./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/num_conversion_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_67d007aa-4d64-47e4-8d78-d1a659078144/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_67d007aa-4d64-47e4-8d78-d1a659078144/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_67d007aa-4d64-47e4-8d78-d1a659078144/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_67d007aa-4d64-47e4-8d78-d1a659078144/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_67d007aa-4d64-47e4-8d78-d1a659078144/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_67d007aa-4d64-47e4-8d78-d1a659078144/bin/uautomizer --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 ff582c9ab67a3c5a19efc8f09de08768907e1ba6 ........................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_67d007aa-4d64-47e4-8d78-d1a659078144/bin/uautomizer/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 0.1.24-6b5699a [2019-11-25 08:54:50,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:54:50,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:54:50,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:54:50,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:54:50,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:54:50,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:54:50,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:54:50,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:54:50,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:54:50,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:54:50,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:54:50,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:54:50,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:54:50,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:54:50,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:54:50,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:54:50,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:54:50,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:54:50,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:54:50,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:54:50,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:54:50,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:54:50,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:54:50,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:54:50,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:54:50,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:54:50,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:54:50,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:54:50,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:54:50,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:54:50,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:54:50,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:54:50,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:54:50,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:54:50,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:54:50,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:54:50,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:54:50,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:54:50,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:54:50,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:54:50,164 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_67d007aa-4d64-47e4-8d78-d1a659078144/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-11-25 08:54:50,188 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:54:50,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:54:50,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:54:50,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:54:50,199 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:54:50,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:54:50,200 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:54:50,200 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:54:50,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:54:50,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:54:50,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:54:50,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:54:50,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:54:50,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:54:50,201 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-25 08:54:50,202 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:54:50,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:54:50,203 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:54:50,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:54:50,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:54:50,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:54:50,204 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:54:50,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:54:50,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:54:50,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:54:50,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:54:50,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:54:50,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:54:50,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:54:50,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:54:50,206 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_67d007aa-4d64-47e4-8d78-d1a659078144/bin/uautomizer 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 -> ff582c9ab67a3c5a19efc8f09de08768907e1ba6 [2019-11-25 08:54:50,382 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:54:50,398 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:54:50,401 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:54:50,402 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:54:50,403 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:54:50,404 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_67d007aa-4d64-47e4-8d78-d1a659078144/bin/uautomizer/../../sv-benchmarks/c/bitvector/num_conversion_2.c [2019-11-25 08:54:50,466 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67d007aa-4d64-47e4-8d78-d1a659078144/bin/uautomizer/data/0d54c9a31/78a3995a8bb048f0957bc6357b9a2186/FLAGc11981988 [2019-11-25 08:54:50,853 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:54:50,853 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_67d007aa-4d64-47e4-8d78-d1a659078144/sv-benchmarks/c/bitvector/num_conversion_2.c [2019-11-25 08:54:50,859 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67d007aa-4d64-47e4-8d78-d1a659078144/bin/uautomizer/data/0d54c9a31/78a3995a8bb048f0957bc6357b9a2186/FLAGc11981988 [2019-11-25 08:54:51,275 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_67d007aa-4d64-47e4-8d78-d1a659078144/bin/uautomizer/data/0d54c9a31/78a3995a8bb048f0957bc6357b9a2186 [2019-11-25 08:54:51,277 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:54:51,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:54:51,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:51,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:54:51,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:54:51,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:54:51" (1/1) ... [2019-11-25 08:54:51,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48771abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:51, skipping insertion in model container [2019-11-25 08:54:51,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:54:51" (1/1) ... [2019-11-25 08:54:51,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:54:51,309 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:54:51,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:51,607 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:54:51,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:51,640 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:54:51,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:51 WrapperNode [2019-11-25 08:54:51,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:51,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:54:51,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:54:51,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:54:51,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:51" (1/1) ... [2019-11-25 08:54:51,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:51" (1/1) ... [2019-11-25 08:54:51,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:54:51,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:54:51,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:54:51,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:54:51,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:51" (1/1) ... [2019-11-25 08:54:51,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:51" (1/1) ... [2019-11-25 08:54:51,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:51" (1/1) ... [2019-11-25 08:54:51,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:51" (1/1) ... [2019-11-25 08:54:51,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:51" (1/1) ... [2019-11-25 08:54:51,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:51" (1/1) ... [2019-11-25 08:54:51,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:51" (1/1) ... [2019-11-25 08:54:51,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:54:51,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:54:51,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:54:51,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:54:51,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67d007aa-4d64-47e4-8d78-d1a659078144/bin/uautomizer/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 [2019-11-25 08:54:51,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:54:51,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:54:51,989 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:54:51,989 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-25 08:54:51,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:51 BoogieIcfgContainer [2019-11-25 08:54:51,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:54:51,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:54:51,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:54:51,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:54:51,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:54:51" (1/3) ... [2019-11-25 08:54:51,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64dd9278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:54:51, skipping insertion in model container [2019-11-25 08:54:51,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:51" (2/3) ... [2019-11-25 08:54:51,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64dd9278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:54:51, skipping insertion in model container [2019-11-25 08:54:51,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:51" (3/3) ... [2019-11-25 08:54:51,998 INFO L109 eAbstractionObserver]: Analyzing ICFG num_conversion_2.c [2019-11-25 08:54:52,007 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:54:52,013 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-25 08:54:52,024 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-25 08:54:52,045 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:54:52,046 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:54:52,046 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:54:52,046 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:54:52,046 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:54:52,046 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:54:52,046 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:54:52,047 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:54:52,060 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-11-25 08:54:52,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-25 08:54:52,065 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:52,065 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-25 08:54:52,066 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:54:52,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:52,070 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-11-25 08:54:52,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:52,077 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932843416] [2019-11-25 08:54:52,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:52,166 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:52,167 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:54:52,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:54:52 BoogieIcfgContainer [2019-11-25 08:54:52,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:54:52,181 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:54:52,181 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:54:52,181 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:54:52,182 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:51" (3/4) ... [2019-11-25 08:54:52,185 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:54:52,185 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:54:52,187 INFO L168 Benchmark]: Toolchain (without parser) took 908.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -143.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:54:52,188 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:54:52,189 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -175.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:52,189 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:54:52,190 INFO L168 Benchmark]: Boogie Preprocessor took 31.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:54:52,190 INFO L168 Benchmark]: RCFGBuilder took 277.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:52,191 INFO L168 Benchmark]: TraceAbstraction took 189.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:52,191 INFO L168 Benchmark]: Witness Printer took 4.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:54:52,194 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 362.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -175.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 277.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 189.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. * Witness Printer took 4.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 21]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of shiftLeft at line 21. Possible FailurePath: [L14] unsigned char x = __VERIFIER_nondet_uchar(); [L15] unsigned char y; [L16] unsigned char c; [L18] y = 0 [L19] c = 0 [L20] COND TRUE c < (unsigned char)8 [L21] ((unsigned char)1) << c - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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...