./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/modulus-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_91774a5a-8674-4d2a-a429-e8866d43f8d9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_91774a5a-8674-4d2a-a429-e8866d43f8d9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_91774a5a-8674-4d2a-a429-e8866d43f8d9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_91774a5a-8674-4d2a-a429-e8866d43f8d9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/modulus-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_91774a5a-8674-4d2a-a429-e8866d43f8d9/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_91774a5a-8674-4d2a-a429-e8866d43f8d9/bin/utaipan --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 c8679dad194af8e09f8dc0270d50ea9ce875abb3 ................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_91774a5a-8674-4d2a-a429-e8866d43f8d9/bin/utaipan/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 0.2.0-a4ecdab [2020-11-28 07:39:11,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:39:11,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:39:12,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:39:12,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:39:12,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:39:12,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:39:12,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:39:12,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:39:12,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:39:12,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:39:12,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:39:12,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:39:12,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:39:12,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:39:12,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:39:12,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:39:12,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:39:12,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:39:12,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:39:12,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:39:12,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:39:12,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:39:12,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:39:12,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:39:12,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:39:12,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:39:12,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:39:12,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:39:12,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:39:12,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:39:12,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:39:12,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:39:12,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:39:12,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:39:12,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:39:12,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:39:12,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:39:12,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:39:12,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:39:12,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:39:12,117 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_91774a5a-8674-4d2a-a429-e8866d43f8d9/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-28 07:39:12,153 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:39:12,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:39:12,154 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:39:12,155 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:39:12,155 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:39:12,155 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:39:12,156 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:39:12,156 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:39:12,156 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:39:12,156 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:39:12,158 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:39:12,158 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:39:12,158 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:39:12,158 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:39:12,159 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:39:12,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:39:12,160 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:39:12,160 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:39:12,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:39:12,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:39:12,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:39:12,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:39:12,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:39:12,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:39:12,162 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 07:39:12,162 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:39:12,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:39:12,163 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:39:12,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:39:12,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:39:12,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:39:12,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:39:12,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:39:12,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:39:12,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:39:12,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:39:12,167 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:39:12,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:39:12,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:39:12,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:39:12,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:39:12,168 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-vcloud-master/worker/run_dir_91774a5a-8674-4d2a-a429-e8866d43f8d9/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_91774a5a-8674-4d2a-a429-e8866d43f8d9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8679dad194af8e09f8dc0270d50ea9ce875abb3 [2020-11-28 07:39:12,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:39:12,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:39:12,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:39:12,523 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:39:12,524 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:39:12,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_91774a5a-8674-4d2a-a429-e8866d43f8d9/bin/utaipan/../../sv-benchmarks/c/bitvector/modulus-2.i [2020-11-28 07:39:12,606 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_91774a5a-8674-4d2a-a429-e8866d43f8d9/bin/utaipan/data/905be509d/48ce6cf39ede4ea1bbc7a9a8265f35f4/FLAG765e51430 [2020-11-28 07:39:12,990 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:39:12,991 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_91774a5a-8674-4d2a-a429-e8866d43f8d9/sv-benchmarks/c/bitvector/modulus-2.i [2020-11-28 07:39:12,997 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_91774a5a-8674-4d2a-a429-e8866d43f8d9/bin/utaipan/data/905be509d/48ce6cf39ede4ea1bbc7a9a8265f35f4/FLAG765e51430 [2020-11-28 07:39:13,413 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_91774a5a-8674-4d2a-a429-e8866d43f8d9/bin/utaipan/data/905be509d/48ce6cf39ede4ea1bbc7a9a8265f35f4 [2020-11-28 07:39:13,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:39:13,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:39:13,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:39:13,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:39:13,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:39:13,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:39:13" (1/1) ... [2020-11-28 07:39:13,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db1dbc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:13, skipping insertion in model container [2020-11-28 07:39:13,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:39:13" (1/1) ... [2020-11-28 07:39:13,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:39:13,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:39:13,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:39:13,632 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:39:13,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:39:13,664 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:39:13,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:13 WrapperNode [2020-11-28 07:39:13,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:39:13,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:39:13,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:39:13,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:39:13,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:13" (1/1) ... [2020-11-28 07:39:13,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:13" (1/1) ... [2020-11-28 07:39:13,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:39:13,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:39:13,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:39:13,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:39:13,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:13" (1/1) ... [2020-11-28 07:39:13,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:13" (1/1) ... [2020-11-28 07:39:13,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:13" (1/1) ... [2020-11-28 07:39:13,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:13" (1/1) ... [2020-11-28 07:39:13,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:13" (1/1) ... [2020-11-28 07:39:13,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:13" (1/1) ... [2020-11-28 07:39:13,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:13" (1/1) ... [2020-11-28 07:39:13,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:39:13,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:39:13,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:39:13,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:39:13,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_91774a5a-8674-4d2a-a429-e8866d43f8d9/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:39:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:39:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:39:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:39:13,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:39:14,242 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:39:14,242 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-28 07:39:14,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:39:14 BoogieIcfgContainer [2020-11-28 07:39:14,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:39:14,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:39:14,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:39:14,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:39:14,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:39:13" (1/3) ... [2020-11-28 07:39:14,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68194997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:39:14, skipping insertion in model container [2020-11-28 07:39:14,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:13" (2/3) ... [2020-11-28 07:39:14,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68194997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:39:14, skipping insertion in model container [2020-11-28 07:39:14,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:39:14" (3/3) ... [2020-11-28 07:39:14,252 INFO L111 eAbstractionObserver]: Analyzing ICFG modulus-2.i [2020-11-28 07:39:14,262 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:39:14,266 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 07:39:14,277 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 07:39:14,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:39:14,299 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:39:14,300 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:39:14,300 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:39:14,300 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:39:14,300 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:39:14,300 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:39:14,300 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:39:14,312 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-28 07:39:14,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-28 07:39:14,316 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:14,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-11-28 07:39:14,316 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:39:14,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:14,321 INFO L82 PathProgramCache]: Analyzing trace with hash 3667, now seen corresponding path program 1 times [2020-11-28 07:39:14,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:14,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89103478] [2020-11-28 07:39:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:39:14,414 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:39:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:39:14,432 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:39:14,450 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:39:14,450 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:39:14,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:39:14,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:39:14 BoogieIcfgContainer [2020-11-28 07:39:14,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:39:14,468 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:39:14,468 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:39:14,468 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:39:14,469 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:39:14" (3/4) ... [2020-11-28 07:39:14,471 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:39:14,471 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:39:14,473 INFO L168 Benchmark]: Toolchain (without parser) took 1054.10 ms. Allocated memory is still 96.5 MB. Free memory was 63.6 MB in the beginning and 37.5 MB in the end (delta: 26.1 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:14,474 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 96.5 MB. Free memory was 71.0 MB in the beginning and 71.0 MB in the end (delta: 25.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:39:14,475 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.18 ms. Allocated memory is still 96.5 MB. Free memory was 63.4 MB in the beginning and 73.7 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:14,476 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.95 ms. Allocated memory is still 96.5 MB. Free memory was 73.7 MB in the beginning and 72.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:14,476 INFO L168 Benchmark]: Boogie Preprocessor took 20.05 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 70.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:39:14,477 INFO L168 Benchmark]: RCFGBuilder took 525.34 ms. Allocated memory is still 96.5 MB. Free memory was 70.9 MB in the beginning and 50.0 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:14,478 INFO L168 Benchmark]: TraceAbstraction took 221.24 ms. Allocated memory is still 96.5 MB. Free memory was 49.4 MB in the beginning and 37.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:14,478 INFO L168 Benchmark]: Witness Printer took 3.58 ms. Allocated memory is still 96.5 MB. Free memory is still 37.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:39:14,482 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 96.5 MB. Free memory was 71.0 MB in the beginning and 71.0 MB in the end (delta: 25.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 242.18 ms. Allocated memory is still 96.5 MB. Free memory was 63.4 MB in the beginning and 73.7 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.95 ms. Allocated memory is still 96.5 MB. Free memory was 73.7 MB in the beginning and 72.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.05 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 70.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 525.34 ms. Allocated memory is still 96.5 MB. Free memory was 70.9 MB in the beginning and 50.0 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 221.24 ms. Allocated memory is still 96.5 MB. Free memory was 49.4 MB in the beginning and 37.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 3.58 ms. Allocated memory is still 96.5 MB. Free memory is still 37.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 43]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of shiftLeft at line 43. Possible FailurePath: [L38] unsigned int n = __VERIFIER_nondet_uint(); [L39] unsigned int s = __VERIFIER_nondet_uint(); [L40] unsigned int d; [L41] unsigned int m; [L3] COND FALSE !(!cond) [L43] 1 << s - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...