25 19:50:05,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2021-11-25 19:50:05,075 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:50:05,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:50:05,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-25 19:50:05,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-25 19:50:05,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:50:05,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2021-11-25 19:50:05,085 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 76 [2021-11-25 19:50:05,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:50:05,085 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2021-11-25 19:50:05,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:50:05,086 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2021-11-25 19:50:05,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-25 19:50:05,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:50:05,088 INFO L514 BasicCegarLoop]: trace histogram [40, 30, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:50:05,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 19:50:05,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:50:05,314 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:50:05,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:50:05,315 INFO L85 PathProgramCache]: Analyzing trace with hash 803884729, now seen corresponding path program 8 times [2021-11-25 19:50:05,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:50:05,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760479172] [2021-11-25 19:50:05,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:50:05,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:50:05,393 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:50:05,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805406363] [2021-11-25 19:50:05,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:50:05,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:50:05,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:50:05,394 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:50:05,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 19:50:05,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-25 19:50:05,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:50:05,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:50:05,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:50:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 246 proven. 10 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2021-11-25 19:50:05,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:50:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1354 trivial. 0 not checked. [2021-11-25 19:50:05,907 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:50:05,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760479172] [2021-11-25 19:50:05,907 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:50:05,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805406363] [2021-11-25 19:50:05,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805406363] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:50:05,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [518798640] [2021-11-25 19:50:05,910 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:50:05,910 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:50:05,910 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:50:05,910 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:50:05,911 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:50:05,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:05,935 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:50:05,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-25 19:50:05,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:05,966 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:50:05,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 19:50:05,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:05,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-25 19:50:06,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:06,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:06,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:06,064 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-25 19:50:06,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 224 treesize of output 212 [2021-11-25 19:50:06,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 19:50:06,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:06,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 19:50:06,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:06,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:06,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:50:06,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 19:50:06,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:06,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:06,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:06,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:06,647 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 19:50:06,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 19:50:06,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:06,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 19:50:06,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:50:07,011 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2021-11-25 19:50:07,196 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:50:12,552 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4338#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 156 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (exists ((v_rangesum_~cnt~0_BEFORE_RETURN_48 Int)) (and (<= 0 v_rangesum_~cnt~0_BEFORE_RETURN_48) (or (and (= v_rangesum_~cnt~0_BEFORE_RETURN_48 0) (= |ULTIMATE.start_main_~ret5~0#1| 0)) (and (not (= v_rangesum_~cnt~0_BEFORE_RETURN_48 0)) (exists ((v_rangesum_~ret~0_BEFORE_RETURN_48 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_48 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_48 v_rangesum_~cnt~0_BEFORE_RETURN_48) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_48 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_48 v_rangesum_~cnt~0_BEFORE_RETURN_48)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_48 v_rangesum_~cnt~0_BEFORE_RETURN_48) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_48 v_rangesum_~cnt~0_BEFORE_RETURN_48)) 4294967296) 2147483647) (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_48 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_48 v_rangesum_~cnt~0_BEFORE_RETURN_48) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_48 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_48 v_rangesum_~cnt~0_BEFORE_RETURN_48)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_48 v_rangesum_~cnt~0_BEFORE_RETURN_48) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_48 v_rangesum_~cnt~0_BEFORE_RETURN_48)) 4294967296) (+ (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_48 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_48 v_rangesum_~cnt~0_BEFORE_RETURN_48) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_48 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_48 v_rangesum_~cnt~0_BEFORE_RETURN_48)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_48 v_rangesum_~cnt~0_BEFORE_RETURN_48) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_48 v_rangesum_~cnt~0_BEFORE_RETURN_48)) 4294967296) (- 4294967296))))))))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:50:12,552 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:50:12,552 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:50:12,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-25 19:50:12,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822553803] [2021-11-25 19:50:12,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:50:12,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 19:50:12,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:50:12,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 19:50:12,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2021-11-25 19:50:12,554 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:50:12,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:50:12,593 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2021-11-25 19:50:12,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 19:50:12,594 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 94 [2021-11-25 19:50:12,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:50:12,595 INFO L225 Difference]: With dead ends: 93 [2021-11-25 19:50:12,595 INFO L226 Difference]: Without dead ends: 75 [2021-11-25 19:50:12,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2021-11-25 19:50:12,596 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:50:12,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:50:12,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-25 19:50:12,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-11-25 19:50:12,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:50:12,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-11-25 19:50:12,604 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 94 [2021-11-25 19:50:12,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:50:12,605 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-11-25 19:50:12,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:50:12,605 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-11-25 19:50:12,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-25 19:50:12,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:50:12,607 INFO L514 BasicCegarLoop]: trace histogram [40, 30, 10, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:50:12,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 19:50:12,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-25 19:50:12,826 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:50:12,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:50:12,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1435735737, now seen corresponding path program 9 times [2021-11-25 19:50:12,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:50:12,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795222671] [2021-11-25 19:50:12,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:50:12,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:50:12,879 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:50:12,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [901263543] [2021-11-25 19:50:12,880 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:50:12,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:50:12,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:50:12,881 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:50:12,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-25 19:50:13,120 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:50:13,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:50:13,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:50:13,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:50:13,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 244 proven. 55 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2021-11-25 19:50:13,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:50:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2021-11-25 19:50:13,616 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:50:13,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795222671] [2021-11-25 19:50:13,616 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:50:13,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901263543] [2021-11-25 19:50:13,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901263543] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:50:13,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [48153211] [2021-11-25 19:50:13,618 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:50:13,618 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:50:13,618 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:50:13,618 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:50:13,618 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:50:13,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:13,651 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:50:13,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-25 19:50:13,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:13,673 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:50:13,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 19:50:13,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:13,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 19:50:13,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:13,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:50:13,775 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 19:50:13,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 214 treesize of output 213 [2021-11-25 19:50:13,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 19:50:14,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:14,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 19:50:14,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:14,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-25 19:50:14,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:14,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:14,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:14,372 INFO L354 Elim1Store]: treesize reduction 60, result has 32.6 percent of original size [2021-11-25 19:50:14,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 85 [2021-11-25 19:50:14,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:14,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 19:50:14,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:50:14,673 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2021-11-25 19:50:14,871 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:50:22,605 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5284#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 0 |#NULL.base|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 156 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |#NULL.base| 0) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 19:50:22,606 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:50:22,606 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:50:22,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-25 19:50:22,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753434926] [2021-11-25 19:50:22,606 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:50:22,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-25 19:50:22,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:50:22,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-25 19:50:22,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=996, Unknown=1, NotChecked=0, Total=1332 [2021-11-25 19:50:22,608 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:50:22,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:50:22,666 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2021-11-25 19:50:22,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 19:50:22,666 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2021-11-25 19:50:22,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:50:22,667 INFO L225 Difference]: With dead ends: 119 [2021-11-25 19:50:22,667 INFO L226 Difference]: Without dead ends: 87 [2021-11-25 19:50:22,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=335, Invalid=996, Unknown=1, NotChecked=0, Total=1332 [2021-11-25 19:50:22,669 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:50:22,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:50:22,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-25 19:50:22,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-11-25 19:50:22,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:50:22,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2021-11-25 19:50:22,678 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 100 [2021-11-25 19:50:22,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:50:22,679 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2021-11-25 19:50:22,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:50:22,679 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2021-11-25 19:50:22,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-25 19:50:22,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:50:22,686 INFO L514 BasicCegarLoop]: trace histogram [66, 40, 10, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:50:22,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-25 19:50:22,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-25 19:50:22,894 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:50:22,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:50:22,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1634853063, now seen corresponding path program 10 times [2021-11-25 19:50:22,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:50:22,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419650594] [2021-11-25 19:50:22,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:50:22,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:50:22,949 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:50:22,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153921498] [2021-11-25 19:50:22,949 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:50:22,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:50:22,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:50:22,950 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:50:22,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-25 19:50:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:50:23,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 19:50:23,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:50:23,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3227 backedges. 1060 proven. 253 refuted. 0 times theorem prover too weak. 1914 trivial. 0 not checked. [2021-11-25 19:50:23,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:50:24,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3227 backedges. 0 proven. 1313 refuted. 0 times theorem prover too weak. 1914 trivial. 0 not checked. [2021-11-25 19:50:24,330 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:50:24,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419650594] [2021-11-25 19:50:24,331 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:50:24,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153921498] [2021-11-25 19:50:24,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153921498] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:50:24,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1396852078] [2021-11-25 19:50:24,332 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:50:24,332 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:50:24,333 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:50:24,333 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:50:24,333 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:50:24,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:24,361 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:50:24,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 19:50:24,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:24,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 19:50:24,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:24,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 19:50:24,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:24,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:50:24,451 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 19:50:24,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 214 treesize of output 213 [2021-11-25 19:50:24,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 19:50:24,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:24,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 19:50:24,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:24,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-25 19:50:24,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:24,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:24,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:25,015 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-25 19:50:25,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2021-11-25 19:50:25,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:25,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 19:50:25,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:50:25,377 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2021-11-25 19:50:25,507 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:50:31,522 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6538#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (exists ((v_rangesum_~cnt~0_BEFORE_RETURN_59 Int)) (and (<= 0 v_rangesum_~cnt~0_BEFORE_RETURN_59) (or (and (not (= v_rangesum_~cnt~0_BEFORE_RETURN_59 0)) (exists ((v_rangesum_~ret~0_BEFORE_RETURN_59 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_59 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_59 v_rangesum_~cnt~0_BEFORE_RETURN_59) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_59 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_59 v_rangesum_~cnt~0_BEFORE_RETURN_59)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_59 v_rangesum_~cnt~0_BEFORE_RETURN_59) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_59 v_rangesum_~cnt~0_BEFORE_RETURN_59)) 4294967296) 2147483647) (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_59 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_59 v_rangesum_~cnt~0_BEFORE_RETURN_59) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_59 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_59 v_rangesum_~cnt~0_BEFORE_RETURN_59)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_59 v_rangesum_~cnt~0_BEFORE_RETURN_59) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_59 v_rangesum_~cnt~0_BEFORE_RETURN_59)) 4294967296) (+ (- 4294967296) (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_59 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_59 v_rangesum_~cnt~0_BEFORE_RETURN_59) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_59 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_59 v_rangesum_~cnt~0_BEFORE_RETURN_59)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_59 v_rangesum_~cnt~0_BEFORE_RETURN_59) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_59 v_rangesum_~cnt~0_BEFORE_RETURN_59)) 4294967296)))))) (and (= v_rangesum_~cnt~0_BEFORE_RETURN_59 0) (= |ULTIMATE.start_main_~ret5~0#1| 0))))) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 156 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:50:31,522 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:50:31,522 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:50:31,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 42 [2021-11-25 19:50:31,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104887669] [2021-11-25 19:50:31,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:50:31,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-25 19:50:31,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:50:31,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-25 19:50:31,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=921, Invalid=2049, Unknown=0, NotChecked=0, Total=2970 [2021-11-25 19:50:31,525 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand has 42 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 42 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:50:31,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:50:31,603 INFO L93 Difference]: Finished difference Result 149 states and 176 transitions. [2021-11-25 19:50:31,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-25 19:50:31,604 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 42 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 136 [2021-11-25 19:50:31,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:50:31,605 INFO L225 Difference]: With dead ends: 149 [2021-11-25 19:50:31,605 INFO L226 Difference]: Without dead ends: 105 [2021-11-25 19:50:31,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 352 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=921, Invalid=2049, Unknown=0, NotChecked=0, Total=2970 [2021-11-25 19:50:31,608 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:50:31,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:50:31,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-25 19:50:31,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-11-25 19:50:31,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:50:31,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2021-11-25 19:50:31,618 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 136 [2021-11-25 19:50:31,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:50:31,618 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2021-11-25 19:50:31,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 42 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:50:31,619 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2021-11-25 19:50:31,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-25 19:50:31,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:50:31,621 INFO L514 BasicCegarLoop]: trace histogram [120, 40, 10, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:50:31,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-25 19:50:31,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:50:31,830 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:50:31,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:50:31,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2141770745, now seen corresponding path program 11 times [2021-11-25 19:50:31,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:50:31,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989065950] [2021-11-25 19:50:31,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:50:31,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:50:31,894 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:50:31,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784477573] [2021-11-25 19:50:31,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:50:31,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:50:31,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:50:31,896 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:50:31,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-25 19:50:32,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-25 19:50:32,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:50:32,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:50:32,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:50:33,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8384 backedges. 3366 proven. 55 refuted. 0 times theorem prover too weak. 4963 trivial. 0 not checked. [2021-11-25 19:50:33,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:50:33,519 INFO L134 CoverageAnalysis]: Checked inductivity of 8384 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8329 trivial. 0 not checked. [2021-11-25 19:50:33,519 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:50:33,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989065950] [2021-11-25 19:50:33,519 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:50:33,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784477573] [2021-11-25 19:50:33,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784477573] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:50:33,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [198007832] [2021-11-25 19:50:33,521 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:50:33,522 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:50:33,522 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:50:33,522 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:50:33,522 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:50:33,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:33,548 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:50:33,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-25 19:50:33,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:33,572 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:50:33,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 19:50:33,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:33,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 19:50:33,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:33,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:50:33,675 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 19:50:33,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 214 treesize of output 213 [2021-11-25 19:50:33,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 19:50:33,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:33,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 19:50:34,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:34,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:34,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:50:34,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 19:50:34,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:34,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:34,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:34,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:34,191 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 19:50:34,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 19:50:34,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:34,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 19:50:34,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:50:34,500 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2021-11-25 19:50:34,625 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:50:42,513 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8194#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_rangesum_~cnt~0_BEFORE_RETURN_65 Int)) (and (<= 0 v_rangesum_~cnt~0_BEFORE_RETURN_65) (or (and (= v_rangesum_~cnt~0_BEFORE_RETURN_65 0) (= |ULTIMATE.start_main_~ret5~0#1| 0)) (and (exists ((v_rangesum_~ret~0_BEFORE_RETURN_65 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_65 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_65 v_rangesum_~cnt~0_BEFORE_RETURN_65) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_65 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_65 v_rangesum_~cnt~0_BEFORE_RETURN_65)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_65 v_rangesum_~cnt~0_BEFORE_RETURN_65) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_65 v_rangesum_~cnt~0_BEFORE_RETURN_65)) 4294967296) 2147483647) (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_65 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_65 v_rangesum_~cnt~0_BEFORE_RETURN_65) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_65 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_65 v_rangesum_~cnt~0_BEFORE_RETURN_65)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_65 v_rangesum_~cnt~0_BEFORE_RETURN_65) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_65 v_rangesum_~cnt~0_BEFORE_RETURN_65)) 4294967296) (+ (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_65 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_65 v_rangesum_~cnt~0_BEFORE_RETURN_65) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_65 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_65 v_rangesum_~cnt~0_BEFORE_RETURN_65)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_65 v_rangesum_~cnt~0_BEFORE_RETURN_65) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_65 v_rangesum_~cnt~0_BEFORE_RETURN_65)) 4294967296) (- 4294967296))))) (not (= v_rangesum_~cnt~0_BEFORE_RETURN_65 0)))))) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 156 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:50:42,513 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:50:42,513 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:50:42,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-25 19:50:42,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787387218] [2021-11-25 19:50:42,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:50:42,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-25 19:50:42,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:50:42,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-25 19:50:42,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=996, Unknown=0, NotChecked=0, Total=1332 [2021-11-25 19:50:42,515 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:50:42,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:50:42,569 INFO L93 Difference]: Finished difference Result 165 states and 181 transitions. [2021-11-25 19:50:42,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 19:50:42,569 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 190 [2021-11-25 19:50:42,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:50:42,571 INFO L225 Difference]: With dead ends: 165 [2021-11-25 19:50:42,571 INFO L226 Difference]: Without dead ends: 117 [2021-11-25 19:50:42,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=336, Invalid=996, Unknown=0, NotChecked=0, Total=1332 [2021-11-25 19:50:42,573 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:50:42,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:50:42,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-25 19:50:42,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-11-25 19:50:42,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.0267857142857142) internal successors, (115), 112 states have internal predecessors, (115), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:50:42,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2021-11-25 19:50:42,583 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 190 [2021-11-25 19:50:42,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:50:42,583 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2021-11-25 19:50:42,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:50:42,584 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2021-11-25 19:50:42,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-25 19:50:42,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:50:42,587 INFO L514 BasicCegarLoop]: trace histogram [120, 40, 22, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:50:42,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-25 19:50:42,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-25 19:50:42,802 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:50:42,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:50:42,803 INFO L85 PathProgramCache]: Analyzing trace with hash 732079097, now seen corresponding path program 12 times [2021-11-25 19:50:42,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:50:42,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854176174] [2021-11-25 19:50:42,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:50:42,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:50:42,883 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:50:42,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756005898] [2021-11-25 19:50:42,883 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:50:42,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:50:42,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:50:42,886 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:50:42,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-25 19:50:43,247 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:50:43,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:50:43,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 19:50:43,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:50:43,805 INFO L134 CoverageAnalysis]: Checked inductivity of 8582 backedges. 3366 proven. 253 refuted. 0 times theorem prover too weak. 4963 trivial. 0 not checked. [2021-11-25 19:50:43,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:50:44,518 INFO L134 CoverageAnalysis]: Checked inductivity of 8582 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 8329 trivial. 0 not checked. [2021-11-25 19:50:44,518 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:50:44,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854176174] [2021-11-25 19:50:44,518 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:50:44,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756005898] [2021-11-25 19:50:44,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756005898] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:50:44,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [609451853] [2021-11-25 19:50:44,520 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:50:44,520 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:50:44,520 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:50:44,521 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:50:44,521 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:50:44,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:44,545 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:50:44,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-25 19:50:44,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:44,567 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:50:44,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 19:50:44,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:44,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 19:50:44,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:44,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:50:44,661 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 19:50:44,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 214 treesize of output 213 [2021-11-25 19:50:44,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 19:50:44,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:44,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 19:50:45,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:45,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-25 19:50:45,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:45,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:45,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:45,196 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-25 19:50:45,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2021-11-25 19:50:45,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:50:45,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 19:50:45,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:50:45,473 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 12 for LOIs [2021-11-25 19:50:45,587 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:50:54,772 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9997#(and (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.offset|) (<= 0 |ULTIMATE.start_init_nondet_~x#1.offset|) (<= 40 |ULTIMATE.start_init_nondet_~i~0#1|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |ULTIMATE.start_init_nondet_#in~x#1.offset| 0) (<= 39 |ULTIMATE.start_main_~i~2#1|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= |ULTIMATE.start_init_nondet_~x#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_init_nondet_~x#1.base|) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 156 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (exists ((v_rangesum_~cnt~0_BEFORE_RETURN_71 Int)) (and (<= 0 v_rangesum_~cnt~0_BEFORE_RETURN_71) (or (and (exists ((v_rangesum_~ret~0_BEFORE_RETURN_71 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_71 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_71 v_rangesum_~cnt~0_BEFORE_RETURN_71) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_71 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_71 v_rangesum_~cnt~0_BEFORE_RETURN_71)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_71 v_rangesum_~cnt~0_BEFORE_RETURN_71) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_71 v_rangesum_~cnt~0_BEFORE_RETURN_71)) 4294967296) 2147483647) (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_71 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_71 v_rangesum_~cnt~0_BEFORE_RETURN_71) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_71 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_71 v_rangesum_~cnt~0_BEFORE_RETURN_71)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_71 v_rangesum_~cnt~0_BEFORE_RETURN_71) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_71 v_rangesum_~cnt~0_BEFORE_RETURN_71)) 4294967296) (+ (mod (ite (and (< v_rangesum_~ret~0_BEFORE_RETURN_71 0) (not (= (mod v_rangesum_~ret~0_BEFORE_RETURN_71 v_rangesum_~cnt~0_BEFORE_RETURN_71) 0))) (ite (< v_rangesum_~cnt~0_BEFORE_RETURN_71 0) (+ (- 1) (div v_rangesum_~ret~0_BEFORE_RETURN_71 v_rangesum_~cnt~0_BEFORE_RETURN_71)) (+ (div v_rangesum_~ret~0_BEFORE_RETURN_71 v_rangesum_~cnt~0_BEFORE_RETURN_71) 1)) (div v_rangesum_~ret~0_BEFORE_RETURN_71 v_rangesum_~cnt~0_BEFORE_RETURN_71)) 4294967296) (- 4294967296))))) (not (= v_rangesum_~cnt~0_BEFORE_RETURN_71 0))) (and (= v_rangesum_~cnt~0_BEFORE_RETURN_71 0) (= |ULTIMATE.start_main_~ret5~0#1| 0))))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_init_nondet_#in~x#1.base|) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:50:54,773 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:50:54,773 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:50:54,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 41 [2021-11-25 19:50:54,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543642087] [2021-11-25 19:50:54,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:50:54,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-25 19:50:54,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:50:54,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-25 19:50:54,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=880, Invalid=1982, Unknown=0, NotChecked=0, Total=2862 [2021-11-25 19:50:54,776 INFO L87 Difference]: Start difference. First operand 117 states and 121 transitions. Second operand has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:50:54,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:50:54,882 INFO L93 Difference]: Finished difference Result 182 states and 203 transitions. [2021-11-25 19:50:54,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-25 19:50:54,882 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 202 [2021-11-25 19:50:54,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:50:54,884 INFO L225 Difference]: With dead ends: 182 [2021-11-25 19:50:54,884 INFO L226 Difference]: Without dead ends: 134 [2021-11-25 19:50:54,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 551 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=880, Invalid=1982, Unknown=0, NotChecked=0, Total=2862 [2021-11-25 19:50:54,886 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:50:54,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:50:54,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-25 19:50:54,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-25 19:50:54,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.0232558139534884) internal successors, (132), 129 states have internal predecessors, (132), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:50:54,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2021-11-25 19:50:54,896 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 202 [2021-11-25 19:50:54,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:50:54,896 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2021-11-25 19:50:54,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 19:50:54,897 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2021-11-25 19:50:54,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-25 19:50:54,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:50:54,900 INFO L514 BasicCegarLoop]: trace histogram [120, 40, 39, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:50:54,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-25 19:50:55,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-25 19:50:55,126 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:50:55,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:50:55,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1809159097, now seen corresponding path program 13 times [2021-11-25 19:50:55,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:50:55,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583551002] [2021-11-25 19:50:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:50:55,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:50:55,189 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:50:55,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1463419590] [2021-11-25 19:50:55,190 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:50:55,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:50:55,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:50:55,207 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:50:55,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 19:55:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:55:50,676 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 20:00:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:00:38,027 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 20:00:38,027 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 20:00:38,028 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 20:00:38,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-25 20:00:38,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-25 20:00:38,249 INFO L732 BasicCegarLoop]: Path program histogram: [13, 1, 1, 1] [2021-11-25 20:00:38,252 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 20:00:38,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:00:38 BoogieIcfgContainer [2021-11-25 20:00:38,464 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 20:00:38,465 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 20:00:38,465 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 20:00:38,465 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 20:00:38,465 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:49:04" (3/4) ... [2021-11-25 20:00:38,467 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 20:00:38,659 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 20:00:38,659 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 20:00:38,660 INFO L158 Benchmark]: Toolchain (without parser) took 694939.86ms. Allocated memory was 123.7MB in the beginning and 234.9MB in the end (delta: 111.1MB). Free memory was 85.1MB in the beginning and 112.5MB in the end (delta: -27.5MB). Peak memory consumption was 83.2MB. Max. memory is 16.1GB. [2021-11-25 20:00:38,660 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 123.7MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:00:38,660 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.40ms. Allocated memory is still 123.7MB. Free memory was 84.9MB in the beginning and 97.1MB in the end (delta: -12.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-25 20:00:38,661 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.52ms. Allocated memory is still 123.7MB. Free memory was 97.1MB in the beginning and 95.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 20:00:38,661 INFO L158 Benchmark]: Boogie Preprocessor took 45.24ms. Allocated memory is still 123.7MB. Free memory was 95.5MB in the beginning and 93.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 20:00:38,661 INFO L158 Benchmark]: RCFGBuilder took 413.15ms. Allocated memory is still 123.7MB. Free memory was 93.9MB in the beginning and 80.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 20:00:38,662 INFO L158 Benchmark]: TraceAbstraction took 693869.82ms. Allocated memory was 123.7MB in the beginning and 234.9MB in the end (delta: 111.1MB). Free memory was 80.8MB in the beginning and 131.4MB in the end (delta: -50.6MB). Peak memory consumption was 62.6MB. Max. memory is 16.1GB. [2021-11-25 20:00:38,662 INFO L158 Benchmark]: Witness Printer took 194.48ms. Allocated memory is still 234.9MB. Free memory was 131.4MB in the beginning and 112.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-25 20:00:38,664 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 123.7MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 345.40ms. Allocated memory is still 123.7MB. Free memory was 84.9MB in the beginning and 97.1MB in the end (delta: -12.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.52ms. Allocated memory is still 123.7MB. Free memory was 97.1MB in the beginning and 95.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.24ms. Allocated memory is still 123.7MB. Free memory was 95.5MB in the beginning and 93.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 413.15ms. Allocated memory is still 123.7MB. Free memory was 93.9MB in the beginning and 80.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 693869.82ms. Allocated memory was 123.7MB in the beginning and 234.9MB in the end (delta: 111.1MB). Free memory was 80.8MB in the beginning and 131.4MB in the end (delta: -50.6MB). Peak memory consumption was 62.6MB. Max. memory is 16.1GB. * Witness Printer took 194.48ms. Allocated memory is still 234.9MB. Free memory was 131.4MB in the beginning and 112.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 61]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int x[40]; [L43] CALL init_nondet(x) [L16] int i; [L17] i = 0 VAL [i=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=1, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=2, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=3, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=4, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=5, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=6, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=7, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=8, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=9, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=10, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=11, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=12, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=13, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=14, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=15, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=16, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=17, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=18, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=19, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=20, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=21, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=22, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=23, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=24, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=25, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=26, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=27, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=28, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=29, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=30, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=31, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=32, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=33, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=34, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=35, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=36, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=37, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=38, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=39, x={14:0}, x={14:0}] [L17] COND TRUE i < 40 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=40, x={14:0}, x={14:0}] [L17] COND FALSE !(i < 40) [L43] RET init_nondet(x) [L44] int temp; [L45] int ret; [L46] int ret2; [L47] int ret5; VAL [x={14:0}] [L49] CALL, EXPR rangesum(x) VAL [x={14:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=6, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=7, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=8, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=9, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=10, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=11, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=12, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=13, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=14, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=15, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=16, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=17, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=18, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=19, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=20, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=21, ret=0, x={14:0}, x={14:0}, x[i]=172] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=1, i=22, ret=-1, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=2, i=23, ret=-9, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=3, i=24, ret=-16, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=4, i=25, ret=-18, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=5, i=26, ret=-358, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=6, i=27, ret=-689, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=7, i=28, ret=-1022, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=8, i=29, ret=-1350, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=9, i=30, ret=-1696, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=10, i=31, ret=-1663, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=11, i=32, ret=-1629, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=12, i=33, ret=-1639, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=13, i=34, ret=-1648, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=14, i=35, ret=-1984, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=15, i=36, ret=-1998, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=16, i=37, ret=-2011, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=17, i=38, ret=-6260, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=18, i=39, ret=-6265, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=19, i=40, ret=-6269, x={14:0}, x={14:0}, x[i]=0] [L28] COND FALSE !(i < 40) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L49] RET, EXPR rangesum(x) VAL [rangesum(x)=-329, x={14:0}] [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 VAL [ret=-329, temp=-345, x={14:0}] [L52] CALL, EXPR rangesum(x) VAL [x={14:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=6, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=7, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=8, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=9, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=10, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=11, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=12, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=13, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=14, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=15, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=16, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=17, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=18, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=19, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=20, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=21, ret=0, x={14:0}, x={14:0}, x[i]=316] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=1, i=22, ret=-1, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=2, i=23, ret=-9, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=3, i=24, ret=-16, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=4, i=25, ret=-18, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=5, i=26, ret=-358, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=6, i=27, ret=-689, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=7, i=28, ret=-1022, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=8, i=29, ret=-1350, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=9, i=30, ret=-1696, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=10, i=31, ret=-1663, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=11, i=32, ret=-1629, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=12, i=33, ret=-1639, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=13, i=34, ret=-1648, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=14, i=35, ret=-1984, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=15, i=36, ret=-1998, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=16, i=37, ret=-2011, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=17, i=38, ret=-6260, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=18, i=39, ret=-6265, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=19, i=40, ret=-6269, x={14:0}, x={14:0}, x[i]=0] [L28] COND FALSE !(i < 40) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L52] RET, EXPR rangesum(x) VAL [rangesum(x)=-329, ret=-329, temp=-345, x={14:0}] [L52] ret2 = rangesum(x) [L53] EXPR x[0] [L53] temp=x[0] [L54] int i =0 ; VAL [i=0, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=1, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=2, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=3, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=4, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=5, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=6, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=7, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=8, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=9, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=10, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=11, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=12, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=13, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=14, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=15, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=16, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=17, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=18, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=19, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=20, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=21, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=22, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=23, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=24, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=25, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=26, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=27, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=28, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=29, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=30, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=31, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=32, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=33, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=34, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=35, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=36, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=37, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=38, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND TRUE i<40 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=39, ret=-329, ret2=-329, temp=-344, x={14:0}] [L54] COND FALSE !(i<40 -1) [L57] x[40 -1] = temp VAL [i=39, ret=-329, ret2=-329, temp=-344, x={14:0}] [L58] CALL, EXPR rangesum(x) VAL [x={14:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=4, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=5, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=6, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=7, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=8, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=9, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=10, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=11, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=12, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=13, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=14, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=15, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=16, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=17, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=18, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=19, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=20, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND FALSE !(i > 40/2) [L28] i++ VAL [cnt=0, i=21, ret=0, x={14:0}, x={14:0}, x[i]=577] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=1, i=22, ret=-8, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=2, i=23, ret=-15, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=3, i=24, ret=-17, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=4, i=25, ret=-357, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=5, i=26, ret=-688, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=6, i=27, ret=-1021, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=7, i=28, ret=-1349, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=8, i=29, ret=-1695, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=9, i=30, ret=-1662, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=10, i=31, ret=-1628, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=11, i=32, ret=-1638, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=12, i=33, ret=-1647, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=13, i=34, ret=-1983, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=14, i=35, ret=-1997, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=15, i=36, ret=-2010, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=16, i=37, ret=-6259, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=17, i=38, ret=-6264, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=18, i=39, ret=-6268, x={14:0}, x={14:0}, x[i]=0] [L28] COND TRUE i < 40 [L29] COND TRUE i > 40/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ VAL [cnt=19, i=40, ret=-6612, x={14:0}, x={14:0}, x[i]=0] [L28] COND FALSE !(i < 40) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L58] RET, EXPR rangesum(x) VAL [i=39, rangesum(x)=-348, ret=-329, ret2=-329, temp=-344, x={14:0}] [L58] ret5 = rangesum(x) [L60] COND TRUE ret != ret2 || ret !=ret5 VAL [i=39, ret=-329, ret2=-329, ret5=-348, temp=-344, x={14:0}] [L61] reach_error() VAL [i=39, ret=-329, ret2=-329, ret5=-348, temp=-344, x={14:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 693.6s, OverallIterations: 16, TraceHistogramMax: 120, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 704 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 722 mSDsCounter, 89 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 597 IncrementalHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 89 mSolverCounterUnsat, 181 mSDtfsCounter, 597 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3170 GetRequests, 2781 SyntacticMatches, 3 SemanticMatches, 386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4461 ImplicationChecksByTransitivity, 81.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=15, InterpolantAutomatonStates: 260, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 297.4s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 1418 NumberOfCodeBlocks, 1189 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 2126 ConstructedInterpolants, 0 QuantifiedInterpolants, 2624 SizeOfPredicates, 0 NumberOfNonLiveVariables, 5616 ConjunctsInSsa, 141 ConjunctsInUnsatCore, 27 InterpolantComputations, 3 PerfectInterpolantSequences, 46751/50021 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! [2021-11-25 20:00:38,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51497a4d-937f-4a88-8635-d9c4f1380a23/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE