./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Bangalore-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a6d563-b20b-4cb5-b7be-857e545466ee/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a6d563-b20b-4cb5-b7be-857e545466ee/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a6d563-b20b-4cb5-b7be-857e545466ee/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a6d563-b20b-4cb5-b7be-857e545466ee/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Bangalore-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a6d563-b20b-4cb5-b7be-857e545466ee/bin/utaipan-UbGMyvGFUs/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a6d563-b20b-4cb5-b7be-857e545466ee/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 585a87eac0db224d6850b5fe200672451f9df145ad1a34b890f17beb951ec393 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:27:17,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:27:17,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:27:17,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:27:17,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:27:17,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:27:17,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:27:17,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:27:17,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:27:17,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:27:17,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:27:17,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:27:17,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:27:17,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:27:17,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:27:17,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:27:17,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:27:17,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:27:17,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:27:17,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:27:17,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:27:17,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:27:17,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:27:17,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:27:17,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:27:17,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:27:17,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:27:17,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:27:17,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:27:17,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:27:17,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:27:17,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:27:17,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:27:17,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:27:17,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:27:17,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:27:17,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:27:17,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:27:17,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:27:17,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:27:17,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:27:17,443 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a6d563-b20b-4cb5-b7be-857e545466ee/bin/utaipan-UbGMyvGFUs/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-19 13:27:17,468 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:27:17,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:27:17,469 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:27:17,472 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:27:17,472 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:27:17,472 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:27:17,472 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:27:17,473 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:27:17,476 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:27:17,477 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:27:17,477 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:27:17,477 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:27:17,477 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:27:17,478 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:27:17,478 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:27:17,478 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:27:17,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:27:17,479 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 13:27:17,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:27:17,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:27:17,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:27:17,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:27:17,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:27:17,481 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-19 13:27:17,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:27:17,481 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:27:17,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:27:17,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:27:17,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:27:17,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:27:17,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:27:17,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:27:17,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:27:17,483 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:27:17,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:27:17,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:27:17,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:27:17,484 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:27:17,484 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_a4a6d563-b20b-4cb5-b7be-857e545466ee/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a6d563-b20b-4cb5-b7be-857e545466ee/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 585a87eac0db224d6850b5fe200672451f9df145ad1a34b890f17beb951ec393 [2021-11-19 13:27:17,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:27:17,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:27:17,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:27:17,870 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:27:17,871 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:27:17,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a6d563-b20b-4cb5-b7be-857e545466ee/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/termination-crafted/Bangalore-1.c [2021-11-19 13:27:17,952 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a6d563-b20b-4cb5-b7be-857e545466ee/bin/utaipan-UbGMyvGFUs/data/d6bbac37c/fd0ec56cfa294a2fa91d1150286ad2e0/FLAGaac2dbf9c [2021-11-19 13:27:18,485 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:27:18,485 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a6d563-b20b-4cb5-b7be-857e545466ee/sv-benchmarks/c/termination-crafted/Bangalore-1.c [2021-11-19 13:27:18,491 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a6d563-b20b-4cb5-b7be-857e545466ee/bin/utaipan-UbGMyvGFUs/data/d6bbac37c/fd0ec56cfa294a2fa91d1150286ad2e0/FLAGaac2dbf9c [2021-11-19 13:27:18,884 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a6d563-b20b-4cb5-b7be-857e545466ee/bin/utaipan-UbGMyvGFUs/data/d6bbac37c/fd0ec56cfa294a2fa91d1150286ad2e0 [2021-11-19 13:27:18,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:27:18,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:27:18,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:27:18,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:27:18,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:27:18,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:27:18" (1/1) ... [2021-11-19 13:27:18,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@307f93b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:18, skipping insertion in model container [2021-11-19 13:27:18,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:27:18" (1/1) ... [2021-11-19 13:27:18,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:27:18,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:27:19,124 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:27:19,128 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:27:19,148 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:27:19,172 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:27:19,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:19 WrapperNode [2021-11-19 13:27:19,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:27:19,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:27:19,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:27:19,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:27:19,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:19" (1/1) ... [2021-11-19 13:27:19,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:19" (1/1) ... [2021-11-19 13:27:19,210 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2021-11-19 13:27:19,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:27:19,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:27:19,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:27:19,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:27:19,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:19" (1/1) ... [2021-11-19 13:27:19,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:19" (1/1) ... [2021-11-19 13:27:19,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:19" (1/1) ... [2021-11-19 13:27:19,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:19" (1/1) ... [2021-11-19 13:27:19,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:19" (1/1) ... [2021-11-19 13:27:19,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:19" (1/1) ... [2021-11-19 13:27:19,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:19" (1/1) ... [2021-11-19 13:27:19,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:27:19,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:27:19,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:27:19,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:27:19,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:19" (1/1) ... [2021-11-19 13:27:19,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:27:19,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a6d563-b20b-4cb5-b7be-857e545466ee/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:27:19,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a6d563-b20b-4cb5-b7be-857e545466ee/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:27:19,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a6d563-b20b-4cb5-b7be-857e545466ee/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:27:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:27:19,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:27:19,396 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:27:19,397 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:27:19,492 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:27:19,510 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:27:19,511 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 13:27:19,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:27:19 BoogieIcfgContainer [2021-11-19 13:27:19,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:27:19,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:27:19,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:27:19,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:27:19,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:27:18" (1/3) ... [2021-11-19 13:27:19,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e253db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:27:19, skipping insertion in model container [2021-11-19 13:27:19,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:27:19" (2/3) ... [2021-11-19 13:27:19,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e253db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:27:19, skipping insertion in model container [2021-11-19 13:27:19,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:27:19" (3/3) ... [2021-11-19 13:27:19,525 INFO L111 eAbstractionObserver]: Analyzing ICFG Bangalore-1.c [2021-11-19 13:27:19,530 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:27:19,531 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 13:27:19,583 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:27:19,592 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 [2021-11-19 13:27:19,592 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 13:27:19,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:27:19,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-19 13:27:19,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:27:19,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-19 13:27:19,615 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-11-19 13:27:19,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:27:19,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1822505, now seen corresponding path program 1 times [2021-11-19 13:27:19,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:27:19,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027520327] [2021-11-19 13:27:19,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:27:19,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:27:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 13:27:19,719 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 13:27:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 13:27:19,742 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-19 13:27:19,745 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 13:27:19,746 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2021-11-19 13:27:19,748 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2021-11-19 13:27:19,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 13:27:19,754 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-19 13:27:19,758 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 13:27:19,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 01:27:19 BoogieIcfgContainer [2021-11-19 13:27:19,776 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 13:27:19,777 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 13:27:19,777 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 13:27:19,777 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 13:27:19,778 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:27:19" (3/4) ... [2021-11-19 13:27:19,780 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 13:27:19,813 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a6d563-b20b-4cb5-b7be-857e545466ee/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 13:27:19,813 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 13:27:19,815 INFO L158 Benchmark]: Toolchain (without parser) took 924.62ms. Allocated memory was 90.2MB in the beginning and 136.3MB in the end (delta: 46.1MB). Free memory was 53.7MB in the beginning and 89.4MB in the end (delta: -35.7MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2021-11-19 13:27:19,815 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory was 69.6MB in the beginning and 69.6MB in the end (delta: 42.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:27:19,816 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.18ms. Allocated memory was 90.2MB in the beginning and 136.3MB in the end (delta: 46.1MB). Free memory was 53.5MB in the beginning and 114.1MB in the end (delta: -60.6MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-11-19 13:27:19,817 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.47ms. Allocated memory is still 136.3MB. Free memory was 114.1MB in the beginning and 112.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:27:19,817 INFO L158 Benchmark]: Boogie Preprocessor took 20.00ms. Allocated memory is still 136.3MB. Free memory was 112.8MB in the beginning and 111.9MB in the end (delta: 868.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:27:19,818 INFO L158 Benchmark]: RCFGBuilder took 281.20ms. Allocated memory is still 136.3MB. Free memory was 111.9MB in the beginning and 102.9MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 13:27:19,819 INFO L158 Benchmark]: TraceAbstraction took 260.29ms. Allocated memory is still 136.3MB. Free memory was 102.6MB in the beginning and 91.0MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 13:27:19,820 INFO L158 Benchmark]: Witness Printer took 36.73ms. Allocated memory is still 136.3MB. Free memory was 91.0MB in the beginning and 89.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 13:27:19,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory was 69.6MB in the beginning and 69.6MB in the end (delta: 42.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.18ms. Allocated memory was 90.2MB in the beginning and 136.3MB in the end (delta: 46.1MB). Free memory was 53.5MB in the beginning and 114.1MB in the end (delta: -60.6MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.47ms. Allocated memory is still 136.3MB. Free memory was 114.1MB in the beginning and 112.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.00ms. Allocated memory is still 136.3MB. Free memory was 112.8MB in the beginning and 111.9MB in the end (delta: 868.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 281.20ms. Allocated memory is still 136.3MB. Free memory was 111.9MB in the beginning and 102.9MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 260.29ms. Allocated memory is still 136.3MB. Free memory was 102.6MB in the beginning and 91.0MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Witness Printer took 36.73ms. Allocated memory is still 136.3MB. Free memory was 91.0MB in the beginning and 89.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. 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: 19]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int x; [L14] int y; [L15] x = __VERIFIER_nondet_int() [L16] y = __VERIFIER_nondet_int() [L17] COND TRUE y < 1 VAL [x=0, y=-2147483648] [L18] COND TRUE x >= 0 VAL [x=0, y=-2147483648] [L19] x - y VAL [x=0, y=-2147483648] - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-19 13:27:19,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a6d563-b20b-4cb5-b7be-857e545466ee/bin/utaipan-UbGMyvGFUs/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(OVERFLOW)