./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i -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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash debea56186ef4ab268c0be4274b8e0822edc1b01 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i -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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash debea56186ef4ab268c0be4274b8e0822edc1b01 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 00:07:13,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 00:07:13,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 00:07:13,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 00:07:14,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 00:07:14,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 00:07:14,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 00:07:14,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 00:07:14,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 00:07:14,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 00:07:14,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 00:07:14,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 00:07:14,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 00:07:14,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 00:07:14,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 00:07:14,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 00:07:14,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 00:07:14,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 00:07:14,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 00:07:14,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 00:07:14,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 00:07:14,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 00:07:14,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 00:07:14,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 00:07:14,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 00:07:14,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 00:07:14,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 00:07:14,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 00:07:14,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 00:07:14,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 00:07:14,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 00:07:14,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 00:07:14,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 00:07:14,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 00:07:14,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 00:07:14,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 00:07:14,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 00:07:14,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 00:07:14,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 00:07:14,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 00:07:14,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 00:07:14,026 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 00:07:14,041 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 00:07:14,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 00:07:14,042 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 00:07:14,042 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 00:07:14,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 00:07:14,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 00:07:14,043 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 00:07:14,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 00:07:14,043 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 00:07:14,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 00:07:14,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 00:07:14,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 00:07:14,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 00:07:14,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 00:07:14,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 00:07:14,044 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 00:07:14,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 00:07:14,045 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 00:07:14,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 00:07:14,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 00:07:14,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 00:07:14,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 00:07:14,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:07:14,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 00:07:14,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 00:07:14,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 00:07:14,054 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 00:07:14,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 00:07:14,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 00:07:14,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 00:07:14,054 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> debea56186ef4ab268c0be4274b8e0822edc1b01 [2021-08-26 00:07:14,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 00:07:14,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 00:07:14,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 00:07:14,270 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 00:07:14,271 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 00:07:14,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2021-08-26 00:07:14,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b75f66bc/115c30d514ea447188a3c59a36c35d76/FLAG552ab0bf4 [2021-08-26 00:07:14,672 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 00:07:14,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2021-08-26 00:07:14,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b75f66bc/115c30d514ea447188a3c59a36c35d76/FLAG552ab0bf4 [2021-08-26 00:07:15,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b75f66bc/115c30d514ea447188a3c59a36c35d76 [2021-08-26 00:07:15,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 00:07:15,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 00:07:15,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 00:07:15,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 00:07:15,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 00:07:15,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:07:15" (1/1) ... [2021-08-26 00:07:15,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b41ac39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:15, skipping insertion in model container [2021-08-26 00:07:15,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:07:15" (1/1) ... [2021-08-26 00:07:15,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 00:07:15,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 00:07:15,205 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2021-08-26 00:07:15,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:07:15,215 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 00:07:15,225 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2021-08-26 00:07:15,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:07:15,235 INFO L208 MainTranslator]: Completed translation [2021-08-26 00:07:15,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:15 WrapperNode [2021-08-26 00:07:15,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 00:07:15,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 00:07:15,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 00:07:15,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 00:07:15,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:15" (1/1) ... [2021-08-26 00:07:15,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:15" (1/1) ... [2021-08-26 00:07:15,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 00:07:15,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 00:07:15,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 00:07:15,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 00:07:15,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:15" (1/1) ... [2021-08-26 00:07:15,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:15" (1/1) ... [2021-08-26 00:07:15,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:15" (1/1) ... [2021-08-26 00:07:15,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:15" (1/1) ... [2021-08-26 00:07:15,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:15" (1/1) ... [2021-08-26 00:07:15,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:15" (1/1) ... [2021-08-26 00:07:15,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:15" (1/1) ... [2021-08-26 00:07:15,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 00:07:15,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 00:07:15,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 00:07:15,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 00:07:15,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:15" (1/1) ... [2021-08-26 00:07:15,297 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:07:15,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 00:07:15,312 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 00:07:15,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 00:07:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 00:07:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 00:07:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-08-26 00:07:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 00:07:15,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 00:07:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 00:07:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 00:07:15,501 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 00:07:15,501 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-26 00:07:15,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:07:15 BoogieIcfgContainer [2021-08-26 00:07:15,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 00:07:15,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 00:07:15,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 00:07:15,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 00:07:15,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:07:15" (1/3) ... [2021-08-26 00:07:15,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5d4912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:07:15, skipping insertion in model container [2021-08-26 00:07:15,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:15" (2/3) ... [2021-08-26 00:07:15,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5d4912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:07:15, skipping insertion in model container [2021-08-26 00:07:15,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:07:15" (3/3) ... [2021-08-26 00:07:15,511 INFO L111 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2021-08-26 00:07:15,515 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 00:07:15,515 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 00:07:15,558 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 00:07:15,565 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 00:07:15,565 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 00:07:15,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:07:15,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-26 00:07:15,577 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 00:07:15,578 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-26 00:07:15,579 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 00:07:15,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 00:07:15,585 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-08-26 00:07:15,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 00:07:15,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758301875] [2021-08-26 00:07:15,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:07:15,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 00:07:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 00:07:15,672 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 00:07:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 00:07:15,728 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 00:07:15,730 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 00:07:15,730 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:07:15,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 00:07:15,735 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 00:07:15,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:07:15 BoogieIcfgContainer [2021-08-26 00:07:15,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 00:07:15,759 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 00:07:15,759 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 00:07:15,759 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 00:07:15,759 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:07:15" (3/4) ... [2021-08-26 00:07:15,761 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 00:07:15,762 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 00:07:15,764 INFO L168 Benchmark]: Toolchain (without parser) took 663.08 ms. Allocated memory is still 65.0 MB. Free memory was 49.8 MB in the beginning and 37.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2021-08-26 00:07:15,764 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 46.1 MB. Free memory was 28.3 MB in the beginning and 28.2 MB in the end (delta: 29.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:07:15,765 INFO L168 Benchmark]: CACSL2BoogieTranslator took 135.43 ms. Allocated memory is still 65.0 MB. Free memory was 49.4 MB in the beginning and 39.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-26 00:07:15,765 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.08 ms. Allocated memory is still 65.0 MB. Free memory was 39.6 MB in the beginning and 48.5 MB in the end (delta: -8.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-26 00:07:15,766 INFO L168 Benchmark]: Boogie Preprocessor took 12.61 ms. Allocated memory is still 65.0 MB. Free memory was 48.5 MB in the beginning and 47.5 MB in the end (delta: 971.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:07:15,767 INFO L168 Benchmark]: RCFGBuilder took 215.75 ms. Allocated memory is still 65.0 MB. Free memory was 47.3 MB in the beginning and 35.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 00:07:15,768 INFO L168 Benchmark]: TraceAbstraction took 251.42 ms. Allocated memory is still 65.0 MB. Free memory was 35.1 MB in the beginning and 38.0 MB in the end (delta: -2.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:07:15,772 INFO L168 Benchmark]: Witness Printer took 3.34 ms. Allocated memory is still 65.0 MB. Free memory was 37.9 MB in the beginning and 37.6 MB in the end (delta: 283.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 00:07:15,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 46.1 MB. Free memory was 28.3 MB in the beginning and 28.2 MB in the end (delta: 29.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 135.43 ms. Allocated memory is still 65.0 MB. Free memory was 49.4 MB in the beginning and 39.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.08 ms. Allocated memory is still 65.0 MB. Free memory was 39.6 MB in the beginning and 48.5 MB in the end (delta: -8.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 12.61 ms. Allocated memory is still 65.0 MB. Free memory was 48.5 MB in the beginning and 47.5 MB in the end (delta: 971.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 215.75 ms. Allocated memory is still 65.0 MB. Free memory was 47.3 MB in the beginning and 35.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 251.42 ms. Allocated memory is still 65.0 MB. Free memory was 35.1 MB in the beginning and 38.0 MB in the end (delta: -2.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.34 ms. Allocated memory is still 65.0 MB. Free memory was 37.9 MB in the beginning and 37.6 MB in the end (delta: 283.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 114]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 111, overapproximation of someUnaryDOUBLEoperation at line 122. Possible FailurePath: [L111] float sum = a + b; [L112] union mix m; [L113] m.f = sum [L114] EXPR m.i [L114] COND TRUE !(m.i != 0x80000000) [L114] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 178.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 5.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.5ms SsaConstructionTime, 33.4ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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 [2021-08-26 00:07:15,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 00:07:17,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 00:07:17,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 00:07:17,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 00:07:17,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 00:07:17,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 00:07:17,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 00:07:17,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 00:07:17,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 00:07:17,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 00:07:17,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 00:07:17,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 00:07:17,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 00:07:17,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 00:07:17,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 00:07:17,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 00:07:17,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 00:07:17,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 00:07:17,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 00:07:17,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 00:07:17,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 00:07:17,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 00:07:17,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 00:07:17,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 00:07:17,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 00:07:17,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 00:07:17,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 00:07:17,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 00:07:17,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 00:07:17,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 00:07:17,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 00:07:17,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 00:07:17,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 00:07:17,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 00:07:17,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 00:07:17,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 00:07:17,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 00:07:17,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 00:07:17,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 00:07:17,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 00:07:17,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 00:07:17,652 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 00:07:17,679 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 00:07:17,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 00:07:17,680 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 00:07:17,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 00:07:17,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 00:07:17,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 00:07:17,681 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 00:07:17,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 00:07:17,682 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 00:07:17,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 00:07:17,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 00:07:17,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 00:07:17,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 00:07:17,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 00:07:17,683 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 00:07:17,683 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 00:07:17,683 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 00:07:17,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 00:07:17,683 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 00:07:17,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 00:07:17,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 00:07:17,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 00:07:17,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 00:07:17,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:07:17,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 00:07:17,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 00:07:17,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 00:07:17,684 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 00:07:17,684 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 00:07:17,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 00:07:17,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 00:07:17,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 00:07:17,685 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> debea56186ef4ab268c0be4274b8e0822edc1b01 [2021-08-26 00:07:17,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 00:07:17,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 00:07:17,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 00:07:17,942 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 00:07:17,942 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 00:07:17,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2021-08-26 00:07:18,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7feb31b21/3cdd4f5e84884787861ad6f011ddca84/FLAG6b2e1d234 [2021-08-26 00:07:18,335 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 00:07:18,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2021-08-26 00:07:18,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7feb31b21/3cdd4f5e84884787861ad6f011ddca84/FLAG6b2e1d234 [2021-08-26 00:07:18,352 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7feb31b21/3cdd4f5e84884787861ad6f011ddca84 [2021-08-26 00:07:18,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 00:07:18,356 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 00:07:18,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 00:07:18,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 00:07:18,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 00:07:18,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:07:18" (1/1) ... [2021-08-26 00:07:18,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44b9cf95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:18, skipping insertion in model container [2021-08-26 00:07:18,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:07:18" (1/1) ... [2021-08-26 00:07:18,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 00:07:18,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 00:07:18,507 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2021-08-26 00:07:18,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:07:18,551 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 00:07:18,562 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2021-08-26 00:07:18,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 00:07:18,572 INFO L208 MainTranslator]: Completed translation [2021-08-26 00:07:18,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:18 WrapperNode [2021-08-26 00:07:18,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 00:07:18,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 00:07:18,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 00:07:18,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 00:07:18,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:18" (1/1) ... [2021-08-26 00:07:18,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:18" (1/1) ... [2021-08-26 00:07:18,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 00:07:18,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 00:07:18,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 00:07:18,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 00:07:18,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:18" (1/1) ... [2021-08-26 00:07:18,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:18" (1/1) ... [2021-08-26 00:07:18,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:18" (1/1) ... [2021-08-26 00:07:18,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:18" (1/1) ... [2021-08-26 00:07:18,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:18" (1/1) ... [2021-08-26 00:07:18,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:18" (1/1) ... [2021-08-26 00:07:18,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:18" (1/1) ... [2021-08-26 00:07:18,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 00:07:18,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 00:07:18,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 00:07:18,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 00:07:18,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:18" (1/1) ... [2021-08-26 00:07:18,611 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 00:07:18,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 00:07:18,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 00:07:18,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 00:07:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 00:07:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 00:07:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-26 00:07:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 00:07:18,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 00:07:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-08-26 00:07:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 00:07:18,815 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 00:07:18,816 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-26 00:07:18,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:07:18 BoogieIcfgContainer [2021-08-26 00:07:18,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 00:07:18,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 00:07:18,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 00:07:18,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 00:07:18,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:07:18" (1/3) ... [2021-08-26 00:07:18,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7993bab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:07:18, skipping insertion in model container [2021-08-26 00:07:18,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:07:18" (2/3) ... [2021-08-26 00:07:18,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7993bab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:07:18, skipping insertion in model container [2021-08-26 00:07:18,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:07:18" (3/3) ... [2021-08-26 00:07:18,821 INFO L111 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2021-08-26 00:07:18,824 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 00:07:18,824 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 00:07:18,865 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 00:07:18,868 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 00:07:18,868 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 00:07:18,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:07:18,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-26 00:07:18,877 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 00:07:18,877 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-26 00:07:18,878 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 00:07:18,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 00:07:18,887 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-08-26 00:07:18,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 00:07:18,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974587807] [2021-08-26 00:07:18,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 00:07:18,895 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 00:07:18,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 00:07:18,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 00:07:18,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-26 00:07:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 00:07:19,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-26 00:07:19,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 00:07:19,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:07:19,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 00:07:19,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 00:07:19,200 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 00:07:19,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974587807] [2021-08-26 00:07:19,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974587807] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 00:07:19,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 00:07:19,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-08-26 00:07:19,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357409568] [2021-08-26 00:07:19,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 00:07:19,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 00:07:19,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 00:07:19,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-26 00:07:19,220 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:07:19,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 00:07:19,262 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-08-26 00:07:19,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 00:07:19,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-08-26 00:07:19,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 00:07:19,268 INFO L225 Difference]: With dead ends: 15 [2021-08-26 00:07:19,268 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 00:07:19,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 46.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-26 00:07:19,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 00:07:19,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 00:07:19,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:07:19,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 00:07:19,288 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-08-26 00:07:19,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 00:07:19,289 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 00:07:19,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 00:07:19,290 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 00:07:19,290 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 00:07:19,291 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 00:07:19,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-26 00:07:19,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 00:07:19,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 00:07:19,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 00:07:19,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 00:07:19,531 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 00:07:19,532 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 00:07:19,532 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 00:07:19,532 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 00:07:19,532 INFO L853 garLoopResultBuilder]: At program point L123(lines 119 124) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2021-08-26 00:07:19,533 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 114) no Hoare annotation was computed. [2021-08-26 00:07:19,533 INFO L853 garLoopResultBuilder]: At program point L116(lines 110 117) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2021-08-26 00:07:19,533 INFO L857 garLoopResultBuilder]: For program point L114(line 114) no Hoare annotation was computed. [2021-08-26 00:07:19,533 INFO L857 garLoopResultBuilder]: For program point L114-1(line 114) no Hoare annotation was computed. [2021-08-26 00:07:19,533 INFO L857 garLoopResultBuilder]: For program point L114-3(line 114) no Hoare annotation was computed. [2021-08-26 00:07:19,536 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 00:07:19,553 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 00:07:19,556 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 00:07:19,557 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 00:07:19,557 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 00:07:19,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:07:19 BoogieIcfgContainer [2021-08-26 00:07:19,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 00:07:19,558 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 00:07:19,558 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 00:07:19,558 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 00:07:19,559 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:07:18" (3/4) ... [2021-08-26 00:07:19,561 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 00:07:19,567 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-08-26 00:07:19,567 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-08-26 00:07:19,567 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 00:07:19,567 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 00:07:19,586 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 00:07:19,587 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 00:07:19,588 INFO L168 Benchmark]: Toolchain (without parser) took 1231.49 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 32.3 MB in the beginning and 51.6 MB in the end (delta: -19.3 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-08-26 00:07:19,588 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 52.4 MB. Free memory was 34.5 MB in the beginning and 34.4 MB in the end (delta: 44.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:07:19,588 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.99 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 32.1 MB in the beginning and 58.7 MB in the end (delta: -26.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2021-08-26 00:07:19,589 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.94 ms. Allocated memory is still 75.5 MB. Free memory was 58.7 MB in the beginning and 57.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:07:19,589 INFO L168 Benchmark]: Boogie Preprocessor took 13.45 ms. Allocated memory is still 75.5 MB. Free memory was 57.2 MB in the beginning and 55.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 00:07:19,589 INFO L168 Benchmark]: RCFGBuilder took 210.79 ms. Allocated memory is still 75.5 MB. Free memory was 55.8 MB in the beginning and 43.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 00:07:19,590 INFO L168 Benchmark]: TraceAbstraction took 739.81 ms. Allocated memory is still 75.5 MB. Free memory was 43.1 MB in the beginning and 53.7 MB in the end (delta: -10.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 00:07:19,590 INFO L168 Benchmark]: Witness Printer took 28.50 ms. Allocated memory is still 75.5 MB. Free memory was 53.7 MB in the beginning and 51.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 00:07:19,592 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 52.4 MB. Free memory was 34.5 MB in the beginning and 34.4 MB in the end (delta: 44.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 215.99 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 32.1 MB in the beginning and 58.7 MB in the end (delta: -26.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 18.94 ms. Allocated memory is still 75.5 MB. Free memory was 58.7 MB in the beginning and 57.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.45 ms. Allocated memory is still 75.5 MB. Free memory was 57.2 MB in the beginning and 55.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 210.79 ms. Allocated memory is still 75.5 MB. Free memory was 55.8 MB in the beginning and 43.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 739.81 ms. Allocated memory is still 75.5 MB. Free memory was 43.1 MB in the beginning and 53.7 MB in the end (delta: -10.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 28.50 ms. Allocated memory is still 75.5 MB. Free memory was 53.7 MB in the beginning and 51.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 114]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 672.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 4.5ms, AutomataDifference: 64.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 30.7ms, InitialAbstractionConstructionTime: 4.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 5 SDslu, 5 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 46.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 5.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 21.0ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 2.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 23.2ms SsaConstructionTime, 38.8ms SatisfiabilityAnalysisTime, 155.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 9 NumberOfNonLiveVariables, 34 ConjunctsInSsa, 10 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 110]: Loop Invariant [2021-08-26 00:07:19,597 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 00:07:19,597 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 119]: Loop Invariant [2021-08-26 00:07:19,598 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 00:07:19,598 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2021-08-26 00:07:19,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...