./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark50_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f3dff43-4e12-4323-8ca5-8fe359055319/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f3dff43-4e12-4323-8ca5-8fe359055319/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f3dff43-4e12-4323-8ca5-8fe359055319/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f3dff43-4e12-4323-8ca5-8fe359055319/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark50_linear.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f3dff43-4e12-4323-8ca5-8fe359055319/bin/utaipan-mTDlp9Zugs/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f3dff43-4e12-4323-8ca5-8fe359055319/bin/utaipan-mTDlp9Zugs --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 84996ecf16e27ada0de83a19c67f52bf36701d56 .................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:09:04,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:09:04,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:09:04,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:09:04,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:09:04,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:09:04,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:09:04,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:09:04,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:09:04,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:09:04,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:09:04,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:09:04,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:09:04,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:09:04,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:09:04,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:09:04,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:09:04,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:09:04,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:09:04,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:09:04,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:09:04,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:09:04,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:09:04,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:09:04,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:09:04,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:09:04,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:09:04,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:09:04,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:09:04,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:09:04,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:09:04,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:09:04,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:09:04,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:09:04,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:09:04,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:09:04,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:09:04,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:09:04,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:09:04,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:09:04,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:09:04,649 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f3dff43-4e12-4323-8ca5-8fe359055319/bin/utaipan-mTDlp9Zugs/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-16 03:09:04,691 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:09:04,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:09:04,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:09:04,695 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:09:04,696 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:09:04,696 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:09:04,696 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:09:04,696 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:09:04,697 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:09:04,697 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:09:04,700 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:09:04,701 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:09:04,701 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:09:04,701 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:09:04,701 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:09:04,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:09:04,702 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:09:04,702 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 03:09:04,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:09:04,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:09:04,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:09:04,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:09:04,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:09:04,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:09:04,704 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-16 03:09:04,704 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:09:04,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:09:04,705 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:09:04,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:09:04,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:09:04,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:09:04,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:09:04,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:09:04,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:09:04,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:09:04,707 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:09:04,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:09:04,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:09:04,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:09:04,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:09:04,708 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_6f3dff43-4e12-4323-8ca5-8fe359055319/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f3dff43-4e12-4323-8ca5-8fe359055319/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 84996ecf16e27ada0de83a19c67f52bf36701d56 [2021-10-16 03:09:04,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:09:05,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:09:05,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:09:05,016 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:09:05,017 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:09:05,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f3dff43-4e12-4323-8ca5-8fe359055319/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loop-zilu/benchmark50_linear.i [2021-10-16 03:09:05,094 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f3dff43-4e12-4323-8ca5-8fe359055319/bin/utaipan-mTDlp9Zugs/data/1ad7c0d6e/4267afadadbb447283ae142e75bbca81/FLAG14f5b3f21 [2021-10-16 03:09:05,596 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:09:05,597 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f3dff43-4e12-4323-8ca5-8fe359055319/sv-benchmarks/c/loop-zilu/benchmark50_linear.i [2021-10-16 03:09:05,604 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f3dff43-4e12-4323-8ca5-8fe359055319/bin/utaipan-mTDlp9Zugs/data/1ad7c0d6e/4267afadadbb447283ae142e75bbca81/FLAG14f5b3f21 [2021-10-16 03:09:05,958 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f3dff43-4e12-4323-8ca5-8fe359055319/bin/utaipan-mTDlp9Zugs/data/1ad7c0d6e/4267afadadbb447283ae142e75bbca81 [2021-10-16 03:09:05,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:09:05,965 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:09:05,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:09:05,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:09:05,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:09:05,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:09:05" (1/1) ... [2021-10-16 03:09:05,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70cdc906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:05, skipping insertion in model container [2021-10-16 03:09:05,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:09:05" (1/1) ... [2021-10-16 03:09:05,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:09:06,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:09:06,249 WARN L228 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_6f3dff43-4e12-4323-8ca5-8fe359055319/sv-benchmarks/c/loop-zilu/benchmark50_linear.i[868,881] [2021-10-16 03:09:06,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:09:06,276 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:09:06,296 WARN L228 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_6f3dff43-4e12-4323-8ca5-8fe359055319/sv-benchmarks/c/loop-zilu/benchmark50_linear.i[868,881] [2021-10-16 03:09:06,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:09:06,317 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:09:06,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:06 WrapperNode [2021-10-16 03:09:06,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:09:06,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:09:06,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:09:06,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:09:06,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:06" (1/1) ... [2021-10-16 03:09:06,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:06" (1/1) ... [2021-10-16 03:09:06,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:09:06,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:09:06,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:09:06,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:09:06,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:06" (1/1) ... [2021-10-16 03:09:06,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:06" (1/1) ... [2021-10-16 03:09:06,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:06" (1/1) ... [2021-10-16 03:09:06,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:06" (1/1) ... [2021-10-16 03:09:06,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:06" (1/1) ... [2021-10-16 03:09:06,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:06" (1/1) ... [2021-10-16 03:09:06,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:06" (1/1) ... [2021-10-16 03:09:06,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:09:06,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:09:06,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:09:06,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:09:06,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:06" (1/1) ... [2021-10-16 03:09:06,415 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:09:06,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f3dff43-4e12-4323-8ca5-8fe359055319/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:09:06,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f3dff43-4e12-4323-8ca5-8fe359055319/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:09:06,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f3dff43-4e12-4323-8ca5-8fe359055319/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:09:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:09:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:09:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:09:06,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:09:06,754 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:09:06,754 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 03:09:06,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:09:06 BoogieIcfgContainer [2021-10-16 03:09:06,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:09:06,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:09:06,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:09:06,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:09:06,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:09:05" (1/3) ... [2021-10-16 03:09:06,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216ed481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:09:06, skipping insertion in model container [2021-10-16 03:09:06,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:09:06" (2/3) ... [2021-10-16 03:09:06,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216ed481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:09:06, skipping insertion in model container [2021-10-16 03:09:06,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:09:06" (3/3) ... [2021-10-16 03:09:06,776 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark50_linear.i [2021-10-16 03:09:06,782 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:09:06,782 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-16 03:09:06,849 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:09:06,857 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, mConcurrency=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 [2021-10-16 03:09:06,857 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-16 03:09:06,874 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) [2021-10-16 03:09:06,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-16 03:09:06,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:09:06,880 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-16 03:09:06,881 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)] === [2021-10-16 03:09:06,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:09:06,888 INFO L82 PathProgramCache]: Analyzing trace with hash 2297, now seen corresponding path program 1 times [2021-10-16 03:09:06,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:09:06,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237441595] [2021-10-16 03:09:06,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:09:06,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:09:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:09:07,007 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 03:09:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:09:07,051 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 03:09:07,053 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 03:09:07,054 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 03:09:07,057 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 03:09:07,057 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 03:09:07,058 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 03:09:07,058 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 03:09:07,058 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 03:09:07,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:09:07,066 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:09:07,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:09:07 BoogieIcfgContainer [2021-10-16 03:09:07,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:09:07,084 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:09:07,084 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:09:07,084 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:09:07,085 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:09:06" (3/4) ... [2021-10-16 03:09:07,089 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 03:09:07,135 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f3dff43-4e12-4323-8ca5-8fe359055319/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:09:07,135 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:09:07,137 INFO L168 Benchmark]: Toolchain (without parser) took 1171.33 ms. Allocated memory is still 100.7 MB. Free memory was 62.7 MB in the beginning and 48.1 MB in the end (delta: 14.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:07,137 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory is still 79.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:09:07,138 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.43 ms. Allocated memory is still 100.7 MB. Free memory was 62.5 MB in the beginning and 76.6 MB in the end (delta: -14.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:07,139 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.27 ms. Allocated memory is still 100.7 MB. Free memory was 76.6 MB in the beginning and 75.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:07,140 INFO L168 Benchmark]: Boogie Preprocessor took 44.29 ms. Allocated memory is still 100.7 MB. Free memory was 75.4 MB in the beginning and 74.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:09:07,141 INFO L168 Benchmark]: RCFGBuilder took 352.11 ms. Allocated memory is still 100.7 MB. Free memory was 74.1 MB in the beginning and 63.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:07,142 INFO L168 Benchmark]: TraceAbstraction took 323.80 ms. Allocated memory is still 100.7 MB. Free memory was 62.8 MB in the beginning and 49.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:07,142 INFO L168 Benchmark]: Witness Printer took 51.40 ms. Allocated memory is still 100.7 MB. Free memory was 49.7 MB in the beginning and 48.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:09:07,147 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory is still 79.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 335.43 ms. Allocated memory is still 100.7 MB. Free memory was 62.5 MB in the beginning and 76.6 MB in the end (delta: -14.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.27 ms. Allocated memory is still 100.7 MB. Free memory was 76.6 MB in the beginning and 75.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.29 ms. Allocated memory is still 100.7 MB. Free memory was 75.4 MB in the beginning and 74.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 352.11 ms. Allocated memory is still 100.7 MB. Free memory was 74.1 MB in the beginning and 63.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 323.80 ms. Allocated memory is still 100.7 MB. Free memory was 62.8 MB in the beginning and 49.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 51.40 ms. Allocated memory is still 100.7 MB. Free memory was 49.7 MB in the beginning and 48.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 22]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int xa = __VERIFIER_nondet_int(); [L21] int ya = __VERIFIER_nondet_int(); [L22] xa + ya - UnprovableResult [Line: 22]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 25]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 25]: 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, 17 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 217.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 9.9ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.7ms SsaConstructionTime, 34.2ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 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! [2021-10-16 03:09:07,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f3dff43-4e12-4323-8ca5-8fe359055319/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...