./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark29_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_f7f7116d-aa90-460d-8e19-b4e6cbec52fa/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7f7116d-aa90-460d-8e19-b4e6cbec52fa/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_f7f7116d-aa90-460d-8e19-b4e6cbec52fa/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7f7116d-aa90-460d-8e19-b4e6cbec52fa/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark29_linear.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7f7116d-aa90-460d-8e19-b4e6cbec52fa/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_f7f7116d-aa90-460d-8e19-b4e6cbec52fa/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 8ea6dc0bafa5a28653d9fabe4d322befcb916956980332e0149835c6371af6a1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:00:11,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:00:11,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:00:11,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:00:11,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:00:11,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:00:11,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:00:11,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:00:11,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:00:11,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:00:11,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:00:11,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:00:11,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:00:11,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:00:11,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:00:11,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:00:11,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:00:11,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:00:11,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:00:11,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:00:11,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:00:11,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:00:11,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:00:11,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:00:11,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:00:11,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:00:11,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:00:11,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:00:11,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:00:11,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:00:11,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:00:11,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:00:11,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:00:11,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:00:11,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:00:11,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:00:11,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:00:11,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:00:11,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:00:11,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:00:11,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:00:11,660 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7f7116d-aa90-460d-8e19-b4e6cbec52fa/bin/utaipan-UbGMyvGFUs/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-19 14:00:11,683 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:00:11,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:00:11,685 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:00:11,685 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:00:11,685 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:00:11,686 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:00:11,686 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:00:11,687 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:00:11,687 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:00:11,687 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:00:11,688 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:00:11,688 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:00:11,688 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:00:11,689 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:00:11,689 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:00:11,690 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:00:11,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:00:11,691 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:00:11,691 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 14:00:11,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:00:11,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:00:11,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:00:11,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:00:11,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:00:11,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:00:11,694 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-19 14:00:11,694 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:00:11,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:00:11,695 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:00:11,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:00:11,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:00:11,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:00:11,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:00:11,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:00:11,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:00:11,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:00:11,698 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:00:11,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:00:11,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:00:11,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:00:11,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:00:11,699 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_f7f7116d-aa90-460d-8e19-b4e6cbec52fa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7f7116d-aa90-460d-8e19-b4e6cbec52fa/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ea6dc0bafa5a28653d9fabe4d322befcb916956980332e0149835c6371af6a1 [2021-11-19 14:00:11,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:00:11,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:00:11,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:00:11,975 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:00:11,976 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:00:11,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7f7116d-aa90-460d-8e19-b4e6cbec52fa/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/loop-zilu/benchmark29_linear.i [2021-11-19 14:00:12,044 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7f7116d-aa90-460d-8e19-b4e6cbec52fa/bin/utaipan-UbGMyvGFUs/data/fc5957c38/b479b5f85c6a41cb8c55cb8782ac5ce2/FLAGe43e92595 [2021-11-19 14:00:12,491 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:00:12,491 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7f7116d-aa90-460d-8e19-b4e6cbec52fa/sv-benchmarks/c/loop-zilu/benchmark29_linear.i [2021-11-19 14:00:12,498 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7f7116d-aa90-460d-8e19-b4e6cbec52fa/bin/utaipan-UbGMyvGFUs/data/fc5957c38/b479b5f85c6a41cb8c55cb8782ac5ce2/FLAGe43e92595 [2021-11-19 14:00:12,869 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7f7116d-aa90-460d-8e19-b4e6cbec52fa/bin/utaipan-UbGMyvGFUs/data/fc5957c38/b479b5f85c6a41cb8c55cb8782ac5ce2 [2021-11-19 14:00:12,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:00:12,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:00:12,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:00:12,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:00:12,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:00:12,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:00:12" (1/1) ... [2021-11-19 14:00:12,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@456386e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:12, skipping insertion in model container [2021-11-19 14:00:12,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:00:12" (1/1) ... [2021-11-19 14:00:12,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:00:12,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:00:13,084 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_f7f7116d-aa90-460d-8e19-b4e6cbec52fa/sv-benchmarks/c/loop-zilu/benchmark29_linear.i[868,881] [2021-11-19 14:00:13,092 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:00:13,102 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:00:13,118 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_f7f7116d-aa90-460d-8e19-b4e6cbec52fa/sv-benchmarks/c/loop-zilu/benchmark29_linear.i[868,881] [2021-11-19 14:00:13,122 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:00:13,138 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:00:13,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:13 WrapperNode [2021-11-19 14:00:13,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:00:13,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:00:13,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:00:13,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:00:13,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:13" (1/1) ... [2021-11-19 14:00:13,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:13" (1/1) ... [2021-11-19 14:00:13,179 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2021-11-19 14:00:13,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:00:13,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:00:13,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:00:13,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:00:13,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:13" (1/1) ... [2021-11-19 14:00:13,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:13" (1/1) ... [2021-11-19 14:00:13,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:13" (1/1) ... [2021-11-19 14:00:13,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:13" (1/1) ... [2021-11-19 14:00:13,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:13" (1/1) ... [2021-11-19 14:00:13,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:13" (1/1) ... [2021-11-19 14:00:13,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:13" (1/1) ... [2021-11-19 14:00:13,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:00:13,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:00:13,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:00:13,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:00:13,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:13" (1/1) ... [2021-11-19 14:00:13,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:00:13,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7f7116d-aa90-460d-8e19-b4e6cbec52fa/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:00:13,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7f7116d-aa90-460d-8e19-b4e6cbec52fa/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:00:13,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7f7116d-aa90-460d-8e19-b4e6cbec52fa/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:00:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:00:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 14:00:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:00:13,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:00:13,393 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:00:13,395 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:00:13,587 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:00:13,628 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:00:13,628 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:00:13,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:00:13 BoogieIcfgContainer [2021-11-19 14:00:13,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:00:13,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:00:13,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:00:13,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:00:13,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:00:12" (1/3) ... [2021-11-19 14:00:13,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4baa37cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:00:13, skipping insertion in model container [2021-11-19 14:00:13,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:00:13" (2/3) ... [2021-11-19 14:00:13,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4baa37cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:00:13, skipping insertion in model container [2021-11-19 14:00:13,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:00:13" (3/3) ... [2021-11-19 14:00:13,679 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark29_linear.i [2021-11-19 14:00:13,686 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:00:13,686 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-19 14:00:13,792 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:00:13,801 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 14:00:13,801 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-19 14:00:13,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.7) internal successors, (17), 14 states have internal predecessors, (17), 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 14:00:13,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-19 14:00:13,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:13,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-19 14:00:13,828 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-19 14:00:13,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:13,837 INFO L85 PathProgramCache]: Analyzing trace with hash 2301147, now seen corresponding path program 1 times [2021-11-19 14:00:13,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:00:13,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440376240] [2021-11-19 14:00:13,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:13,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:00:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:00:13,971 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 14:00:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:00:14,012 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-19 14:00:14,015 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 14:00:14,016 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2021-11-19 14:00:14,019 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2021-11-19 14:00:14,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2021-11-19 14:00:14,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2021-11-19 14:00:14,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 14:00:14,029 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-19 14:00:14,034 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:00:14,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:00:14 BoogieIcfgContainer [2021-11-19 14:00:14,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:00:14,071 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:00:14,071 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:00:14,072 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:00:14,072 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:00:13" (3/4) ... [2021-11-19 14:00:14,074 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 14:00:14,110 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7f7116d-aa90-460d-8e19-b4e6cbec52fa/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 14:00:14,110 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:00:14,112 INFO L158 Benchmark]: Toolchain (without parser) took 1237.82ms. Allocated memory is still 111.1MB. Free memory was 69.1MB in the beginning and 59.7MB in the end (delta: 9.4MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2021-11-19 14:00:14,113 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:00:14,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.88ms. Allocated memory is still 111.1MB. Free memory was 68.8MB in the beginning and 86.3MB in the end (delta: -17.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:00:14,114 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.33ms. Allocated memory is still 111.1MB. Free memory was 86.3MB in the beginning and 84.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:00:14,115 INFO L158 Benchmark]: Boogie Preprocessor took 22.35ms. Allocated memory is still 111.1MB. Free memory was 84.8MB in the beginning and 84.1MB in the end (delta: 693.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:00:14,116 INFO L158 Benchmark]: RCFGBuilder took 427.48ms. Allocated memory is still 111.1MB. Free memory was 84.0MB in the beginning and 74.1MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 14:00:14,117 INFO L158 Benchmark]: TraceAbstraction took 432.77ms. Allocated memory is still 111.1MB. Free memory was 73.5MB in the beginning and 61.1MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:00:14,118 INFO L158 Benchmark]: Witness Printer took 39.56ms. Allocated memory is still 111.1MB. Free memory was 61.1MB in the beginning and 59.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:00:14,123 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.88ms. Allocated memory is still 111.1MB. Free memory was 68.8MB in the beginning and 86.3MB in the end (delta: -17.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.33ms. Allocated memory is still 111.1MB. Free memory was 86.3MB in the beginning and 84.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.35ms. Allocated memory is still 111.1MB. Free memory was 84.8MB in the beginning and 84.1MB in the end (delta: 693.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 427.48ms. Allocated memory is still 111.1MB. Free memory was 84.0MB in the beginning and 74.1MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 432.77ms. Allocated memory is still 111.1MB. Free memory was 73.5MB in the beginning and 61.1MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 39.56ms. Allocated memory is still 111.1MB. Free memory was 61.1MB in the beginning and 59.7MB in the end (delta: 1.5MB). 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: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(x