./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/num_conversion_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8d98b3-27fd-4e93-9432-0f82c35754cc/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8d98b3-27fd-4e93-9432-0f82c35754cc/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8d98b3-27fd-4e93-9432-0f82c35754cc/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8d98b3-27fd-4e93-9432-0f82c35754cc/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8d98b3-27fd-4e93-9432-0f82c35754cc/bin/utaipan-9zjyvhn0QE/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8d98b3-27fd-4e93-9432-0f82c35754cc/bin/utaipan-9zjyvhn0QE --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 eed2e8df987302e7b4776cd78a5dfa18f2ec05bebbebf3053d8131bf9a8de623 ...................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8d98b3-27fd-4e93-9432-0f82c35754cc/bin/utaipan-9zjyvhn0QE/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:48:35,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:48:35,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:48:35,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:48:35,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:48:35,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:48:35,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:48:35,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:48:35,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:48:35,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:48:35,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:48:35,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:48:35,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:48:35,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:48:35,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:48:35,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:48:35,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:48:35,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:48:35,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:48:35,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:48:35,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:48:35,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:48:35,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:48:35,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:48:35,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:48:35,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:48:35,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:48:35,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:48:35,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:48:35,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:48:35,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:48:35,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:48:35,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:48:35,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:48:35,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:48:35,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:48:35,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:48:35,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:48:35,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:48:35,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:48:35,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:48:35,744 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8d98b3-27fd-4e93-9432-0f82c35754cc/bin/utaipan-9zjyvhn0QE/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-24 10:48:35,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:48:35,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:48:35,771 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:48:35,775 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:48:35,775 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:48:35,775 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:48:35,775 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:48:35,775 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:48:35,776 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:48:35,776 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:48:35,776 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:48:35,776 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:48:35,776 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:48:35,777 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:48:35,777 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:48:35,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:48:35,778 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:48:35,778 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:48:35,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:48:35,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:48:35,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:48:35,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:48:35,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:48:35,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:48:35,779 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-24 10:48:35,779 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:48:35,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:48:35,780 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:48:35,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:48:35,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:48:35,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:48:35,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:48:35,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:48:35,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:48:35,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:48:35,781 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:48:35,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:48:35,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:48:35,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:48:35,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:48:35,782 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_5e8d98b3-27fd-4e93-9432-0f82c35754cc/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8d98b3-27fd-4e93-9432-0f82c35754cc/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eed2e8df987302e7b4776cd78a5dfa18f2ec05bebbebf3053d8131bf9a8de623 [2021-10-24 10:48:36,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:48:36,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:48:36,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:48:36,091 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:48:36,091 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:48:36,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8d98b3-27fd-4e93-9432-0f82c35754cc/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/bitvector/num_conversion_2.c [2021-10-24 10:48:36,174 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8d98b3-27fd-4e93-9432-0f82c35754cc/bin/utaipan-9zjyvhn0QE/data/393ff514a/fb332028bbc947ca851e261ebe549af0/FLAG8c65b8265 [2021-10-24 10:48:36,647 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:48:36,648 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8d98b3-27fd-4e93-9432-0f82c35754cc/sv-benchmarks/c/bitvector/num_conversion_2.c [2021-10-24 10:48:36,658 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8d98b3-27fd-4e93-9432-0f82c35754cc/bin/utaipan-9zjyvhn0QE/data/393ff514a/fb332028bbc947ca851e261ebe549af0/FLAG8c65b8265 [2021-10-24 10:48:37,119 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8d98b3-27fd-4e93-9432-0f82c35754cc/bin/utaipan-9zjyvhn0QE/data/393ff514a/fb332028bbc947ca851e261ebe549af0 [2021-10-24 10:48:37,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:48:37,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:48:37,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:48:37,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:48:37,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:48:37,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:48:37" (1/1) ... [2021-10-24 10:48:37,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56b311f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37, skipping insertion in model container [2021-10-24 10:48:37,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:48:37" (1/1) ... [2021-10-24 10:48:37,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:48:37,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:48:37,320 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_5e8d98b3-27fd-4e93-9432-0f82c35754cc/sv-benchmarks/c/bitvector/num_conversion_2.c[380,393] [2021-10-24 10:48:37,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:48:37,340 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:48:37,357 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_5e8d98b3-27fd-4e93-9432-0f82c35754cc/sv-benchmarks/c/bitvector/num_conversion_2.c[380,393] [2021-10-24 10:48:37,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:48:37,391 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:48:37,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37 WrapperNode [2021-10-24 10:48:37,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:48:37,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:48:37,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:48:37,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:48:37,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (1/1) ... [2021-10-24 10:48:37,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (1/1) ... [2021-10-24 10:48:37,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:48:37,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:48:37,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:48:37,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:48:37,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (1/1) ... [2021-10-24 10:48:37,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (1/1) ... [2021-10-24 10:48:37,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (1/1) ... [2021-10-24 10:48:37,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (1/1) ... [2021-10-24 10:48:37,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (1/1) ... [2021-10-24 10:48:37,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (1/1) ... [2021-10-24 10:48:37,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (1/1) ... [2021-10-24 10:48:37,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:48:37,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:48:37,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:48:37,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:48:37,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (1/1) ... [2021-10-24 10:48:37,458 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:48:37,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8d98b3-27fd-4e93-9432-0f82c35754cc/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:48:37,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8d98b3-27fd-4e93-9432-0f82c35754cc/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:48:37,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8d98b3-27fd-4e93-9432-0f82c35754cc/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:48:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:48:37,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:48:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:48:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:48:37,746 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:48:37,746 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-24 10:48:37,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:48:37 BoogieIcfgContainer [2021-10-24 10:48:37,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:48:37,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:48:37,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:48:37,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:48:37,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:48:37" (1/3) ... [2021-10-24 10:48:37,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d7b41f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:48:37, skipping insertion in model container [2021-10-24 10:48:37,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:37" (2/3) ... [2021-10-24 10:48:37,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d7b41f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:48:37, skipping insertion in model container [2021-10-24 10:48:37,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:48:37" (3/3) ... [2021-10-24 10:48:37,758 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_2.c [2021-10-24 10:48:37,764 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:48:37,764 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-24 10:48:37,812 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:48:37,819 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 [2021-10-24 10:48:37,820 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-24 10:48:37,851 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 15 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) [2021-10-24 10:48:37,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 10:48:37,855 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:48:37,856 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 10:48:37,856 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)] === [2021-10-24 10:48:37,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:48:37,862 INFO L82 PathProgramCache]: Analyzing trace with hash 76272, now seen corresponding path program 1 times [2021-10-24 10:48:37,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:48:37,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169989967] [2021-10-24 10:48:37,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:48:37,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:48:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:48:38,054 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:48:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:48:38,120 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:48:38,122 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:48:38,124 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:48:38,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:48:38,127 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:48:38,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:48:38,129 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:48:38,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 10:48:38,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:48:38,138 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:48:38,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:48:38 BoogieIcfgContainer [2021-10-24 10:48:38,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:48:38,167 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:48:38,167 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:48:38,168 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:48:38,169 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:48:37" (3/4) ... [2021-10-24 10:48:38,173 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:48:38,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:48:38,177 INFO L168 Benchmark]: Toolchain (without parser) took 1050.33 ms. Allocated memory is still 115.3 MB. Free memory was 81.1 MB in the beginning and 63.1 MB in the end (delta: 18.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:48:38,179 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory was 35.6 MB in the beginning and 35.6 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:48:38,180 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.37 ms. Allocated memory is still 115.3 MB. Free memory was 80.9 MB in the beginning and 90.4 MB in the end (delta: -9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:48:38,182 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.08 ms. Allocated memory is still 115.3 MB. Free memory was 90.4 MB in the beginning and 89.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:48:38,183 INFO L168 Benchmark]: Boogie Preprocessor took 21.22 ms. Allocated memory is still 115.3 MB. Free memory was 89.1 MB in the beginning and 87.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:48:38,184 INFO L168 Benchmark]: RCFGBuilder took 299.57 ms. Allocated memory is still 115.3 MB. Free memory was 87.9 MB in the beginning and 77.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:48:38,191 INFO L168 Benchmark]: TraceAbstraction took 411.05 ms. Allocated memory is still 115.3 MB. Free memory was 76.5 MB in the beginning and 63.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:48:38,191 INFO L168 Benchmark]: Witness Printer took 6.85 ms. Allocated memory is still 115.3 MB. Free memory was 63.5 MB in the beginning and 63.1 MB in the end (delta: 469.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:48:38,197 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory was 35.6 MB in the beginning and 35.6 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 263.37 ms. Allocated memory is still 115.3 MB. Free memory was 80.9 MB in the beginning and 90.4 MB in the end (delta: -9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.08 ms. Allocated memory is still 115.3 MB. Free memory was 90.4 MB in the beginning and 89.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.22 ms. Allocated memory is still 115.3 MB. Free memory was 89.1 MB in the beginning and 87.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 299.57 ms. Allocated memory is still 115.3 MB. Free memory was 87.9 MB in the beginning and 77.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 411.05 ms. Allocated memory is still 115.3 MB. Free memory was 76.5 MB in the beginning and 63.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.85 ms. Allocated memory is still 115.3 MB. Free memory was 63.5 MB in the beginning and 63.1 MB in the end (delta: 469.0 kB). There was no memory consumed. 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 - UnprovableResult [Line: 23]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of shiftLeft at line 23. Possible FailurePath: [L16] unsigned char x = __VERIFIER_nondet_uchar(); [L17] unsigned char y; [L18] unsigned char c; [L20] y = 0 [L21] c = 0 [L22] COND TRUE c < (unsigned char)8 [L23] ((unsigned char)1) << c - UnprovableResult [Line: 23]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 28]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 28]: 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, 16 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 326.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 24.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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: 14.9ms SsaConstructionTime, 52.7ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 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 could not prove your program: unable to determine feasibility of some traces [2021-10-24 10:48:38,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e8d98b3-27fd-4e93-9432-0f82c35754cc/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...