./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/bitvector/modulus-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/modulus-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 eb583f0a2d9b17287e90d2d3ca4585c6ac92a616 ............................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 0.2.0-5485861 [2020-10-26 04:10:17,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:10:17,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:10:17,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:10:17,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:10:17,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:10:17,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:10:17,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:10:17,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:10:17,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:10:17,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:10:17,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:10:17,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:10:17,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:10:17,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:10:17,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:10:17,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:10:17,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:10:17,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:10:17,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:10:17,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:10:17,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:10:17,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:10:17,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:10:17,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:10:17,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:10:17,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:10:17,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:10:17,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:10:17,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:10:17,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:10:17,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:10:17,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:10:17,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:10:17,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:10:17,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:10:17,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:10:17,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:10:17,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:10:17,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:10:17,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:10:17,966 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-10-26 04:10:17,993 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:10:17,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:10:17,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:10:17,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:10:17,996 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:10:17,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:10:17,996 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 04:10:17,997 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:10:17,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:10:17,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 04:10:17,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:10:17,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 04:10:17,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 04:10:17,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 04:10:17,998 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-26 04:10:17,998 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 04:10:17,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:10:17,999 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:10:17,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 04:10:17,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:10:17,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:10:18,000 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 04:10:18,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 04:10:18,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 04:10:18,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:10:18,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 04:10:18,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 04:10:18,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:10:18,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 04:10:18,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 04:10:18,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:10:18,002 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb583f0a2d9b17287e90d2d3ca4585c6ac92a616 [2020-10-26 04:10:18,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:10:18,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:10:18,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:10:18,516 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:10:18,517 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:10:18,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/modulus-1.i [2020-10-26 04:10:18,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a518f3282/66bc569898e648029cbfb988dd2c3be4/FLAG53589b7c2 [2020-10-26 04:10:19,267 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:10:19,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/modulus-1.i [2020-10-26 04:10:19,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a518f3282/66bc569898e648029cbfb988dd2c3be4/FLAG53589b7c2 [2020-10-26 04:10:19,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a518f3282/66bc569898e648029cbfb988dd2c3be4 [2020-10-26 04:10:19,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:10:19,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:10:19,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:10:19,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:10:19,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:10:19,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:10:19" (1/1) ... [2020-10-26 04:10:19,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ab00d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:10:19, skipping insertion in model container [2020-10-26 04:10:19,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:10:19" (1/1) ... [2020-10-26 04:10:19,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:10:19,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:10:19,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:10:19,862 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:10:19,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:10:19,911 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:10:19,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:10:19 WrapperNode [2020-10-26 04:10:19,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:10:19,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:10:19,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:10:19,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:10:19,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:10:19" (1/1) ... [2020-10-26 04:10:19,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:10:19" (1/1) ... [2020-10-26 04:10:19,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:10:19,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:10:19,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:10:19,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:10:19,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:10:19" (1/1) ... [2020-10-26 04:10:19,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:10:19" (1/1) ... [2020-10-26 04:10:19,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:10:19" (1/1) ... [2020-10-26 04:10:19,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:10:19" (1/1) ... [2020-10-26 04:10:19,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:10:19" (1/1) ... [2020-10-26 04:10:19,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:10:19" (1/1) ... [2020-10-26 04:10:19,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:10:19" (1/1) ... [2020-10-26 04:10:19,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:10:19,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:10:19,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:10:19,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:10:19,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:10:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 04:10:20,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 04:10:20,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 04:10:20,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:10:20,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:10:20,358 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:10:20,358 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-26 04:10:20,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:10:20 BoogieIcfgContainer [2020-10-26 04:10:20,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:10:20,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 04:10:20,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 04:10:20,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 04:10:20,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 04:10:19" (1/3) ... [2020-10-26 04:10:20,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b0663a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:10:20, skipping insertion in model container [2020-10-26 04:10:20,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:10:19" (2/3) ... [2020-10-26 04:10:20,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b0663a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:10:20, skipping insertion in model container [2020-10-26 04:10:20,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:10:20" (3/3) ... [2020-10-26 04:10:20,388 INFO L111 eAbstractionObserver]: Analyzing ICFG modulus-1.i [2020-10-26 04:10:20,415 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 04:10:20,425 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-26 04:10:20,446 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 04:10:20,476 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 04:10:20,477 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 04:10:20,477 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 04:10:20,477 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:10:20,477 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:10:20,477 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 04:10:20,477 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:10:20,477 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 04:10:20,493 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-26 04:10:20,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-26 04:10:20,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:10:20,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-26 04:10:20,500 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:10:20,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:10:20,507 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2020-10-26 04:10:20,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:10:20,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83779998] [2020-10-26 04:10:20,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:10:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:10:20,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:10:20,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83779998] [2020-10-26 04:10:20,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:10:20,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:10:20,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175635568] [2020-10-26 04:10:20,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-26 04:10:20,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:10:20,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-26 04:10:20,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 04:10:20,700 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-10-26 04:10:20,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:10:20,725 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2020-10-26 04:10:20,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 04:10:20,727 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-10-26 04:10:20,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:10:20,736 INFO L225 Difference]: With dead ends: 46 [2020-10-26 04:10:20,736 INFO L226 Difference]: Without dead ends: 11 [2020-10-26 04:10:20,739 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 [2020-10-26 04:10:20,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-26 04:10:20,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-26 04:10:20,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-26 04:10:20,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-10-26 04:10:20,778 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 4 [2020-10-26 04:10:20,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:10:20,778 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-10-26 04:10:20,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-26 04:10:20,779 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-10-26 04:10:20,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-26 04:10:20,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:10:20,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-26 04:10:20,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 04:10:20,780 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:10:20,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:10:20,781 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2020-10-26 04:10:20,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:10:20,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824580572] [2020-10-26 04:10:20,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:10:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:10:20,819 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:10:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:10:20,841 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:10:20,865 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:10:20,865 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 04:10:20,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 04:10:20,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 04:10:20 BoogieIcfgContainer [2020-10-26 04:10:20,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 04:10:20,892 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:10:20,892 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:10:20,892 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:10:20,893 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:10:20" (3/4) ... [2020-10-26 04:10:20,897 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 04:10:20,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:10:20,901 INFO L168 Benchmark]: Toolchain (without parser) took 1283.12 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 20.2 MB in the beginning and 26.9 MB in the end (delta: -6.7 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:10:20,902 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 41.9 MB. Free memory was 22.8 MB in the beginning and 22.7 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:10:20,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.05 ms. Allocated memory is still 41.9 MB. Free memory was 19.5 MB in the beginning and 21.1 MB in the end (delta: -1.6 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:10:20,903 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.23 ms. Allocated memory is still 41.9 MB. Free memory was 21.0 MB in the beginning and 19.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:10:20,904 INFO L168 Benchmark]: Boogie Preprocessor took 25.60 ms. Allocated memory is still 41.9 MB. Free memory was 19.5 MB in the beginning and 18.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:10:20,906 INFO L168 Benchmark]: RCFGBuilder took 377.74 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.3 MB in the beginning and 35.1 MB in the end (delta: -16.8 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2020-10-26 04:10:20,907 INFO L168 Benchmark]: TraceAbstraction took 524.49 ms. Allocated memory is still 50.3 MB. Free memory was 34.7 MB in the beginning and 27.2 MB in the end (delta: 7.6 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2020-10-26 04:10:20,908 INFO L168 Benchmark]: Witness Printer took 5.62 ms. Allocated memory is still 50.3 MB. Free memory was 27.2 MB in the beginning and 26.9 MB in the end (delta: 247.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:10:20,921 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 41.9 MB. Free memory was 22.8 MB in the beginning and 22.7 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 283.05 ms. Allocated memory is still 41.9 MB. Free memory was 19.5 MB in the beginning and 21.1 MB in the end (delta: -1.6 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.23 ms. Allocated memory is still 41.9 MB. Free memory was 21.0 MB in the beginning and 19.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.60 ms. Allocated memory is still 41.9 MB. Free memory was 19.5 MB in the beginning and 18.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 377.74 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.3 MB in the beginning and 35.1 MB in the end (delta: -16.8 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 524.49 ms. Allocated memory is still 50.3 MB. Free memory was 34.7 MB in the beginning and 27.2 MB in the end (delta: 7.6 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.62 ms. Allocated memory is still 50.3 MB. Free memory was 27.2 MB in the beginning and 26.9 MB in the end (delta: 247.2 kB). 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, 25 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 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=25occurred 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...