./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0d786256-9264-4be5-bd4b-aeb1c595e58b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0d786256-9264-4be5-bd4b-aeb1c595e58b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0d786256-9264-4be5-bd4b-aeb1c595e58b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0d786256-9264-4be5-bd4b-aeb1c595e58b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/modulus-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0d786256-9264-4be5-bd4b-aeb1c595e58b/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0d786256-9264-4be5-bd4b-aeb1c595e58b/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 c028dc478ad08c52f1db2e76a15a3094442b18a8 ........................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_0d786256-9264-4be5-bd4b-aeb1c595e58b/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-cad4683 [2019-11-15 20:21:38,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:21:38,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:21:38,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:21:38,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:21:38,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:21:38,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:21:38,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:21:38,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:21:38,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:21:38,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:21:38,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:21:38,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:21:38,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:21:38,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:21:38,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:21:38,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:21:38,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:21:38,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:21:38,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:21:38,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:21:38,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:21:38,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:21:38,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:21:38,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:21:38,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:21:38,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:21:38,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:21:38,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:21:38,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:21:38,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:21:38,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:21:38,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:21:38,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:21:38,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:21:38,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:21:38,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:21:38,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:21:38,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:21:38,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:21:38,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:21:38,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0d786256-9264-4be5-bd4b-aeb1c595e58b/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-11-15 20:21:38,679 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:21:38,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:21:38,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:21:38,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:21:38,690 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:21:38,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:21:38,691 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 20:21:38,691 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 20:21:38,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:21:38,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 20:21:38,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:21:38,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 20:21:38,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 20:21:38,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 20:21:38,693 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-15 20:21:38,694 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 20:21:38,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 20:21:38,694 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:21:38,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 20:21:38,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:21:38,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:21:38,695 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 20:21:38,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 20:21:38,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:21:38,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:21:38,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 20:21:38,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 20:21:38,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 20:21:38,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 20:21:38,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 20:21:38,697 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_0d786256-9264-4be5-bd4b-aeb1c595e58b/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 -> c028dc478ad08c52f1db2e76a15a3094442b18a8 [2019-11-15 20:21:38,726 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:21:38,734 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:21:38,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:21:38,739 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:21:38,741 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:21:38,741 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0d786256-9264-4be5-bd4b-aeb1c595e58b/bin/uautomizer/../../sv-benchmarks/c/bitvector/modulus-2.i [2019-11-15 20:21:38,816 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0d786256-9264-4be5-bd4b-aeb1c595e58b/bin/uautomizer/data/a1997c758/d4fa03487ed14c6c826551ce56f638b9/FLAG65e0c7cea [2019-11-15 20:21:39,174 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:21:39,174 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0d786256-9264-4be5-bd4b-aeb1c595e58b/sv-benchmarks/c/bitvector/modulus-2.i [2019-11-15 20:21:39,180 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0d786256-9264-4be5-bd4b-aeb1c595e58b/bin/uautomizer/data/a1997c758/d4fa03487ed14c6c826551ce56f638b9/FLAG65e0c7cea [2019-11-15 20:21:39,543 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0d786256-9264-4be5-bd4b-aeb1c595e58b/bin/uautomizer/data/a1997c758/d4fa03487ed14c6c826551ce56f638b9 [2019-11-15 20:21:39,546 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:21:39,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 20:21:39,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:21:39,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:21:39,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:21:39,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:21:39" (1/1) ... [2019-11-15 20:21:39,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5390f377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:21:39, skipping insertion in model container [2019-11-15 20:21:39,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:21:39" (1/1) ... [2019-11-15 20:21:39,567 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:21:39,585 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:21:39,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:21:39,874 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:21:39,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:21:39,913 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:21:39,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:21:39 WrapperNode [2019-11-15 20:21:39,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:21:39,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 20:21:39,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 20:21:39,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 20:21:39,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:21:39" (1/1) ... [2019-11-15 20:21:39,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:21:39" (1/1) ... [2019-11-15 20:21:39,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 20:21:39,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:21:39,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:21:39,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:21:39,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:21:39" (1/1) ... [2019-11-15 20:21:39,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:21:39" (1/1) ... [2019-11-15 20:21:39,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:21:39" (1/1) ... [2019-11-15 20:21:39,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:21:39" (1/1) ... [2019-11-15 20:21:39,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:21:39" (1/1) ... [2019-11-15 20:21:39,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:21:39" (1/1) ... [2019-11-15 20:21:39,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:21:39" (1/1) ... [2019-11-15 20:21:39,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:21:39,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:21:39,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:21:39,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:21:39,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:21:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d786256-9264-4be5-bd4b-aeb1c595e58b/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 [2019-11-15 20:21:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:21:40,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:21:40,210 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:21:40,210 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-15 20:21:40,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:21:40 BoogieIcfgContainer [2019-11-15 20:21:40,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:21:40,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 20:21:40,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 20:21:40,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 20:21:40,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 08:21:39" (1/3) ... [2019-11-15 20:21:40,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75036ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:21:40, skipping insertion in model container [2019-11-15 20:21:40,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:21:39" (2/3) ... [2019-11-15 20:21:40,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75036ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:21:40, skipping insertion in model container [2019-11-15 20:21:40,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:21:40" (3/3) ... [2019-11-15 20:21:40,218 INFO L109 eAbstractionObserver]: Analyzing ICFG modulus-2.i [2019-11-15 20:21:40,237 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 20:21:40,243 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-15 20:21:40,267 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-15 20:21:40,287 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 20:21:40,287 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 20:21:40,287 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 20:21:40,287 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:21:40,287 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:21:40,287 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 20:21:40,288 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:21:40,288 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 20:21:40,301 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-15 20:21:40,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-11-15 20:21:40,305 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:21:40,306 INFO L380 BasicCegarLoop]: trace histogram [1, 1] [2019-11-15 20:21:40,308 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 20:21:40,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:21:40,313 INFO L82 PathProgramCache]: Analyzing trace with hash 994, now seen corresponding path program 1 times [2019-11-15 20:21:40,320 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:21:40,321 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240208412] [2019-11-15 20:21:40,321 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:21:40,321 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:21:40,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:21:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:21:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:21:40,423 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:21:40,423 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 20:21:40,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 08:21:40 BoogieIcfgContainer [2019-11-15 20:21:40,435 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 20:21:40,436 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 20:21:40,436 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 20:21:40,436 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 20:21:40,437 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:21:40" (3/4) ... [2019-11-15 20:21:40,440 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 20:21:40,440 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 20:21:40,443 INFO L168 Benchmark]: Toolchain (without parser) took 894.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -154.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:21:40,443 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:21:40,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -187.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-15 20:21:40,445 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.27 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. [2019-11-15 20:21:40,445 INFO L168 Benchmark]: Boogie Preprocessor took 23.41 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 20:21:40,446 INFO L168 Benchmark]: RCFGBuilder took 239.07 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-15 20:21:40,447 INFO L168 Benchmark]: TraceAbstraction took 223.38 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-15 20:21:40,447 INFO L168 Benchmark]: Witness Printer took 4.57 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. [2019-11-15 20:21:40,450 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 362.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -187.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.27 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 23.41 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 239.07 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 223.38 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.57 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: 29]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of shiftLeft at line 29. Possible FailurePath: [L24] unsigned int n = __VERIFIER_nondet_uint(); [L25] unsigned int s = __VERIFIER_nondet_uint(); [L26] unsigned int d; [L27] unsigned int m; [L29] 1 << s - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 4 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=21occurred 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, 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...