./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bcb45-9618-4579-aa8e-b25032ca3207/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bcb45-9618-4579-aa8e-b25032ca3207/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bcb45-9618-4579-aa8e-b25032ca3207/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bcb45-9618-4579-aa8e-b25032ca3207/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/modulus-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bcb45-9618-4579-aa8e-b25032ca3207/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bcb45-9618-4579-aa8e-b25032ca3207/bin/uautomizer-Z5i5R5N3CC --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 Automizer --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_worker_vcloud-master_on_vcloud-master/run_dir_772bcb45-9618-4579-aa8e-b25032ca3207/bin/uautomizer-Z5i5R5N3CC/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 0.2.0-7b2dab5 [2021-10-11 00:19:43,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:19:43,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:19:43,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:19:43,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:19:43,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:19:43,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:19:43,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:19:43,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:19:43,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:19:43,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:19:43,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:19:43,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:19:43,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:19:43,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:19:43,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:19:43,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:19:43,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:19:43,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:19:43,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:19:43,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:19:43,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:19:43,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:19:43,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:19:43,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:19:43,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:19:43,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:19:43,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:19:43,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:19:43,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:19:43,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:19:43,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:19:43,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:19:43,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:19:43,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:19:43,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:19:43,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:19:43,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:19:43,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:19:43,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:19:43,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:19:43,452 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bcb45-9618-4579-aa8e-b25032ca3207/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-11 00:19:43,500 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:19:43,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:19:43,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:19:43,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:19:43,504 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:19:43,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:19:43,504 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:19:43,505 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:19:43,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:19:43,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:19:43,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:19:43,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:19:43,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:19:43,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:19:43,515 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 00:19:43,516 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:19:43,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:19:43,516 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:19:43,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:19:43,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:19:43,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:19:43,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:19:43,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:19:43,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:19:43,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:19:43,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:19:43,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:19:43,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:19:43,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:19:43,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:19:43,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_772bcb45-9618-4579-aa8e-b25032ca3207/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bcb45-9618-4579-aa8e-b25032ca3207/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8679dad194af8e09f8dc0270d50ea9ce875abb3 [2021-10-11 00:19:43,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:19:43,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:19:43,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:19:43,950 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:19:43,951 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:19:43,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bcb45-9618-4579-aa8e-b25032ca3207/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/bitvector/modulus-2.i [2021-10-11 00:19:44,053 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bcb45-9618-4579-aa8e-b25032ca3207/bin/uautomizer-Z5i5R5N3CC/data/61140b6e0/952d002fd1aa412aa44368946884a3d3/FLAG047da25b3 [2021-10-11 00:19:44,559 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:19:44,560 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bcb45-9618-4579-aa8e-b25032ca3207/sv-benchmarks/c/bitvector/modulus-2.i [2021-10-11 00:19:44,568 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bcb45-9618-4579-aa8e-b25032ca3207/bin/uautomizer-Z5i5R5N3CC/data/61140b6e0/952d002fd1aa412aa44368946884a3d3/FLAG047da25b3 [2021-10-11 00:19:44,923 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bcb45-9618-4579-aa8e-b25032ca3207/bin/uautomizer-Z5i5R5N3CC/data/61140b6e0/952d002fd1aa412aa44368946884a3d3 [2021-10-11 00:19:44,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:19:44,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:19:44,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:19:44,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:19:44,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:19:44,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:19:44" (1/1) ... [2021-10-11 00:19:44,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c681538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:44, skipping insertion in model container [2021-10-11 00:19:44,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:19:44" (1/1) ... [2021-10-11 00:19:44,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:19:44,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:19:45,277 WARN L226 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_772bcb45-9618-4579-aa8e-b25032ca3207/sv-benchmarks/c/bitvector/modulus-2.i[947,960] [2021-10-11 00:19:45,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:19:45,307 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:19:45,329 WARN L226 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_772bcb45-9618-4579-aa8e-b25032ca3207/sv-benchmarks/c/bitvector/modulus-2.i[947,960] [2021-10-11 00:19:45,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:19:45,355 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:19:45,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:45 WrapperNode [2021-10-11 00:19:45,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:19:45,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:19:45,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:19:45,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:19:45,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:45" (1/1) ... [2021-10-11 00:19:45,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:45" (1/1) ... [2021-10-11 00:19:45,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:19:45,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:19:45,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:19:45,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:19:45,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:45" (1/1) ... [2021-10-11 00:19:45,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:45" (1/1) ... [2021-10-11 00:19:45,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:45" (1/1) ... [2021-10-11 00:19:45,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:45" (1/1) ... [2021-10-11 00:19:45,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:45" (1/1) ... [2021-10-11 00:19:45,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:45" (1/1) ... [2021-10-11 00:19:45,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:45" (1/1) ... [2021-10-11 00:19:45,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:19:45,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:19:45,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:19:45,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:19:45,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:45" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bcb45-9618-4579-aa8e-b25032ca3207/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:19:45,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:19:45,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:19:45,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:19:45,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:19:45,955 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:19:45,966 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 00:19:45,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:19:45 BoogieIcfgContainer [2021-10-11 00:19:45,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:19:45,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:19:45,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:19:45,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:19:45,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:19:44" (1/3) ... [2021-10-11 00:19:45,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29558c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:19:45, skipping insertion in model container [2021-10-11 00:19:45,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:19:45" (2/3) ... [2021-10-11 00:19:45,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29558c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:19:45, skipping insertion in model container [2021-10-11 00:19:45,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:19:45" (3/3) ... [2021-10-11 00:19:45,992 INFO L111 eAbstractionObserver]: Analyzing ICFG modulus-2.i [2021-10-11 00:19:46,032 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:19:46,036 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 00:19:46,063 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 00:19:46,112 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:19:46,113 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:19:46,113 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:19:46,113 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:19:46,113 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:19:46,128 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:19:46,129 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:19:46,129 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:19:46,152 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2021-10-11 00:19:46,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 00:19:46,157 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:19:46,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 00:19:46,158 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:19:46,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:19:46,164 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2021-10-11 00:19:46,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:19:46,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449534826] [2021-10-11 00:19:46,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:19:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:19:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:19:46,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449534826] [2021-10-11 00:19:46,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:19:46,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:19:46,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685683581] [2021-10-11 00:19:46,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:19:46,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:19:46,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:19:46,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:19:46,440 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2021-10-11 00:19:46,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:19:46,467 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2021-10-11 00:19:46,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:19:46,469 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2021-10-11 00:19:46,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:19:46,490 INFO L225 Difference]: With dead ends: 43 [2021-10-11 00:19:46,494 INFO L226 Difference]: Without dead ends: 11 [2021-10-11 00:19:46,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:19:46,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-11 00:19:46,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-11 00:19:46,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 00:19:46,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-10-11 00:19:46,537 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 4 [2021-10-11 00:19:46,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:19:46,539 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-10-11 00:19:46,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:19:46,539 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-10-11 00:19:46,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 00:19:46,540 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:19:46,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 00:19:46,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:19:46,543 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:19:46,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:19:46,547 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2021-10-11 00:19:46,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:19:46,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620431469] [2021-10-11 00:19:46,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:19:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:19:46,601 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:19:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:19:46,644 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:19:46,671 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:19:46,672 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:19:46,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:19:46,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:19:46 BoogieIcfgContainer [2021-10-11 00:19:46,706 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:19:46,708 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:19:46,708 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:19:46,708 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:19:46,710 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:19:45" (3/4) ... [2021-10-11 00:19:46,714 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 00:19:46,714 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:19:46,720 INFO L168 Benchmark]: Toolchain (without parser) took 1786.15 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 64.0 MB in the beginning and 99.5 MB in the end (delta: -35.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:19:46,722 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory was 52.7 MB in the beginning and 52.7 MB in the end (delta: 38.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:19:46,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.69 ms. Allocated memory is still 96.5 MB. Free memory was 63.8 MB in the beginning and 72.6 MB in the end (delta: -8.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:46,725 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.44 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 71.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:46,726 INFO L168 Benchmark]: Boogie Preprocessor took 30.57 ms. Allocated memory is still 96.5 MB. Free memory was 71.0 MB in the beginning and 69.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:46,728 INFO L168 Benchmark]: RCFGBuilder took 533.23 ms. Allocated memory is still 96.5 MB. Free memory was 69.8 MB in the beginning and 56.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:19:46,729 INFO L168 Benchmark]: TraceAbstraction took 723.36 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 56.3 MB in the beginning and 99.5 MB in the end (delta: -43.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:19:46,731 INFO L168 Benchmark]: Witness Printer took 6.72 ms. Allocated memory is still 130.0 MB. Free memory is still 99.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:19:46,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory was 52.7 MB in the beginning and 52.7 MB in the end (delta: 38.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 421.69 ms. Allocated memory is still 96.5 MB. Free memory was 63.8 MB in the beginning and 72.6 MB in the end (delta: -8.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.44 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 71.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.57 ms. Allocated memory is still 96.5 MB. Free memory was 71.0 MB in the beginning and 69.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 533.23 ms. Allocated memory is still 96.5 MB. Free memory was 69.8 MB in the beginning and 56.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 723.36 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 56.3 MB in the beginning and 99.5 MB in the end (delta: -43.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.72 ms. Allocated memory is still 130.0 MB. Free memory is still 99.5 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, 23 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...