./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 9a8b2e8d 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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float-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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float-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 0.1.25-9a8b2e8 [2020-10-20 00:15:37,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:15:37,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:15:37,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:15:37,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:15:37,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:15:37,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:15:37,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:15:37,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:15:37,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:15:37,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:15:37,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:15:37,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:15:37,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:15:37,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:15:37,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:15:37,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:15:37,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:15:37,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:15:37,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:15:37,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:15:37,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:15:37,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:15:37,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:15:37,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:15:37,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:15:37,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:15:37,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:15:37,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:15:37,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:15:37,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:15:37,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:15:37,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:15:37,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:15:37,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:15:37,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:15:37,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:15:37,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:15:37,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:15:37,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:15:37,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:15:37,166 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:15:37,189 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:15:37,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:15:37,191 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:15:37,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:15:37,191 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:15:37,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:15:37,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:15:37,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:15:37,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:15:37,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:15:37,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:15:37,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:15:37,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:15:37,193 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:15:37,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:15:37,193 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:15:37,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:15:37,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:15:37,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:15:37,194 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:15:37,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:15:37,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:15:37,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:15:37,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:15:37,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:15:37,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:15:37,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:15:37,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:15:37,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:15:37,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(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 [2020-10-20 00:15:37,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:15:37,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:15:37,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:15:37,451 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:15:37,454 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:15:37,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2020-10-20 00:15:37,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf07a2257/869bf78f5a56437fb80f75c66395b295/FLAGa2e6cf74c [2020-10-20 00:15:38,044 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:15:38,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2020-10-20 00:15:38,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf07a2257/869bf78f5a56437fb80f75c66395b295/FLAGa2e6cf74c [2020-10-20 00:15:38,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf07a2257/869bf78f5a56437fb80f75c66395b295 [2020-10-20 00:15:38,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:15:38,458 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:15:38,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:15:38,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:15:38,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:15:38,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:15:38" (1/1) ... [2020-10-20 00:15:38,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651199fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:38, skipping insertion in model container [2020-10-20 00:15:38,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:15:38" (1/1) ... [2020-10-20 00:15:38,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:15:38,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:15:38,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:15:38,762 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:15:38,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:15:38,805 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:15:38,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:38 WrapperNode [2020-10-20 00:15:38,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:15:38,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:15:38,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:15:38,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:15:38,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:38" (1/1) ... [2020-10-20 00:15:38,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:38" (1/1) ... [2020-10-20 00:15:38,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:15:38,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:15:38,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:15:38,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:15:38,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:38" (1/1) ... [2020-10-20 00:15:38,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:38" (1/1) ... [2020-10-20 00:15:38,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:38" (1/1) ... [2020-10-20 00:15:38,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:38" (1/1) ... [2020-10-20 00:15:38,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:38" (1/1) ... [2020-10-20 00:15:38,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:38" (1/1) ... [2020-10-20 00:15:38,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:38" (1/1) ... [2020-10-20 00:15:38,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:15:38,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:15:38,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:15:38,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:15:38,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:38" (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 [2020-10-20 00:15:38,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:15:38,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:15:38,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:15:38,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:15:38,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:15:38,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:15:38,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:15:39,148 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:15:39,149 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-20 00:15:39,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:39 BoogieIcfgContainer [2020-10-20 00:15:39,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:15:39,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:15:39,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:15:39,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:15:39,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:15:38" (1/3) ... [2020-10-20 00:15:39,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6640b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:15:39, skipping insertion in model container [2020-10-20 00:15:39,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:38" (2/3) ... [2020-10-20 00:15:39,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6640b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:15:39, skipping insertion in model container [2020-10-20 00:15:39,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:39" (3/3) ... [2020-10-20 00:15:39,160 INFO L111 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2020-10-20 00:15:39,173 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:15:39,180 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:15:39,196 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:15:39,226 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:15:39,227 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:15:39,227 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:15:39,227 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:15:39,227 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:15:39,228 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:15:39,228 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:15:39,228 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:15:39,248 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-10-20 00:15:39,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 00:15:39,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:15:39,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 00:15:39,259 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:15:39,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:15:39,267 INFO L82 PathProgramCache]: Analyzing trace with hash 28693859, now seen corresponding path program 1 times [2020-10-20 00:15:39,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:15:39,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351065381] [2020-10-20 00:15:39,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:15:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:15:39,442 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:15:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:15:39,469 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:15:39,492 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:15:39,493 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:15:39,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:15:39,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:15:39 BoogieIcfgContainer [2020-10-20 00:15:39,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:15:39,516 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:15:39,516 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:15:39,517 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:15:39,527 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:39" (3/4) ... [2020-10-20 00:15:39,531 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:15:39,532 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:15:39,535 INFO L168 Benchmark]: Toolchain (without parser) took 1080.39 ms. Allocated memory was 41.9 MB in the beginning and 45.1 MB in the end (delta: 3.1 MB). Free memory was 20.4 MB in the beginning and 26.3 MB in the end (delta: -5.9 MB). Peak memory consumption was 15.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:39,536 INFO L168 Benchmark]: CDTParser took 0.86 ms. Allocated memory is still 32.0 MB. Free memory was 9.2 MB in the beginning and 9.2 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. [2020-10-20 00:15:39,537 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.84 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 19.5 MB in the beginning and 21.1 MB in the end (delta: -1.6 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:39,538 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.36 ms. Allocated memory is still 42.5 MB. Free memory was 21.0 MB in the beginning and 19.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:39,538 INFO L168 Benchmark]: Boogie Preprocessor took 26.55 ms. Allocated memory is still 42.5 MB. Free memory was 19.3 MB in the beginning and 18.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:39,540 INFO L168 Benchmark]: RCFGBuilder took 276.44 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 18.0 MB in the beginning and 23.0 MB in the end (delta: -5.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:39,540 INFO L168 Benchmark]: TraceAbstraction took 363.63 ms. Allocated memory is still 44.6 MB. Free memory was 22.6 MB in the beginning and 8.6 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:39,541 INFO L168 Benchmark]: Witness Printer took 15.54 ms. Allocated memory was 44.6 MB in the beginning and 45.1 MB in the end (delta: 524.3 kB). Free memory was 8.6 MB in the beginning and 26.3 MB in the end (delta: -17.7 MB). Peak memory consumption was 639.5 kB. Max. memory is 14.3 GB. [2020-10-20 00:15:39,547 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.86 ms. Allocated memory is still 32.0 MB. Free memory was 9.2 MB in the beginning and 9.2 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 346.84 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 19.5 MB in the beginning and 21.1 MB in the end (delta: -1.6 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 40.36 ms. Allocated memory is still 42.5 MB. Free memory was 21.0 MB in the beginning and 19.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 26.55 ms. Allocated memory is still 42.5 MB. Free memory was 19.3 MB in the beginning and 18.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 276.44 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 18.0 MB in the beginning and 23.0 MB in the end (delta: -5.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 363.63 ms. Allocated memory is still 44.6 MB. Free memory was 22.6 MB in the beginning and 8.6 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 14.3 GB. * Witness Printer took 15.54 ms. Allocated memory was 44.6 MB in the beginning and 45.1 MB in the end (delta: 524.3 kB). Free memory was 8.6 MB in the beginning and 26.3 MB in the end (delta: -17.7 MB). Peak memory consumption was 639.5 kB. Max. memory is 14.3 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: 0.2s, 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 0.1.25-9a8b2e8 [2020-10-20 00:15:41,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:15:41,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:15:41,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:15:41,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:15:41,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:15:41,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:15:41,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:15:41,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:15:41,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:15:41,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:15:41,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:15:41,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:15:41,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:15:41,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:15:41,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:15:41,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:15:41,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:15:41,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:15:41,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:15:41,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:15:41,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:15:41,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:15:41,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:15:41,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:15:41,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:15:41,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:15:41,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:15:41,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:15:41,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:15:41,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:15:41,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:15:41,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:15:41,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:15:41,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:15:41,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:15:41,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:15:41,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:15:41,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:15:41,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:15:41,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:15:41,873 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:15:41,896 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:15:41,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:15:41,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:15:41,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:15:41,898 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:15:41,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:15:41,899 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:15:41,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:15:41,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:15:41,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:15:41,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:15:41,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:15:41,901 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:15:41,901 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:15:41,901 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:15:41,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:15:41,902 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:15:41,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:15:41,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:15:41,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:15:41,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:15:41,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:15:41,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:15:41,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:15:41,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:15:41,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:15:41,904 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:15:41,904 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:15:41,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:15:41,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:15:41,905 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:15:41,905 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(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 [2020-10-20 00:15:42,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:15:42,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:15:42,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:15:42,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:15:42,135 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:15:42,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2020-10-20 00:15:42,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a536e0a76/fb602eca8c5544cdb909a3c7aaffc5e3/FLAGb06f24b21 [2020-10-20 00:15:42,683 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:15:42,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2020-10-20 00:15:42,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a536e0a76/fb602eca8c5544cdb909a3c7aaffc5e3/FLAGb06f24b21 [2020-10-20 00:15:43,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a536e0a76/fb602eca8c5544cdb909a3c7aaffc5e3 [2020-10-20 00:15:43,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:15:43,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:15:43,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:15:43,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:15:43,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:15:43,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:15:43" (1/1) ... [2020-10-20 00:15:43,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd9ef65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:43, skipping insertion in model container [2020-10-20 00:15:43,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:15:43" (1/1) ... [2020-10-20 00:15:43,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:15:43,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:15:43,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:15:43,363 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:15:43,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:15:43,409 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:15:43,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:43 WrapperNode [2020-10-20 00:15:43,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:15:43,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:15:43,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:15:43,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:15:43,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:43" (1/1) ... [2020-10-20 00:15:43,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:43" (1/1) ... [2020-10-20 00:15:43,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:15:43,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:15:43,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:15:43,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:15:43,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:43" (1/1) ... [2020-10-20 00:15:43,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:43" (1/1) ... [2020-10-20 00:15:43,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:43" (1/1) ... [2020-10-20 00:15:43,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:43" (1/1) ... [2020-10-20 00:15:43,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:43" (1/1) ... [2020-10-20 00:15:43,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:43" (1/1) ... [2020-10-20 00:15:43,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:43" (1/1) ... [2020-10-20 00:15:43,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:15:43,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:15:43,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:15:43,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:15:43,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:43" (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 [2020-10-20 00:15:43,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:15:43,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:15:43,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:15:43,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:15:43,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:15:43,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-20 00:15:43,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:15:43,846 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:15:43,846 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-20 00:15:43,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:43 BoogieIcfgContainer [2020-10-20 00:15:43,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:15:43,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:15:43,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:15:43,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:15:43,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:15:43" (1/3) ... [2020-10-20 00:15:43,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1356e259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:15:43, skipping insertion in model container [2020-10-20 00:15:43,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:43" (2/3) ... [2020-10-20 00:15:43,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1356e259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:15:43, skipping insertion in model container [2020-10-20 00:15:43,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:43" (3/3) ... [2020-10-20 00:15:43,858 INFO L111 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2020-10-20 00:15:43,870 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:15:43,878 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:15:43,898 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:15:43,934 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:15:43,934 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:15:43,935 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:15:43,935 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:15:43,936 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:15:43,936 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:15:43,937 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:15:43,937 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:15:43,971 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-10-20 00:15:43,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 00:15:44,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:15:44,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 00:15:44,004 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:15:44,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:15:44,022 INFO L82 PathProgramCache]: Analyzing trace with hash 28693859, now seen corresponding path program 1 times [2020-10-20 00:15:44,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:15:44,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428536615] [2020-10-20 00:15:44,052 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 [2020-10-20 00:15:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:15:44,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 00:15:44,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:15:44,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:15:44,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:15:44,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:15:44,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428536615] [2020-10-20 00:15:44,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:15:44,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-20 00:15:44,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141868458] [2020-10-20 00:15:44,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 00:15:44,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:15:44,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 00:15:44,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:15:44,329 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 6 states. [2020-10-20 00:15:44,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:15:44,412 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-10-20 00:15:44,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:15:44,415 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2020-10-20 00:15:44,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:15:44,424 INFO L225 Difference]: With dead ends: 17 [2020-10-20 00:15:44,425 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:15:44,429 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 [2020-10-20 00:15:44,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:15:44,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:15:44,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:15:44,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:15:44,454 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2020-10-20 00:15:44,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:15:44,455 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:15:44,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 00:15:44,455 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:15:44,455 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:15:44,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:15:44,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:15:44,709 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:15:44,710 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:15:44,710 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:15:44,710 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:15:44,711 INFO L270 CegarLoopResult]: At program point L123(lines 119 124) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2020-10-20 00:15:44,711 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-20 00:15:44,711 INFO L270 CegarLoopResult]: At program point L116(lines 110 117) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2020-10-20 00:15:44,711 INFO L274 CegarLoopResult]: For program point L114(line 114) no Hoare annotation was computed. [2020-10-20 00:15:44,712 INFO L274 CegarLoopResult]: For program point L114-2(line 114) no Hoare annotation was computed. [2020-10-20 00:15:44,712 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-20 00:15:44,712 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-20 00:15:44,712 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-10-20 00:15:44,721 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:15:44,723 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:15:44,725 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:15:44,725 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:15:44,726 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:15:44,726 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:15:44,726 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:15:44,726 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:15:44,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:15:44 BoogieIcfgContainer [2020-10-20 00:15:44,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:15:44,729 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:15:44,729 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:15:44,729 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:15:44,730 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:43" (3/4) ... [2020-10-20 00:15:44,733 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:15:44,743 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-20 00:15:44,743 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-20 00:15:44,743 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:15:44,744 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:15:44,789 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:15:44,789 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:15:44,792 INFO L168 Benchmark]: Toolchain (without parser) took 1722.18 ms. Allocated memory was 40.4 MB in the beginning and 46.1 MB in the end (delta: 5.8 MB). Free memory was 18.1 MB in the beginning and 15.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 8.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:44,793 INFO L168 Benchmark]: CDTParser took 9.83 ms. Allocated memory is still 30.9 MB. Free memory was 6.1 MB in the beginning and 17.2 MB in the end (delta: -11.1 MB). Peak memory consumption was 881.9 kB. Max. memory is 14.3 GB. [2020-10-20 00:15:44,794 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.70 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.3 MB in the beginning and 16.6 MB in the end (delta: 708.3 kB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:44,795 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.09 ms. Allocated memory is still 41.4 MB. Free memory was 16.6 MB in the beginning and 14.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:44,796 INFO L168 Benchmark]: Boogie Preprocessor took 33.57 ms. Allocated memory is still 41.4 MB. Free memory was 14.7 MB in the beginning and 13.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:44,797 INFO L168 Benchmark]: RCFGBuilder took 358.24 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 13.3 MB in the beginning and 16.3 MB in the end (delta: -3.0 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:44,797 INFO L168 Benchmark]: TraceAbstraction took 879.18 ms. Allocated memory was 43.5 MB in the beginning and 46.1 MB in the end (delta: 2.6 MB). Free memory was 15.6 MB in the beginning and 18.0 MB in the end (delta: -2.4 MB). Peak memory consumption was 181.4 kB. Max. memory is 14.3 GB. [2020-10-20 00:15:44,798 INFO L168 Benchmark]: Witness Printer took 60.65 ms. Allocated memory is still 46.1 MB. Free memory was 18.0 MB in the beginning and 15.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:44,803 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 9.83 ms. Allocated memory is still 30.9 MB. Free memory was 6.1 MB in the beginning and 17.2 MB in the end (delta: -11.1 MB). Peak memory consumption was 881.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 334.70 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.3 MB in the beginning and 16.6 MB in the end (delta: 708.3 kB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 45.09 ms. Allocated memory is still 41.4 MB. Free memory was 16.6 MB in the beginning and 14.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 33.57 ms. Allocated memory is still 41.4 MB. Free memory was 14.7 MB in the beginning and 13.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 358.24 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 13.3 MB in the beginning and 16.3 MB in the end (delta: -3.0 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 879.18 ms. Allocated memory was 43.5 MB in the beginning and 46.1 MB in the end (delta: 2.6 MB). Free memory was 15.6 MB in the beginning and 18.0 MB in the end (delta: -2.4 MB). Peak memory consumption was 181.4 kB. Max. memory is 14.3 GB. * Witness Printer took 60.65 ms. Allocated memory is still 46.1 MB. Free memory was 18.0 MB in the beginning and 15.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 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 [2020-10-20 00:15:44,814 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:15:44,814 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:15:44,814 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:15:44,814 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 110]: Loop Invariant [2020-10-20 00:15:44,815 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:15:44,815 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:15:44,815 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:15:44,815 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...