./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark48_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_9cbe636f-8a9e-4804-bcf9-08ce1dc058ce/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbe636f-8a9e-4804-bcf9-08ce1dc058ce/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_9cbe636f-8a9e-4804-bcf9-08ce1dc058ce/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbe636f-8a9e-4804-bcf9-08ce1dc058ce/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark48_linear.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbe636f-8a9e-4804-bcf9-08ce1dc058ce/bin/utaipan-UbGMyvGFUs/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbe636f-8a9e-4804-bcf9-08ce1dc058ce/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 32bit --witnessprinter.graph.data.programhash 12586f28203ad48b9026fe813c42990970a62196c7a1d36489c96f441bedf780 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:35:08,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:35:08,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:35:08,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:35:08,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:35:08,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:35:08,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:35:08,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:35:09,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:35:09,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:35:09,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:35:09,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:35:09,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:35:09,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:35:09,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:35:09,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:35:09,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:35:09,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:35:09,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:35:09,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:35:09,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:35:09,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:35:09,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:35:09,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:35:09,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:35:09,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:35:09,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:35:09,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:35:09,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:35:09,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:35:09,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:35:09,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:35:09,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:35:09,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:35:09,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:35:09,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:35:09,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:35:09,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:35:09,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:35:09,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:35:09,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:35:09,051 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbe636f-8a9e-4804-bcf9-08ce1dc058ce/bin/utaipan-UbGMyvGFUs/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-19 14:35:09,097 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:35:09,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:35:09,099 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:35:09,099 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:35:09,099 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:35:09,099 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:35:09,100 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:35:09,100 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:35:09,100 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:35:09,100 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:35:09,101 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:35:09,101 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:35:09,101 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:35:09,102 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:35:09,102 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:35:09,102 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:35:09,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:35:09,103 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:35:09,103 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:35:09,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:35:09,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:35:09,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:35:09,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:35:09,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:35:09,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:35:09,105 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-19 14:35:09,105 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:35:09,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:35:09,106 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:35:09,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:35:09,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:35:09,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:35:09,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:35:09,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:35:09,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:35:09,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:35:09,108 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:35:09,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:35:09,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:35:09,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:35:09,109 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:35:09,109 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_9cbe636f-8a9e-4804-bcf9-08ce1dc058ce/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbe636f-8a9e-4804-bcf9-08ce1dc058ce/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12586f28203ad48b9026fe813c42990970a62196c7a1d36489c96f441bedf780 [2021-11-19 14:35:09,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:35:09,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:35:09,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:35:09,388 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:35:09,389 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:35:09,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbe636f-8a9e-4804-bcf9-08ce1dc058ce/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/loop-zilu/benchmark48_linear.i [2021-11-19 14:35:09,465 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbe636f-8a9e-4804-bcf9-08ce1dc058ce/bin/utaipan-UbGMyvGFUs/data/427350297/34223a92e2df47758007f83fb53b7cfc/FLAG55b4f0360 [2021-11-19 14:35:09,889 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:35:09,890 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbe636f-8a9e-4804-bcf9-08ce1dc058ce/sv-benchmarks/c/loop-zilu/benchmark48_linear.i [2021-11-19 14:35:09,895 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbe636f-8a9e-4804-bcf9-08ce1dc058ce/bin/utaipan-UbGMyvGFUs/data/427350297/34223a92e2df47758007f83fb53b7cfc/FLAG55b4f0360 [2021-11-19 14:35:10,266 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbe636f-8a9e-4804-bcf9-08ce1dc058ce/bin/utaipan-UbGMyvGFUs/data/427350297/34223a92e2df47758007f83fb53b7cfc [2021-11-19 14:35:10,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:35:10,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:35:10,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:35:10,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:35:10,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:35:10,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:10" (1/1) ... [2021-11-19 14:35:10,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12cd871b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:10, skipping insertion in model container [2021-11-19 14:35:10,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:10" (1/1) ... [2021-11-19 14:35:10,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:35:10,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:35:10,488 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_9cbe636f-8a9e-4804-bcf9-08ce1dc058ce/sv-benchmarks/c/loop-zilu/benchmark48_linear.i[868,881] [2021-11-19 14:35:10,497 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:35:10,507 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:35:10,520 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_9cbe636f-8a9e-4804-bcf9-08ce1dc058ce/sv-benchmarks/c/loop-zilu/benchmark48_linear.i[868,881] [2021-11-19 14:35:10,523 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:35:10,535 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:35:10,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:10 WrapperNode [2021-11-19 14:35:10,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:35:10,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:35:10,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:35:10,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:35:10,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:10" (1/1) ... [2021-11-19 14:35:10,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:10" (1/1) ... [2021-11-19 14:35:10,574 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2021-11-19 14:35:10,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:35:10,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:35:10,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:35:10,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:35:10,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:10" (1/1) ... [2021-11-19 14:35:10,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:10" (1/1) ... [2021-11-19 14:35:10,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:10" (1/1) ... [2021-11-19 14:35:10,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:10" (1/1) ... [2021-11-19 14:35:10,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:10" (1/1) ... [2021-11-19 14:35:10,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:10" (1/1) ... [2021-11-19 14:35:10,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:10" (1/1) ... [2021-11-19 14:35:10,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:35:10,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:35:10,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:35:10,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:35:10,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:10" (1/1) ... [2021-11-19 14:35:10,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:35:10,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbe636f-8a9e-4804-bcf9-08ce1dc058ce/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:35:10,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbe636f-8a9e-4804-bcf9-08ce1dc058ce/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:35:10,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbe636f-8a9e-4804-bcf9-08ce1dc058ce/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:35:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:35:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 14:35:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:35:10,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:35:10,740 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:35:10,741 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:35:10,842 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:35:10,871 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:35:10,872 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:35:10,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:35:10 BoogieIcfgContainer [2021-11-19 14:35:10,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:35:10,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:35:10,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:35:10,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:35:10,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:35:10" (1/3) ... [2021-11-19 14:35:10,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ea5e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:35:10, skipping insertion in model container [2021-11-19 14:35:10,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:10" (2/3) ... [2021-11-19 14:35:10,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ea5e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:35:10, skipping insertion in model container [2021-11-19 14:35:10,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:35:10" (3/3) ... [2021-11-19 14:35:10,884 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark48_linear.i [2021-11-19 14:35:10,889 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:35:10,890 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-19 14:35:10,940 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:35:10,948 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 14:35:10,948 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-19 14:35:10,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 10 states have (on average 1.8) internal successors, (18), 16 states have internal predecessors, (18), 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 14:35:10,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-19 14:35:10,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:35:10,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-19 14:35:10,969 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-19 14:35:10,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:35:10,975 INFO L85 PathProgramCache]: Analyzing trace with hash 2181983, now seen corresponding path program 1 times [2021-11-19 14:35:10,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:35:10,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390947585] [2021-11-19 14:35:10,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:35:10,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:35:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:35:11,072 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 14:35:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:35:11,101 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-19 14:35:11,103 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 14:35:11,104 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2021-11-19 14:35:11,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2021-11-19 14:35:11,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2021-11-19 14:35:11,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2021-11-19 14:35:11,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2021-11-19 14:35:11,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2021-11-19 14:35:11,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 14:35:11,113 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-19 14:35:11,116 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:35:11,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:35:11 BoogieIcfgContainer [2021-11-19 14:35:11,136 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:35:11,137 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:35:11,137 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:35:11,137 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:35:11,137 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:35:10" (3/4) ... [2021-11-19 14:35:11,140 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 14:35:11,173 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbe636f-8a9e-4804-bcf9-08ce1dc058ce/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 14:35:11,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:35:11,175 INFO L158 Benchmark]: Toolchain (without parser) took 903.31ms. Allocated memory was 92.3MB in the beginning and 115.3MB in the end (delta: 23.1MB). Free memory was 57.6MB in the beginning and 64.1MB in the end (delta: -6.4MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-11-19 14:35:11,175 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 92.3MB. Free memory was 61.6MB in the beginning and 61.6MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:35:11,176 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.46ms. Allocated memory was 92.3MB in the beginning and 115.3MB in the end (delta: 23.1MB). Free memory was 57.6MB in the beginning and 91.3MB in the end (delta: -33.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:35:11,177 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.42ms. Allocated memory is still 115.3MB. Free memory was 91.1MB in the beginning and 89.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:35:11,177 INFO L158 Benchmark]: Boogie Preprocessor took 20.31ms. Allocated memory is still 115.3MB. Free memory was 89.2MB in the beginning and 88.4MB in the end (delta: 859.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:35:11,178 INFO L158 Benchmark]: RCFGBuilder took 277.82ms. Allocated memory is still 115.3MB. Free memory was 88.4MB in the beginning and 78.7MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:35:11,178 INFO L158 Benchmark]: TraceAbstraction took 260.38ms. Allocated memory is still 115.3MB. Free memory was 78.5MB in the beginning and 65.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:35:11,179 INFO L158 Benchmark]: Witness Printer took 36.61ms. Allocated memory is still 115.3MB. Free memory was 65.3MB in the beginning and 64.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:35:11,182 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 92.3MB. Free memory was 61.6MB in the beginning and 61.6MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.46ms. Allocated memory was 92.3MB in the beginning and 115.3MB in the end (delta: 23.1MB). Free memory was 57.6MB in the beginning and 91.3MB in the end (delta: -33.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.42ms. Allocated memory is still 115.3MB. Free memory was 91.1MB in the beginning and 89.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.31ms. Allocated memory is still 115.3MB. Free memory was 89.2MB in the beginning and 88.4MB in the end (delta: 859.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 277.82ms. Allocated memory is still 115.3MB. Free memory was 88.4MB in the beginning and 78.7MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 260.38ms. Allocated memory is still 115.3MB. Free memory was 78.5MB in the beginning and 65.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 36.61ms. Allocated memory is still 115.3MB. Free memory was 65.3MB in the beginning and 64.1MB in the end (delta: 1.2MB). There was no memory consumed. 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: 25]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int i = __VERIFIER_nondet_int(); [L21] int j = __VERIFIER_nondet_int(); [L22] int k = __VERIFIER_nondet_int(); [L23] COND FALSE !(!(i 0)) VAL [i=-1, j=0, k=2147483647] [L24] COND TRUE i