./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb63ba8209b4429912d8171cad5a1e8773f9c13b ..................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb63ba8209b4429912d8171cad5a1e8773f9c13b ................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:20:25,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:20:25,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:20:25,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:20:25,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:20:25,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:20:25,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:20:25,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:20:25,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:20:25,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:20:25,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:20:25,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:20:25,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:20:25,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:20:25,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:20:25,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:20:25,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:20:25,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:20:25,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:20:25,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:20:25,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:20:25,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:20:25,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:20:25,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:20:25,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:20:25,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:20:25,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:20:25,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:20:25,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:20:25,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:20:25,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:20:25,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:20:25,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:20:25,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:20:25,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:20:25,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:20:25,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:20:25,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:20:25,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:20:25,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:20:25,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:20:25,209 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:20:25,247 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:20:25,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:20:25,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:20:25,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:20:25,252 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:20:25,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:20:25,253 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:20:25,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:20:25,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:20:25,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:20:25,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:20:25,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:20:25,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:20:25,256 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:20:25,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:20:25,257 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:20:25,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:20:25,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:20:25,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:20:25,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:20:25,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:20:25,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:20:25,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:20:25,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:20:25,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:20:25,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:20:25,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:20:25,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:20:25,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:20:25,262 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) 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 -> eb63ba8209b4429912d8171cad5a1e8773f9c13b [2020-07-28 17:20:25,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:20:25,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:20:25,591 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:20:25,593 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:20:25,596 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:20:25,596 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c [2020-07-28 17:20:25,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/515dd42a7/a6c4b56b8f8b4e26abdf4f4faed613b5/FLAG19ef270ff [2020-07-28 17:20:26,084 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:20:26,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c [2020-07-28 17:20:26,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/515dd42a7/a6c4b56b8f8b4e26abdf4f4faed613b5/FLAG19ef270ff [2020-07-28 17:20:26,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/515dd42a7/a6c4b56b8f8b4e26abdf4f4faed613b5 [2020-07-28 17:20:26,476 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:20:26,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:20:26,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:20:26,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:20:26,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:20:26,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:20:26" (1/1) ... [2020-07-28 17:20:26,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245b50b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:26, skipping insertion in model container [2020-07-28 17:20:26,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:20:26" (1/1) ... [2020-07-28 17:20:26,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:20:26,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:20:26,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:20:26,695 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:20:26,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:20:26,726 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:20:26,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:26 WrapperNode [2020-07-28 17:20:26,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:20:26,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:20:26,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:20:26,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:20:26,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:26" (1/1) ... [2020-07-28 17:20:26,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:26" (1/1) ... [2020-07-28 17:20:26,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:20:26,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:20:26,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:20:26,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:20:26,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:26" (1/1) ... [2020-07-28 17:20:26,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:26" (1/1) ... [2020-07-28 17:20:26,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:26" (1/1) ... [2020-07-28 17:20:26,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:26" (1/1) ... [2020-07-28 17:20:26,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:26" (1/1) ... [2020-07-28 17:20:26,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:26" (1/1) ... [2020-07-28 17:20:26,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:26" (1/1) ... [2020-07-28 17:20:26,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:20:26,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:20:26,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:20:26,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:20:26,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:20:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:20:26,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:20:27,135 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:20:27,137 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-28 17:20:27,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:20:27 BoogieIcfgContainer [2020-07-28 17:20:27,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:20:27,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:20:27,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:20:27,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:20:27,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:20:26" (1/3) ... [2020-07-28 17:20:27,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a80bb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:20:27, skipping insertion in model container [2020-07-28 17:20:27,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:26" (2/3) ... [2020-07-28 17:20:27,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a80bb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:20:27, skipping insertion in model container [2020-07-28 17:20:27,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:20:27" (3/3) ... [2020-07-28 17:20:27,154 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp3.c [2020-07-28 17:20:27,164 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:20:27,171 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:20:27,184 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:20:27,206 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:20:27,207 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:20:27,207 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:20:27,207 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:20:27,208 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:20:27,208 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:20:27,208 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:20:27,208 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:20:27,222 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-07-28 17:20:27,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-07-28 17:20:27,228 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:20:27,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-07-28 17:20:27,230 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:20:27,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:20:27,237 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2020-07-28 17:20:27,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:20:27,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282182542] [2020-07-28 17:20:27,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:20:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:20:27,331 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:20:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:20:27,334 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:20:27,354 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 17:20:27,355 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:20:27,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:20:27,372 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:20:27,373 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-28 17:20:27,373 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-28 17:20:27,373 WARN L170 areAnnotationChecker]: L8-1 has no Hoare annotation [2020-07-28 17:20:27,373 WARN L170 areAnnotationChecker]: L8-1 has no Hoare annotation [2020-07-28 17:20:27,373 WARN L170 areAnnotationChecker]: L3 has no Hoare annotation [2020-07-28 17:20:27,374 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:20:27,374 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:20:27,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:20:27 BoogieIcfgContainer [2020-07-28 17:20:27,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:20:27,377 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:20:27,378 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:20:27,378 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:20:27,379 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:20:27" (3/4) ... [2020-07-28 17:20:27,382 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-28 17:20:27,382 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:20:27,386 INFO L168 Benchmark]: Toolchain (without parser) took 907.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -148.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:20:27,387 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:20:27,388 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.35 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:27,389 INFO L168 Benchmark]: Boogie Procedure Inliner took 132.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -193.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:27,390 INFO L168 Benchmark]: Boogie Preprocessor took 22.44 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. [2020-07-28 17:20:27,391 INFO L168 Benchmark]: RCFGBuilder took 257.66 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: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:27,392 INFO L168 Benchmark]: TraceAbstraction took 234.15 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:27,392 INFO L168 Benchmark]: Witness Printer took 5.26 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. [2020-07-28 17:20:27,397 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 248.35 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 132.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -193.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.44 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 257.66 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: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 234.15 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.26 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: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 8, overapproximation of someBinaryArithmeticFLOAToperation at line 6. Possible FailurePath: [L6] float fs1=2.0f/6.0f; [L7] float fs2=fs1*6.0f; [L8] COND TRUE !((int)fs2==2) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, 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=7occurred 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, 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... ### Bit-precise run ### This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:20:29,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:20:29,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:20:29,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:20:29,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:20:29,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:20:29,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:20:29,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:20:29,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:20:29,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:20:29,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:20:29,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:20:29,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:20:29,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:20:29,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:20:29,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:20:29,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:20:29,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:20:29,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:20:29,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:20:29,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:20:29,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:20:29,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:20:29,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:20:29,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:20:29,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:20:29,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:20:29,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:20:29,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:20:29,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:20:29,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:20:29,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:20:29,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:20:29,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:20:29,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:20:29,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:20:29,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:20:29,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:20:29,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:20:29,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:20:29,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:20:29,434 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 17:20:29,475 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:20:29,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:20:29,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:20:29,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:20:29,479 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:20:29,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:20:29,480 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:20:29,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:20:29,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:20:29,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:20:29,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:20:29,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:20:29,482 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 17:20:29,482 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 17:20:29,482 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:20:29,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:20:29,483 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:20:29,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:20:29,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:20:29,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:20:29,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:20:29,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:20:29,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:20:29,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:20:29,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:20:29,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:20:29,485 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 17:20:29,486 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 17:20:29,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:20:29,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:20:29,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 17:20:29,487 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) 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 -> eb63ba8209b4429912d8171cad5a1e8773f9c13b [2020-07-28 17:20:29,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:20:29,798 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:20:29,801 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:20:29,803 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:20:29,804 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:20:29,804 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c [2020-07-28 17:20:29,865 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5800d7c39/7367bbf8836647fe98477ec14355d9f8/FLAG020a3a228 [2020-07-28 17:20:30,304 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:20:30,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c [2020-07-28 17:20:30,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5800d7c39/7367bbf8836647fe98477ec14355d9f8/FLAG020a3a228 [2020-07-28 17:20:30,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5800d7c39/7367bbf8836647fe98477ec14355d9f8 [2020-07-28 17:20:30,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:20:30,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:20:30,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:20:30,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:20:30,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:20:30,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:20:30" (1/1) ... [2020-07-28 17:20:30,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60cce22d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:30, skipping insertion in model container [2020-07-28 17:20:30,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:20:30" (1/1) ... [2020-07-28 17:20:30,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:20:30,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:20:30,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:20:30,892 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:20:30,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:20:30,925 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:20:30,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:30 WrapperNode [2020-07-28 17:20:30,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:20:30,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:20:30,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:20:30,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:20:30,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:30" (1/1) ... [2020-07-28 17:20:30,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:30" (1/1) ... [2020-07-28 17:20:31,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:20:31,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:20:31,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:20:31,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:20:31,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:30" (1/1) ... [2020-07-28 17:20:31,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:30" (1/1) ... [2020-07-28 17:20:31,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:30" (1/1) ... [2020-07-28 17:20:31,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:30" (1/1) ... [2020-07-28 17:20:31,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:30" (1/1) ... [2020-07-28 17:20:31,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:30" (1/1) ... [2020-07-28 17:20:31,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:30" (1/1) ... [2020-07-28 17:20:31,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:20:31,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:20:31,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:20:31,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:20:31,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:20:31,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:20:31,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:20:31,290 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:20:31,290 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-28 17:20:31,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:20:31 BoogieIcfgContainer [2020-07-28 17:20:31,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:20:31,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:20:31,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:20:31,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:20:31,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:20:30" (1/3) ... [2020-07-28 17:20:31,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b6846e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:20:31, skipping insertion in model container [2020-07-28 17:20:31,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:30" (2/3) ... [2020-07-28 17:20:31,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b6846e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:20:31, skipping insertion in model container [2020-07-28 17:20:31,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:20:31" (3/3) ... [2020-07-28 17:20:31,301 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp3.c [2020-07-28 17:20:31,310 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:20:31,316 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:20:31,329 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:20:31,353 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:20:31,353 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:20:31,353 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:20:31,353 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:20:31,353 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:20:31,353 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:20:31,354 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:20:31,354 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:20:31,365 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2020-07-28 17:20:31,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-28 17:20:31,371 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:20:31,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-28 17:20:31,372 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:20:31,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:20:31,378 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-07-28 17:20:31,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:20:31,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398164101] [2020-07-28 17:20:31,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-07-28 17:20:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:20:31,506 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-28 17:20:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:20:31,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:20:31,614 INFO L280 TraceCheckUtils]: 0: Hoare triple {11#true} currentRoundingMode := ~roundNearestTiesToEven; {16#(= currentRoundingMode roundNearestTiesToEven)} is VALID [2020-07-28 17:20:31,616 INFO L280 TraceCheckUtils]: 1: Hoare triple {16#(= currentRoundingMode roundNearestTiesToEven)} havoc main_#res;havoc main_~fs1~0, main_~fs2~0;main_~fs1~0 := ~fp.div~FLOAT(currentRoundingMode, ~to_fp~FLOAT(currentRoundingMode, 2.0), ~to_fp~FLOAT(currentRoundingMode, 6.0));main_~fs2~0 := ~fp.mul~FLOAT(currentRoundingMode, main_~fs1~0, ~to_fp~FLOAT(currentRoundingMode, 6.0)); {20#(= ULTIMATE.start_main_~fs2~0 (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven 2.0) ((_ to_fp 8 24) roundNearestTiesToEven 6.0)) ((_ to_fp 8 24) roundNearestTiesToEven 6.0)))} is VALID [2020-07-28 17:20:31,618 INFO L280 TraceCheckUtils]: 2: Hoare triple {20#(= ULTIMATE.start_main_~fs2~0 (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven 2.0) ((_ to_fp 8 24) roundNearestTiesToEven 6.0)) ((_ to_fp 8 24) roundNearestTiesToEven 6.0)))} assume !(2bv32 == ~convertFLOATToINT(~roundTowardZero, main_~fs2~0)); {12#false} is VALID [2020-07-28 17:20:31,618 INFO L280 TraceCheckUtils]: 3: Hoare triple {12#false} assume !false; {12#false} is VALID [2020-07-28 17:20:31,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:20:31,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:20:32,217 INFO L280 TraceCheckUtils]: 3: Hoare triple {12#false} assume !false; {12#false} is VALID [2020-07-28 17:20:32,218 INFO L280 TraceCheckUtils]: 2: Hoare triple {30#(= (bvadd ((_ fp.to_sbv 32) roundTowardZero ULTIMATE.start_main_~fs2~0) (_ bv4294967294 32)) (_ bv0 32))} assume !(2bv32 == ~convertFLOATToINT(~roundTowardZero, main_~fs2~0)); {12#false} is VALID [2020-07-28 17:20:32,227 INFO L280 TraceCheckUtils]: 1: Hoare triple {34#(= (_ bv2 32) ((_ fp.to_sbv 32) roundTowardZero (fp.mul currentRoundingMode (fp.div currentRoundingMode ((_ to_fp 8 24) currentRoundingMode 2.0) ((_ to_fp 8 24) currentRoundingMode 6.0)) ((_ to_fp 8 24) currentRoundingMode 6.0))))} havoc main_#res;havoc main_~fs1~0, main_~fs2~0;main_~fs1~0 := ~fp.div~FLOAT(currentRoundingMode, ~to_fp~FLOAT(currentRoundingMode, 2.0), ~to_fp~FLOAT(currentRoundingMode, 6.0));main_~fs2~0 := ~fp.mul~FLOAT(currentRoundingMode, main_~fs1~0, ~to_fp~FLOAT(currentRoundingMode, 6.0)); {30#(= (bvadd ((_ fp.to_sbv 32) roundTowardZero ULTIMATE.start_main_~fs2~0) (_ bv4294967294 32)) (_ bv0 32))} is VALID [2020-07-28 17:20:32,229 INFO L280 TraceCheckUtils]: 0: Hoare triple {11#true} currentRoundingMode := ~roundNearestTiesToEven; {34#(= (_ bv2 32) ((_ fp.to_sbv 32) roundTowardZero (fp.mul currentRoundingMode (fp.div currentRoundingMode ((_ to_fp 8 24) currentRoundingMode 2.0) ((_ to_fp 8 24) currentRoundingMode 6.0)) ((_ to_fp 8 24) currentRoundingMode 6.0))))} is VALID [2020-07-28 17:20:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:20:32,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398164101] [2020-07-28 17:20:32,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:20:32,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-07-28 17:20:32,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604398328] [2020-07-28 17:20:32,240 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2020-07-28 17:20:32,241 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:20:32,244 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-28 17:20:32,325 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:20:32,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-28 17:20:32,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:20:32,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-28 17:20:32,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-28 17:20:32,339 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 6 states. [2020-07-28 17:20:32,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:20:32,442 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-07-28 17:20:32,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 17:20:32,443 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2020-07-28 17:20:32,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:20:32,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-28 17:20:32,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-07-28 17:20:32,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-28 17:20:32,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-07-28 17:20:32,461 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 10 transitions. [2020-07-28 17:20:32,543 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:20:32,549 INFO L225 Difference]: With dead ends: 11 [2020-07-28 17:20:32,549 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 17:20:32,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-28 17:20:32,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 17:20:32,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 17:20:32,571 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:20:32,571 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 17:20:32,572 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:20:32,572 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:20:32,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:20:32,573 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:20:32,573 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:20:32,573 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:20:32,573 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:20:32,574 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:20:32,574 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:20:32,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:20:32,574 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:20:32,574 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:20:32,575 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:20:32,575 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:20:32,575 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:20:32,575 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:20:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 17:20:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 17:20:32,577 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-07-28 17:20:32,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:20:32,577 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 17:20:32,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-28 17:20:32,578 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:20:32,578 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:20:32,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 17:20:32,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 17:20:32,798 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 17:20:32,798 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-28 17:20:32,798 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 17:20:32,798 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 17:20:32,799 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-28 17:20:32,799 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-28 17:20:32,799 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-07-28 17:20:32,799 INFO L268 CegarLoopResult]: For program point L3(lines 3 9) no Hoare annotation was computed. [2020-07-28 17:20:32,803 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:20:32,804 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:20:32,804 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-28 17:20:32,804 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-28 17:20:32,804 WARN L170 areAnnotationChecker]: L8-1 has no Hoare annotation [2020-07-28 17:20:32,804 WARN L170 areAnnotationChecker]: L8-1 has no Hoare annotation [2020-07-28 17:20:32,805 WARN L170 areAnnotationChecker]: L3 has no Hoare annotation [2020-07-28 17:20:32,805 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:20:32,805 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:20:32,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:20:32 BoogieIcfgContainer [2020-07-28 17:20:32,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:20:32,808 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:20:32,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:20:32,808 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:20:32,809 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:20:31" (3/4) ... [2020-07-28 17:20:32,813 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 17:20:32,831 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-07-28 17:20:32,832 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-07-28 17:20:32,832 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-28 17:20:32,867 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:20:32,868 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:20:32,871 INFO L168 Benchmark]: Toolchain (without parser) took 2179.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 962.9 MB in the beginning and 1.0 GB in the end (delta: -61.0 MB). Peak memory consumption was 40.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:32,871 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:20:32,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.11 ms. Allocated memory is still 1.0 GB. Free memory was 962.9 MB in the beginning and 950.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:32,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.13 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -146.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:32,874 INFO L168 Benchmark]: Boogie Preprocessor took 25.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:32,875 INFO L168 Benchmark]: RCFGBuilder took 249.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:32,876 INFO L168 Benchmark]: TraceAbstraction took 1513.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:32,876 INFO L168 Benchmark]: Witness Printer took 59.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:32,881 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 229.11 ms. Allocated memory is still 1.0 GB. Free memory was 962.9 MB in the beginning and 950.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 91.13 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -146.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 249.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1513.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 11.5 GB. * Witness Printer took 59.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 SDtfs, 7 SDslu, 2 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 132 SizeOfPredicates, 3 NumberOfNonLiveVariables, 7 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 proved your program to be correct! Received shutdown request...