./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_e3f7c739-4068-4182-a3db-91b3cfdef057/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e3f7c739-4068-4182-a3db-91b3cfdef057/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e3f7c739-4068-4182-a3db-91b3cfdef057/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e3f7c739-4068-4182-a3db-91b3cfdef057/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/modulus-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e3f7c739-4068-4182-a3db-91b3cfdef057/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e3f7c739-4068-4182-a3db-91b3cfdef057/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_e3f7c739-4068-4182-a3db-91b3cfdef057/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 [2020-11-30 02:01:53,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:01:53,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:01:53,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:01:53,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:01:53,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:01:53,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:01:53,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:01:53,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:01:53,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:01:53,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:01:53,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:01:53,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:01:53,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:01:53,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:01:53,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:01:53,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:01:53,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:01:53,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:01:53,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:01:53,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:01:53,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:01:53,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:01:53,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:01:53,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:01:53,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:01:53,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:01:53,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:01:53,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:01:53,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:01:53,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:01:53,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:01:53,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:01:53,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:01:53,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:01:53,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:01:53,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:01:53,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:01:53,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:01:53,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:01:53,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:01:53,738 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e3f7c739-4068-4182-a3db-91b3cfdef057/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-30 02:01:53,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:01:53,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:01:53,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:01:53,780 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:01:53,780 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:01:53,780 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:01:53,780 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:01:53,780 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:01:53,781 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:01:53,781 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:01:53,782 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:01:53,782 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:01:53,783 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:01:53,783 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:01:53,783 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:01:53,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:01:53,784 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:01:53,784 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:01:53,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:01:53,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:01:53,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:01:53,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:01:53,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:01:53,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:01:53,786 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 02:01:53,786 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:01:53,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:01:53,787 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:01:53,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:01:53,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:01:53,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:01:53,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:01:53,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:01:53,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:01:53,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:01:53,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:01:53,790 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:01:53,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:01:53,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:01:53,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:01:53,791 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:01:53,792 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_e3f7c739-4068-4182-a3db-91b3cfdef057/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e3f7c739-4068-4182-a3db-91b3cfdef057/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8679dad194af8e09f8dc0270d50ea9ce875abb3 [2020-11-30 02:01:54,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:01:54,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:01:54,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:01:54,115 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:01:54,115 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:01:54,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e3f7c739-4068-4182-a3db-91b3cfdef057/bin/utaipan/../../sv-benchmarks/c/bitvector/modulus-2.i [2020-11-30 02:01:54,189 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e3f7c739-4068-4182-a3db-91b3cfdef057/bin/utaipan/data/be0052f21/3f5b805cbe4a452086825ce4765e53db/FLAG15b3e25fc [2020-11-30 02:01:54,759 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:01:54,759 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e3f7c739-4068-4182-a3db-91b3cfdef057/sv-benchmarks/c/bitvector/modulus-2.i [2020-11-30 02:01:54,766 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e3f7c739-4068-4182-a3db-91b3cfdef057/bin/utaipan/data/be0052f21/3f5b805cbe4a452086825ce4765e53db/FLAG15b3e25fc [2020-11-30 02:01:55,105 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e3f7c739-4068-4182-a3db-91b3cfdef057/bin/utaipan/data/be0052f21/3f5b805cbe4a452086825ce4765e53db [2020-11-30 02:01:55,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:01:55,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:01:55,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:01:55,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:01:55,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:01:55,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:01:55" (1/1) ... [2020-11-30 02:01:55,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29206d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:55, skipping insertion in model container [2020-11-30 02:01:55,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:01:55" (1/1) ... [2020-11-30 02:01:55,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:01:55,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:01:55,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:01:55,380 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:01:55,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:01:55,428 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:01:55,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:55 WrapperNode [2020-11-30 02:01:55,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:01:55,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:01:55,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:01:55,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:01:55,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:55" (1/1) ... [2020-11-30 02:01:55,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:55" (1/1) ... [2020-11-30 02:01:55,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:01:55,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:01:55,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:01:55,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:01:55,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:55" (1/1) ... [2020-11-30 02:01:55,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:55" (1/1) ... [2020-11-30 02:01:55,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:55" (1/1) ... [2020-11-30 02:01:55,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:55" (1/1) ... [2020-11-30 02:01:55,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:55" (1/1) ... [2020-11-30 02:01:55,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:55" (1/1) ... [2020-11-30 02:01:55,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:55" (1/1) ... [2020-11-30 02:01:55,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:01:55,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:01:55,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:01:55,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:01:55,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e3f7c739-4068-4182-a3db-91b3cfdef057/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 [2020-11-30 02:01:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:01:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:01:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:01:55,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:01:56,073 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:01:56,073 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 02:01:56,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:01:56 BoogieIcfgContainer [2020-11-30 02:01:56,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:01:56,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:01:56,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:01:56,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:01:56,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:01:55" (1/3) ... [2020-11-30 02:01:56,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76fe80f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:01:56, skipping insertion in model container [2020-11-30 02:01:56,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:55" (2/3) ... [2020-11-30 02:01:56,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76fe80f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:01:56, skipping insertion in model container [2020-11-30 02:01:56,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:01:56" (3/3) ... [2020-11-30 02:01:56,085 INFO L111 eAbstractionObserver]: Analyzing ICFG modulus-2.i [2020-11-30 02:01:56,095 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:01:56,099 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-30 02:01:56,111 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 02:01:56,149 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:01:56,150 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:01:56,150 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:01:56,150 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:01:56,150 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:01:56,150 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:01:56,151 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:01:56,151 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:01:56,169 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-30 02:01:56,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-30 02:01:56,174 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:01:56,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-11-30 02:01:56,176 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:01:56,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:01:56,184 INFO L82 PathProgramCache]: Analyzing trace with hash 3667, now seen corresponding path program 1 times [2020-11-30 02:01:56,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:01:56,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185465631] [2020-11-30 02:01:56,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:01:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:01:56,323 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:01:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:01:56,344 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:01:56,391 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 02:01:56,392 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:01:56,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:01:56,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:01:56 BoogieIcfgContainer [2020-11-30 02:01:56,422 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:01:56,425 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:01:56,425 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:01:56,425 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:01:56,426 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:01:56" (3/4) ... [2020-11-30 02:01:56,429 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 02:01:56,430 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:01:56,436 INFO L168 Benchmark]: Toolchain (without parser) took 1322.48 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 50.9 MB in the beginning and 83.9 MB in the end (delta: -32.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:01:56,436 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 88.1 MB. Free memory is still 67.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:01:56,441 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.19 ms. Allocated memory is still 88.1 MB. Free memory was 50.7 MB in the beginning and 65.5 MB in the end (delta: -14.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:01:56,443 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.87 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 63.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:01:56,444 INFO L168 Benchmark]: Boogie Preprocessor took 24.73 ms. Allocated memory is still 88.1 MB. Free memory was 63.9 MB in the beginning and 62.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:01:56,445 INFO L168 Benchmark]: RCFGBuilder took 583.37 ms. Allocated memory is still 88.1 MB. Free memory was 62.7 MB in the beginning and 41.8 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:01:56,446 INFO L168 Benchmark]: TraceAbstraction took 344.81 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 41.3 MB in the beginning and 84.2 MB in the end (delta: -42.9 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:01:56,447 INFO L168 Benchmark]: Witness Printer took 5.87 ms. Allocated memory is still 107.0 MB. Free memory was 84.2 MB in the beginning and 83.9 MB in the end (delta: 320.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:01:56,461 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 88.1 MB. Free memory is still 67.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.19 ms. Allocated memory is still 88.1 MB. Free memory was 50.7 MB in the beginning and 65.5 MB in the end (delta: -14.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.87 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 63.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.73 ms. Allocated memory is still 88.1 MB. Free memory was 63.9 MB in the beginning and 62.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 583.37 ms. Allocated memory is still 88.1 MB. Free memory was 62.7 MB in the beginning and 41.8 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 344.81 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 41.3 MB in the beginning and 84.2 MB in the end (delta: -42.9 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.87 ms. Allocated memory is still 107.0 MB. Free memory was 84.2 MB in the beginning and 83.9 MB in the end (delta: 320.9 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, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, 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...