./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 a4ecdabc 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 0.2.0-a4ecdab [2020-10-24 21:57:02,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 21:57:02,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 21:57:03,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 21:57:03,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 21:57:03,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 21:57:03,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 21:57:03,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 21:57:03,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 21:57:03,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 21:57:03,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 21:57:03,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 21:57:03,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 21:57:03,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 21:57:03,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 21:57:03,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 21:57:03,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 21:57:03,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 21:57:03,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 21:57:03,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 21:57:03,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 21:57:03,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 21:57:03,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 21:57:03,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 21:57:03,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 21:57:03,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 21:57:03,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 21:57:03,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 21:57:03,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 21:57:03,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 21:57:03,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 21:57:03,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 21:57:03,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 21:57:03,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 21:57:03,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 21:57:03,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 21:57:03,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 21:57:03,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 21:57:03,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 21:57:03,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 21:57:03,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 21:57:03,136 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 21:57:03,197 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 21:57:03,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 21:57:03,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 21:57:03,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 21:57:03,203 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 21:57:03,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 21:57:03,203 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 21:57:03,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 21:57:03,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 21:57:03,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 21:57:03,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 21:57:03,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 21:57:03,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 21:57:03,206 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 21:57:03,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 21:57:03,207 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 21:57:03,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 21:57:03,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 21:57:03,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 21:57:03,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 21:57:03,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 21:57:03,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 21:57:03,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 21:57:03,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 21:57:03,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 21:57:03,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 21:57:03,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 21:57:03,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 21:57:03,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 21:57:03,211 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> debea56186ef4ab268c0be4274b8e0822edc1b01 [2020-10-24 21:57:03,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 21:57:03,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 21:57:03,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 21:57:03,702 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 21:57:03,703 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 21:57:03,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2020-10-24 21:57:03,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d77e328f/29c089b3bcc645bda5db85092c438d9a/FLAG984ef7aba [2020-10-24 21:57:04,411 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 21:57:04,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2020-10-24 21:57:04,423 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d77e328f/29c089b3bcc645bda5db85092c438d9a/FLAG984ef7aba [2020-10-24 21:57:04,767 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d77e328f/29c089b3bcc645bda5db85092c438d9a [2020-10-24 21:57:04,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 21:57:04,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 21:57:04,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 21:57:04,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 21:57:04,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 21:57:04,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:57:04" (1/1) ... [2020-10-24 21:57:04,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6374b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:04, skipping insertion in model container [2020-10-24 21:57:04,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:57:04" (1/1) ... [2020-10-24 21:57:04,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 21:57:04,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 21:57:05,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:57:05,047 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 21:57:05,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:57:05,086 INFO L208 MainTranslator]: Completed translation [2020-10-24 21:57:05,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:05 WrapperNode [2020-10-24 21:57:05,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 21:57:05,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 21:57:05,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 21:57:05,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 21:57:05,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:05" (1/1) ... [2020-10-24 21:57:05,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:05" (1/1) ... [2020-10-24 21:57:05,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 21:57:05,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 21:57:05,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 21:57:05,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 21:57:05,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:05" (1/1) ... [2020-10-24 21:57:05,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:05" (1/1) ... [2020-10-24 21:57:05,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:05" (1/1) ... [2020-10-24 21:57:05,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:05" (1/1) ... [2020-10-24 21:57:05,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:05" (1/1) ... [2020-10-24 21:57:05,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:05" (1/1) ... [2020-10-24 21:57:05,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:05" (1/1) ... [2020-10-24 21:57:05,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 21:57:05,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 21:57:05,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 21:57:05,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 21:57:05,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:05" (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 [2020-10-24 21:57:05,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 21:57:05,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 21:57:05,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 21:57:05,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 21:57:05,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 21:57:05,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 21:57:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 21:57:05,710 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 21:57:05,710 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-24 21:57:05,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:05 BoogieIcfgContainer [2020-10-24 21:57:05,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 21:57:05,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 21:57:05,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 21:57:05,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 21:57:05,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:57:04" (1/3) ... [2020-10-24 21:57:05,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26df6ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:57:05, skipping insertion in model container [2020-10-24 21:57:05,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:05" (2/3) ... [2020-10-24 21:57:05,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26df6ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:57:05, skipping insertion in model container [2020-10-24 21:57:05,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:05" (3/3) ... [2020-10-24 21:57:05,725 INFO L111 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2020-10-24 21:57:05,740 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 21:57:05,745 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 21:57:05,764 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 21:57:05,815 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 21:57:05,816 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 21:57:05,816 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 21:57:05,816 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 21:57:05,817 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 21:57:05,817 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 21:57:05,817 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 21:57:05,817 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 21:57:05,838 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-10-24 21:57:05,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-24 21:57:05,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:57:05,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-24 21:57:05,846 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:57:05,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:57:05,854 INFO L82 PathProgramCache]: Analyzing trace with hash 28693859, now seen corresponding path program 1 times [2020-10-24 21:57:05,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 21:57:05,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257627145] [2020-10-24 21:57:05,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 21:57:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:57:06,039 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:57:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:57:06,096 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:57:06,134 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 21:57:06,135 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 21:57:06,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 21:57:06,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:57:06 BoogieIcfgContainer [2020-10-24 21:57:06,166 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 21:57:06,167 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 21:57:06,167 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 21:57:06,167 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 21:57:06,168 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:05" (3/4) ... [2020-10-24 21:57:06,172 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 21:57:06,172 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 21:57:06,175 INFO L168 Benchmark]: Toolchain (without parser) took 1401.94 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 22.0 MB in the beginning and 29.7 MB in the end (delta: -7.7 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:06,176 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 44.0 MB. Free memory was 24.7 MB in the beginning and 24.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:57:06,178 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.22 ms. Allocated memory is still 44.0 MB. Free memory was 21.4 MB in the beginning and 22.9 MB in the end (delta: -1.5 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:06,179 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.71 ms. Allocated memory is still 44.0 MB. Free memory was 22.8 MB in the beginning and 21.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:06,180 INFO L168 Benchmark]: Boogie Preprocessor took 26.36 ms. Allocated memory is still 44.0 MB. Free memory was 21.5 MB in the beginning and 20.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:57:06,181 INFO L168 Benchmark]: RCFGBuilder took 556.93 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.3 MB in the beginning and 29.1 MB in the end (delta: -8.7 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:06,182 INFO L168 Benchmark]: TraceAbstraction took 450.73 ms. Allocated memory is still 54.5 MB. Free memory was 28.7 MB in the beginning and 30.3 MB in the end (delta: -1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:57:06,182 INFO L168 Benchmark]: Witness Printer took 5.93 ms. Allocated memory is still 54.5 MB. Free memory was 30.0 MB in the beginning and 29.7 MB in the end (delta: 266.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:57:06,187 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 44.0 MB. Free memory was 24.7 MB in the beginning and 24.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.22 ms. Allocated memory is still 44.0 MB. Free memory was 21.4 MB in the beginning and 22.9 MB in the end (delta: -1.5 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.71 ms. Allocated memory is still 44.0 MB. Free memory was 22.8 MB in the beginning and 21.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.36 ms. Allocated memory is still 44.0 MB. Free memory was 21.5 MB in the beginning and 20.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 556.93 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.3 MB in the beginning and 29.1 MB in the end (delta: -8.7 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 450.73 ms. Allocated memory is still 54.5 MB. Free memory was 28.7 MB in the beginning and 30.3 MB in the end (delta: -1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.93 ms. Allocated memory is still 54.5 MB. Free memory was 30.0 MB in the beginning and 29.7 MB in the end (delta: 266.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() 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) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "float-zero-sum1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, 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=12occurred 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, 5 NumberOfCodeBlocks, 5 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 0.2.0-a4ecdab [2020-10-24 21:57:08,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 21:57:08,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 21:57:08,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 21:57:08,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 21:57:08,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 21:57:08,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 21:57:08,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 21:57:08,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 21:57:08,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 21:57:08,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 21:57:08,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 21:57:08,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 21:57:08,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 21:57:08,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 21:57:08,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 21:57:08,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 21:57:08,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 21:57:09,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 21:57:09,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 21:57:09,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 21:57:09,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 21:57:09,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 21:57:09,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 21:57:09,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 21:57:09,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 21:57:09,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 21:57:09,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 21:57:09,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 21:57:09,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 21:57:09,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 21:57:09,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 21:57:09,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 21:57:09,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 21:57:09,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 21:57:09,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 21:57:09,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 21:57:09,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 21:57:09,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 21:57:09,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 21:57:09,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 21:57:09,051 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 21:57:09,109 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 21:57:09,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 21:57:09,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 21:57:09,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 21:57:09,114 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 21:57:09,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 21:57:09,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 21:57:09,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 21:57:09,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 21:57:09,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 21:57:09,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 21:57:09,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 21:57:09,117 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 21:57:09,118 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 21:57:09,118 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 21:57:09,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 21:57:09,118 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 21:57:09,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 21:57:09,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 21:57:09,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 21:57:09,120 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 21:57:09,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 21:57:09,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 21:57:09,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 21:57:09,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 21:57:09,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 21:57:09,122 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 21:57:09,122 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 21:57:09,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 21:57:09,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 21:57:09,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 21:57:09,123 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> debea56186ef4ab268c0be4274b8e0822edc1b01 [2020-10-24 21:57:09,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 21:57:09,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 21:57:09,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 21:57:09,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 21:57:09,587 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 21:57:09,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2020-10-24 21:57:09,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a55a7925a/a4d0eb43fd8849fd821c8a7d831cce17/FLAG1c9659093 [2020-10-24 21:57:10,331 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 21:57:10,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2020-10-24 21:57:10,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a55a7925a/a4d0eb43fd8849fd821c8a7d831cce17/FLAG1c9659093 [2020-10-24 21:57:10,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a55a7925a/a4d0eb43fd8849fd821c8a7d831cce17 [2020-10-24 21:57:10,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 21:57:10,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 21:57:10,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 21:57:10,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 21:57:10,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 21:57:10,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:57:10" (1/1) ... [2020-10-24 21:57:10,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aa8104c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:10, skipping insertion in model container [2020-10-24 21:57:10,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:57:10" (1/1) ... [2020-10-24 21:57:10,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 21:57:10,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 21:57:10,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:57:10,975 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 21:57:10,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:57:11,020 INFO L208 MainTranslator]: Completed translation [2020-10-24 21:57:11,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:11 WrapperNode [2020-10-24 21:57:11,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 21:57:11,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 21:57:11,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 21:57:11,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 21:57:11,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:11" (1/1) ... [2020-10-24 21:57:11,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:11" (1/1) ... [2020-10-24 21:57:11,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 21:57:11,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 21:57:11,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 21:57:11,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 21:57:11,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:11" (1/1) ... [2020-10-24 21:57:11,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:11" (1/1) ... [2020-10-24 21:57:11,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:11" (1/1) ... [2020-10-24 21:57:11,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:11" (1/1) ... [2020-10-24 21:57:11,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:11" (1/1) ... [2020-10-24 21:57:11,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:11" (1/1) ... [2020-10-24 21:57:11,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:11" (1/1) ... [2020-10-24 21:57:11,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 21:57:11,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 21:57:11,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 21:57:11,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 21:57:11,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:11" (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 [2020-10-24 21:57:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 21:57:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 21:57:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 21:57:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 21:57:11,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 21:57:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-24 21:57:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 21:57:11,511 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 21:57:11,512 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-24 21:57:11,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:11 BoogieIcfgContainer [2020-10-24 21:57:11,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 21:57:11,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 21:57:11,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 21:57:11,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 21:57:11,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:57:10" (1/3) ... [2020-10-24 21:57:11,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed90bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:57:11, skipping insertion in model container [2020-10-24 21:57:11,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:11" (2/3) ... [2020-10-24 21:57:11,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed90bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:57:11, skipping insertion in model container [2020-10-24 21:57:11,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:11" (3/3) ... [2020-10-24 21:57:11,523 INFO L111 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2020-10-24 21:57:11,538 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 21:57:11,545 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 21:57:11,565 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 21:57:11,597 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 21:57:11,597 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 21:57:11,597 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 21:57:11,598 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 21:57:11,598 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 21:57:11,598 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 21:57:11,598 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 21:57:11,599 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 21:57:11,615 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-10-24 21:57:11,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-24 21:57:11,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:57:11,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-24 21:57:11,627 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:57:11,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:57:11,635 INFO L82 PathProgramCache]: Analyzing trace with hash 28693859, now seen corresponding path program 1 times [2020-10-24 21:57:11,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 21:57:11,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166716394] [2020-10-24 21:57:11,650 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 [2020-10-24 21:57:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 21:57:11,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-24 21:57:11,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 21:57:11,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:57:11,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 21:57:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:57:11,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166716394] [2020-10-24 21:57:11,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 21:57:11,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 21:57:11,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29325] [2020-10-24 21:57:11,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 21:57:11,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 21:57:12,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 21:57:12,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 21:57:12,007 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 6 states. [2020-10-24 21:57:12,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 21:57:12,104 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-10-24 21:57:12,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 21:57:12,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2020-10-24 21:57:12,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 21:57:12,112 INFO L225 Difference]: With dead ends: 17 [2020-10-24 21:57:12,112 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 21:57:12,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-24 21:57:12,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 21:57:12,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 21:57:12,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 21:57:12,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 21:57:12,143 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2020-10-24 21:57:12,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 21:57:12,143 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 21:57:12,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 21:57:12,143 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 21:57:12,143 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 21:57:12,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 21:57:12,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 21:57:12,412 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-24 21:57:12,412 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-24 21:57:12,412 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-24 21:57:12,413 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-24 21:57:12,413 INFO L270 CegarLoopResult]: At program point L123(lines 119 124) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2020-10-24 21:57:12,413 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-24 21:57:12,413 INFO L270 CegarLoopResult]: At program point L116(lines 110 117) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2020-10-24 21:57:12,413 INFO L274 CegarLoopResult]: For program point L114(line 114) no Hoare annotation was computed. [2020-10-24 21:57:12,414 INFO L274 CegarLoopResult]: For program point L114-2(line 114) no Hoare annotation was computed. [2020-10-24 21:57:12,414 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-24 21:57:12,414 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-24 21:57:12,415 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-10-24 21:57:12,425 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 21:57:12,428 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 21:57:12,431 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 21:57:12,431 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 21:57:12,432 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 21:57:12,432 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 21:57:12,433 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 21:57:12,433 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 21:57:12,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:57:12 BoogieIcfgContainer [2020-10-24 21:57:12,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 21:57:12,437 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 21:57:12,437 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 21:57:12,437 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 21:57:12,438 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:11" (3/4) ... [2020-10-24 21:57:12,442 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-24 21:57:12,454 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-24 21:57:12,454 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-24 21:57:12,455 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-24 21:57:12,455 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-24 21:57:12,500 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 21:57:12,500 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 21:57:12,503 INFO L168 Benchmark]: Toolchain (without parser) took 1822.18 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 19.2 MB in the beginning and 20.8 MB in the end (delta: -1.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:12,504 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 41.9 MB. Free memory is still 23.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:57:12,505 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.26 ms. Allocated memory is still 41.9 MB. Free memory was 18.6 MB in the beginning and 19.6 MB in the end (delta: -973.3 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:12,506 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.46 ms. Allocated memory is still 41.9 MB. Free memory was 19.6 MB in the beginning and 18.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:12,506 INFO L168 Benchmark]: Boogie Preprocessor took 31.99 ms. Allocated memory is still 41.9 MB. Free memory was 18.0 MB in the beginning and 16.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:12,507 INFO L168 Benchmark]: RCFGBuilder took 414.11 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 16.7 MB in the beginning and 24.6 MB in the end (delta: -7.9 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:12,508 INFO L168 Benchmark]: TraceAbstraction took 920.41 ms. Allocated memory is still 50.3 MB. Free memory was 24.1 MB in the beginning and 23.1 MB in the end (delta: 983.4 kB). Peak memory consumption was 999.7 kB. Max. memory is 16.1 GB. [2020-10-24 21:57:12,509 INFO L168 Benchmark]: Witness Printer took 63.64 ms. Allocated memory is still 50.3 MB. Free memory was 23.1 MB in the beginning and 20.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:12,513 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 41.9 MB. Free memory is still 23.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.26 ms. Allocated memory is still 41.9 MB. Free memory was 18.6 MB in the beginning and 19.6 MB in the end (delta: -973.3 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.46 ms. Allocated memory is still 41.9 MB. Free memory was 19.6 MB in the beginning and 18.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.99 ms. Allocated memory is still 41.9 MB. Free memory was 18.0 MB in the beginning and 16.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 414.11 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 16.7 MB in the beginning and 24.6 MB in the end (delta: -7.9 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 920.41 ms. Allocated memory is still 50.3 MB. Free memory was 24.1 MB in the beginning and 23.1 MB in the end (delta: 983.4 kB). Peak memory consumption was 999.7 kB. Max. memory is 16.1 GB. * Witness Printer took 63.64 ms. Allocated memory is still 50.3 MB. Free memory was 23.1 MB in the beginning and 20.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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 - InvariantResult [Line: 119]: Loop Invariant [2020-10-24 21:57:12,525 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 21:57:12,526 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 21:57:12,526 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 21:57:12,527 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 110]: Loop Invariant [2020-10-24 21:57:12,527 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 21:57:12,527 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 21:57:12,528 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 21:57:12,528 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 5 SDslu, 10 SDs, 0 SdLazy, 4 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 212 SizeOfPredicates, 10 NumberOfNonLiveVariables, 35 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...