./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1031.c --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/float-newlib/double_req_bl_1031.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c4d19baf0429684b688f90d909ef640d9fb6537 ....................................................................................................................................................................................................................................................................................... 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/float-newlib/double_req_bl_1031.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c4d19baf0429684b688f90d909ef640d9fb6537 .................................................................................................................................................................................................................................................................................................................................................................................................. 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 00:32:25,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:32:25,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:32:25,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:32:25,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:32:25,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:32:25,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:32:25,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:32:25,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:32:25,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:32:25,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:32:25,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:32:25,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:32:25,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:32:25,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:32:25,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:32:25,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:32:25,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:32:25,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:32:25,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:32:25,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:32:25,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:32:25,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:32:25,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:32:25,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:32:25,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:32:25,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:32:25,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:32:25,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:32:25,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:32:25,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:32:25,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:32:25,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:32:25,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:32:25,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:32:25,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:32:25,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:32:25,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:32:25,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:32:25,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:32:25,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:32:25,282 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:32:25,307 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:32:25,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:32:25,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:32:25,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:32:25,312 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:32:25,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:32:25,313 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:32:25,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:32:25,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:32:25,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:32:25,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:32:25,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:32:25,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:32:25,314 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:32:25,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:32:25,314 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:32:25,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:32:25,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:32:25,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:32:25,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:32:25,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:32:25,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:25,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:32:25,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:32:25,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:32:25,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:32:25,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:32:25,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:32:25,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:32:25,319 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 -> 2c4d19baf0429684b688f90d909ef640d9fb6537 [2020-10-20 00:32:25,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:32:25,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:32:25,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:32:25,565 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:32:25,566 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:32:25,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2020-10-20 00:32:25,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e08b8c051/f01a57a54bd34807992d88988ef8d8c4/FLAG87c47e7ac [2020-10-20 00:32:26,156 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:32:26,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2020-10-20 00:32:26,164 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e08b8c051/f01a57a54bd34807992d88988ef8d8c4/FLAG87c47e7ac [2020-10-20 00:32:26,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e08b8c051/f01a57a54bd34807992d88988ef8d8c4 [2020-10-20 00:32:26,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:32:26,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:32:26,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:26,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:32:26,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:32:26,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:26" (1/1) ... [2020-10-20 00:32:26,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@309d7a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:26, skipping insertion in model container [2020-10-20 00:32:26,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:26" (1/1) ... [2020-10-20 00:32:26,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:32:26,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:32:26,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:26,877 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:32:26,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:26,929 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:32:26,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:26 WrapperNode [2020-10-20 00:32:26,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:26,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:26,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:32:26,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:32:26,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:26" (1/1) ... [2020-10-20 00:32:26,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:26" (1/1) ... [2020-10-20 00:32:26,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:26,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:32:26,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:32:26,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:32:26,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:26" (1/1) ... [2020-10-20 00:32:26,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:26" (1/1) ... [2020-10-20 00:32:26,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:26" (1/1) ... [2020-10-20 00:32:26,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:26" (1/1) ... [2020-10-20 00:32:27,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:26" (1/1) ... [2020-10-20 00:32:27,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:26" (1/1) ... [2020-10-20 00:32:27,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:26" (1/1) ... [2020-10-20 00:32:27,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:32:27,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:32:27,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:32:27,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:32:27,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:32:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:32:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:32:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:32:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:32:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:32:27,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:32:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:32:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:32:27,472 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:32:27,472 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-20 00:32:27,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:27 BoogieIcfgContainer [2020-10-20 00:32:27,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:32:27,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:32:27,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:32:27,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:32:27,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:32:26" (1/3) ... [2020-10-20 00:32:27,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395585cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:27, skipping insertion in model container [2020-10-20 00:32:27,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:26" (2/3) ... [2020-10-20 00:32:27,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395585cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:27, skipping insertion in model container [2020-10-20 00:32:27,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:27" (3/3) ... [2020-10-20 00:32:27,482 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2020-10-20 00:32:27,494 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:32:27,501 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:32:27,512 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:32:27,532 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:32:27,532 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:32:27,532 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:32:27,533 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:32:27,533 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:32:27,533 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:32:27,533 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:32:27,534 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:32:27,548 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-20 00:32:27,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:32:27,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:27,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:27,555 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:27,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:27,560 INFO L82 PathProgramCache]: Analyzing trace with hash 2068161395, now seen corresponding path program 1 times [2020-10-20 00:32:27,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:32:27,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235833267] [2020-10-20 00:32:27,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:32:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:32:27,699 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 00:32:27,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235833267] [2020-10-20 00:32:27,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:32:27,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:32:27,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625688732] [2020-10-20 00:32:27,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:32:27,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:32:27,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:32:27,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:27,718 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-10-20 00:32:27,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:32:27,743 INFO L93 Difference]: Finished difference Result 51 states and 75 transitions. [2020-10-20 00:32:27,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:32:27,745 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-20 00:32:27,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:32:27,758 INFO L225 Difference]: With dead ends: 51 [2020-10-20 00:32:27,759 INFO L226 Difference]: Without dead ends: 23 [2020-10-20 00:32:27,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:27,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-20 00:32:27,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-20 00:32:27,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-20 00:32:27,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2020-10-20 00:32:27,794 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 11 [2020-10-20 00:32:27,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:32:27,794 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2020-10-20 00:32:27,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:32:27,795 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2020-10-20 00:32:27,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:32:27,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:27,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:27,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:32:27,796 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:27,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:27,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1606884976, now seen corresponding path program 1 times [2020-10-20 00:32:27,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:32:27,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119650568] [2020-10-20 00:32:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:32:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:27,873 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:27,908 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:27,935 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:32:27,936 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:32:27,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:32:27,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:32:27 BoogieIcfgContainer [2020-10-20 00:32:27,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:32:27,972 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:32:27,973 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:32:27,974 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:32:27,975 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:27" (3/4) ... [2020-10-20 00:32:27,980 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:32:27,980 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:32:27,983 INFO L168 Benchmark]: Toolchain (without parser) took 1434.02 ms. Allocated memory was 39.3 MB in the beginning and 43.0 MB in the end (delta: 3.7 MB). Free memory was 17.3 MB in the beginning and 11.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 9.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:27,985 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 30.9 MB. Free memory was 7.2 MB in the beginning and 7.1 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:32:27,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.17 ms. Allocated memory was 39.3 MB in the beginning and 40.4 MB in the end (delta: 1.0 MB). Free memory was 16.4 MB in the beginning and 15.8 MB in the end (delta: 666.8 kB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:27,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.17 ms. Allocated memory is still 40.4 MB. Free memory was 15.8 MB in the beginning and 13.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:27,988 INFO L168 Benchmark]: Boogie Preprocessor took 31.54 ms. Allocated memory is still 40.4 MB. Free memory was 13.8 MB in the beginning and 12.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:27,989 INFO L168 Benchmark]: RCFGBuilder took 462.23 ms. Allocated memory was 40.4 MB in the beginning and 42.5 MB in the end (delta: 2.1 MB). Free memory was 11.9 MB in the beginning and 25.2 MB in the end (delta: -13.3 MB). Peak memory consumption was 4.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:27,990 INFO L168 Benchmark]: TraceAbstraction took 496.37 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 24.7 MB in the beginning and 12.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 13.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:27,991 INFO L168 Benchmark]: Witness Printer took 8.62 ms. Allocated memory is still 43.0 MB. Free memory was 12.0 MB in the beginning and 11.4 MB in the end (delta: 568.0 kB). Peak memory consumption was 568.0 kB. Max. memory is 14.3 GB. [2020-10-20 00:32:27,997 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 30.9 MB. Free memory was 7.2 MB in the beginning and 7.1 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 376.17 ms. Allocated memory was 39.3 MB in the beginning and 40.4 MB in the end (delta: 1.0 MB). Free memory was 16.4 MB in the beginning and 15.8 MB in the end (delta: 666.8 kB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 47.17 ms. Allocated memory is still 40.4 MB. Free memory was 15.8 MB in the beginning and 13.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 31.54 ms. Allocated memory is still 40.4 MB. Free memory was 13.8 MB in the beginning and 12.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 462.23 ms. Allocated memory was 40.4 MB in the beginning and 42.5 MB in the end (delta: 2.1 MB). Free memory was 11.9 MB in the beginning and 25.2 MB in the end (delta: -13.3 MB). Peak memory consumption was 4.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 496.37 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 24.7 MB in the beginning and 12.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 13.2 MB. Max. memory is 14.3 GB. * Witness Printer took 8.62 ms. Allocated memory is still 43.0 MB. Free memory was 12.0 MB in the beginning and 11.4 MB in the end (delta: 568.0 kB). Peak memory consumption was 568.0 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 36, overapproximation of someBinaryArithmeticDOUBLEoperation at line 76, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryDOUBLEComparisonOperation at line 17. Possible FailurePath: [L76] double x = 0.0 / 0.0; [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L29] COND TRUE exponent_less_1023 < 20 [L30] COND FALSE !(exponent_less_1023 < 0) [L36] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L37] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L38] return x; [L77] double res = round_double(x); [L17] return x != x; [L80] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1031.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 00:32:30,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:32:30,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:32:30,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:32:30,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:32:30,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:32:30,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:32:30,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:32:30,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:32:30,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:32:30,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:32:30,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:32:30,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:32:30,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:32:30,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:32:30,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:32:30,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:32:30,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:32:30,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:32:30,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:32:30,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:32:30,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:32:30,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:32:30,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:32:30,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:32:30,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:32:30,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:32:30,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:32:30,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:32:30,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:32:30,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:32:30,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:32:30,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:32:30,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:32:30,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:32:30,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:32:30,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:32:30,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:32:30,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:32:30,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:32:30,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:32:30,260 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:32:30,292 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:32:30,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:32:30,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:32:30,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:32:30,294 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:32:30,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:32:30,295 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:32:30,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:32:30,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:32:30,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:32:30,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:32:30,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:32:30,296 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:32:30,296 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:32:30,297 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:32:30,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:32:30,297 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:32:30,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:32:30,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:32:30,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:32:30,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:32:30,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:32:30,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:30,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:32:30,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:32:30,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:32:30,300 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:32:30,300 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:32:30,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:32:30,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:32:30,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:32:30,301 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 -> 2c4d19baf0429684b688f90d909ef640d9fb6537 [2020-10-20 00:32:30,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:32:30,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:32:30,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:32:30,532 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:32:30,533 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:32:30,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2020-10-20 00:32:30,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a6d19d3c/1b25b050861846a28ba53db186d92c8e/FLAGfaa566707 [2020-10-20 00:32:31,137 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:32:31,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2020-10-20 00:32:31,146 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a6d19d3c/1b25b050861846a28ba53db186d92c8e/FLAGfaa566707 [2020-10-20 00:32:31,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a6d19d3c/1b25b050861846a28ba53db186d92c8e [2020-10-20 00:32:31,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:32:31,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:32:31,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:31,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:32:31,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:32:31,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:31" (1/1) ... [2020-10-20 00:32:31,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@529e92e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:31, skipping insertion in model container [2020-10-20 00:32:31,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:31" (1/1) ... [2020-10-20 00:32:31,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:32:31,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:32:31,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:31,838 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:32:31,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:31,913 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:32:31,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:31 WrapperNode [2020-10-20 00:32:31,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:31,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:31,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:32:31,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:32:31,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:31" (1/1) ... [2020-10-20 00:32:31,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:31" (1/1) ... [2020-10-20 00:32:31,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:31,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:32:31,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:32:31,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:32:31,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:31" (1/1) ... [2020-10-20 00:32:31,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:31" (1/1) ... [2020-10-20 00:32:31,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:31" (1/1) ... [2020-10-20 00:32:31,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:31" (1/1) ... [2020-10-20 00:32:31,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:31" (1/1) ... [2020-10-20 00:32:31,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:31" (1/1) ... [2020-10-20 00:32:31,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:31" (1/1) ... [2020-10-20 00:32:31,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:32:31,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:32:31,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:32:31,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:32:32,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:31" (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 00:32:32,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-20 00:32:32,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:32:32,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:32:32,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:32:32,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:32:32,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:32:32,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:32:32,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:32:32,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:32:32,514 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:32:32,515 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-20 00:32:32,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:32 BoogieIcfgContainer [2020-10-20 00:32:32,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:32:32,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:32:32,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:32:32,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:32:32,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:32:31" (1/3) ... [2020-10-20 00:32:32,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410277ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:32, skipping insertion in model container [2020-10-20 00:32:32,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:31" (2/3) ... [2020-10-20 00:32:32,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410277ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:32, skipping insertion in model container [2020-10-20 00:32:32,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:32" (3/3) ... [2020-10-20 00:32:32,530 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2020-10-20 00:32:32,558 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:32:32,568 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:32:32,580 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:32:32,602 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:32:32,603 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:32:32,603 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:32:32,603 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:32:32,603 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:32:32,603 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:32:32,604 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:32:32,604 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:32:32,624 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-20 00:32:32,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:32:32,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:32,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:32,633 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:32,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:32,638 INFO L82 PathProgramCache]: Analyzing trace with hash 2068161395, now seen corresponding path program 1 times [2020-10-20 00:32:32,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:32:32,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385044203] [2020-10-20 00:32:32,649 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 00:32:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:32:32,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:32:32,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:32:32,782 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 00:32:32,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:32:32,788 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 00:32:32,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385044203] [2020-10-20 00:32:32,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:32:32,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:32:32,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6905387] [2020-10-20 00:32:32,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:32:32,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:32:32,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:32:32,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:32,817 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-10-20 00:32:32,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:32:32,835 INFO L93 Difference]: Finished difference Result 51 states and 75 transitions. [2020-10-20 00:32:32,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:32:32,836 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-20 00:32:32,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:32:32,847 INFO L225 Difference]: With dead ends: 51 [2020-10-20 00:32:32,847 INFO L226 Difference]: Without dead ends: 23 [2020-10-20 00:32:32,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:32,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-20 00:32:32,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-20 00:32:32,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-20 00:32:32,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2020-10-20 00:32:32,889 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 11 [2020-10-20 00:32:32,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:32:32,890 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2020-10-20 00:32:32,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:32:32,890 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2020-10-20 00:32:32,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:32:32,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:32,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:33,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:32:33,107 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:33,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:33,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1606884976, now seen corresponding path program 1 times [2020-10-20 00:32:33,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:32:33,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509163721] [2020-10-20 00:32:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 00:32:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:32:33,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 00:32:33,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:32:33,364 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 00:32:33,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:32:33,484 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 00:32:33,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509163721] [2020-10-20 00:32:33,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:32:33,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-10-20 00:32:33,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279012844] [2020-10-20 00:32:33,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 00:32:33,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:32:33,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 00:32:33,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:32:33,488 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand 10 states. [2020-10-20 00:32:34,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:32:34,143 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2020-10-20 00:32:34,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 00:32:34,144 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-10-20 00:32:34,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:32:34,145 INFO L225 Difference]: With dead ends: 28 [2020-10-20 00:32:34,145 INFO L226 Difference]: Without dead ends: 22 [2020-10-20 00:32:34,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-20 00:32:34,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-20 00:32:34,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-20 00:32:34,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-20 00:32:34,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-20 00:32:34,155 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2020-10-20 00:32:34,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:32:34,156 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-20 00:32:34,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 00:32:34,156 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-20 00:32:34,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 00:32:34,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:34,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:34,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:32:34,371 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:34,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:34,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1251020519, now seen corresponding path program 1 times [2020-10-20 00:32:34,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:32:34,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938557459] [2020-10-20 00:32:34,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-20 00:32:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:32:34,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 00:32:34,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:32:34,633 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 00:32:34,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:32:34,775 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 00:32:34,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938557459] [2020-10-20 00:32:34,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:32:34,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-20 00:32:34,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565041463] [2020-10-20 00:32:34,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 00:32:34,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:32:34,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 00:32:34,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:32:34,778 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 8 states. [2020-10-20 00:32:34,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:32:35,000 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-10-20 00:32:35,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:32:35,003 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-20 00:32:35,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:32:35,003 INFO L225 Difference]: With dead ends: 22 [2020-10-20 00:32:35,004 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:32:35,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:32:35,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:32:35,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:32:35,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:32:35,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:32:35,006 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-20 00:32:35,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:32:35,006 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:32:35,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 00:32:35,007 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:32:35,007 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:32:35,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 00:32:35,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:32:35,311 INFO L277 CegarLoopResult]: At program point L85(lines 68 86) the Hoare annotation is: true [2020-10-20 00:32:35,312 INFO L274 CegarLoopResult]: For program point L44(lines 44 47) no Hoare annotation was computed. [2020-10-20 00:32:35,312 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 00:32:35,312 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-20 00:32:35,312 INFO L270 CegarLoopResult]: At program point L65(lines 19 66) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) (not (fp.eq |ULTIMATE.start_round_double_#res| |ULTIMATE.start_round_double_#res|))) [2020-10-20 00:32:35,312 INFO L274 CegarLoopResult]: For program point L32(lines 32 33) no Hoare annotation was computed. [2020-10-20 00:32:35,312 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:32:35,313 INFO L274 CegarLoopResult]: For program point L32-2(lines 32 33) no Hoare annotation was computed. [2020-10-20 00:32:35,313 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:32:35,313 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:32:35,313 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 00:32:35,314 INFO L274 CegarLoopResult]: For program point L37(lines 37 38) no Hoare annotation was computed. [2020-10-20 00:32:35,314 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:32:35,314 INFO L274 CegarLoopResult]: For program point L29(lines 29 58) no Hoare annotation was computed. [2020-10-20 00:32:35,314 INFO L274 CegarLoopResult]: For program point L54(lines 54 55) no Hoare annotation was computed. [2020-10-20 00:32:35,314 INFO L274 CegarLoopResult]: For program point L54-2(lines 54 55) no Hoare annotation was computed. [2020-10-20 00:32:35,314 INFO L270 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) (not (fp.eq |ULTIMATE.start_round_double_#res| |ULTIMATE.start_round_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2020-10-20 00:32:35,314 INFO L274 CegarLoopResult]: For program point L30(lines 30 42) no Hoare annotation was computed. [2020-10-20 00:32:35,314 INFO L274 CegarLoopResult]: For program point L59(lines 59 64) no Hoare annotation was computed. [2020-10-20 00:32:35,315 INFO L274 CegarLoopResult]: For program point L59-1(lines 19 66) no Hoare annotation was computed. [2020-10-20 00:32:35,315 INFO L274 CegarLoopResult]: For program point L59-2(lines 59 64) no Hoare annotation was computed. [2020-10-20 00:32:35,315 INFO L274 CegarLoopResult]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2020-10-20 00:32:35,316 INFO L270 CegarLoopResult]: At program point L22-2(lines 22 27) the Hoare annotation is: (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) [2020-10-20 00:32:35,316 INFO L274 CegarLoopResult]: For program point L22-3(lines 22 27) no Hoare annotation was computed. [2020-10-20 00:32:35,316 INFO L274 CegarLoopResult]: For program point L51(lines 51 52) no Hoare annotation was computed. [2020-10-20 00:32:35,316 INFO L274 CegarLoopResult]: For program point L80(lines 80 83) no Hoare annotation was computed. [2020-10-20 00:32:35,316 INFO L274 CegarLoopResult]: For program point L43(lines 43 58) no Hoare annotation was computed. [2020-10-20 00:32:35,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:32:35 BoogieIcfgContainer [2020-10-20 00:32:35,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:32:35,338 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:32:35,338 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:32:35,339 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:32:35,339 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:32" (3/4) ... [2020-10-20 00:32:35,344 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:32:35,362 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-10-20 00:32:35,363 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-10-20 00:32:35,363 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 00:32:35,364 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:32:35,399 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result) [2020-10-20 00:32:35,401 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result [2020-10-20 00:32:35,444 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:32:35,444 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:32:35,446 INFO L168 Benchmark]: Toolchain (without parser) took 3965.93 ms. Allocated memory was 35.1 MB in the beginning and 50.9 MB in the end (delta: 15.7 MB). Free memory was 9.0 MB in the beginning and 26.1 MB in the end (delta: -17.1 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:32:35,447 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 35.1 MB. Free memory was 14.2 MB in the beginning and 14.1 MB in the end (delta: 47.2 kB). Peak memory consumption was 47.2 kB. Max. memory is 14.3 GB. [2020-10-20 00:32:35,448 INFO L168 Benchmark]: CACSL2BoogieTranslator took 428.89 ms. Allocated memory was 35.1 MB in the beginning and 44.6 MB in the end (delta: 9.4 MB). Free memory was 8.0 MB in the beginning and 25.2 MB in the end (delta: -17.2 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:35,448 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.06 ms. Allocated memory is still 44.6 MB. Free memory was 25.2 MB in the beginning and 23.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:35,449 INFO L168 Benchmark]: Boogie Preprocessor took 36.18 ms. Allocated memory is still 44.6 MB. Free memory was 23.2 MB in the beginning and 21.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:35,450 INFO L168 Benchmark]: RCFGBuilder took 518.58 ms. Allocated memory was 44.6 MB in the beginning and 47.2 MB in the end (delta: 2.6 MB). Free memory was 21.3 MB in the beginning and 15.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:35,450 INFO L168 Benchmark]: TraceAbstraction took 2819.31 ms. Allocated memory was 47.2 MB in the beginning and 50.9 MB in the end (delta: 3.7 MB). Free memory was 15.4 MB in the beginning and 30.4 MB in the end (delta: -15.0 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:35,451 INFO L168 Benchmark]: Witness Printer took 105.94 ms. Allocated memory is still 50.9 MB. Free memory was 30.4 MB in the beginning and 26.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:35,454 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 35.1 MB. Free memory was 14.2 MB in the beginning and 14.1 MB in the end (delta: 47.2 kB). Peak memory consumption was 47.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 428.89 ms. Allocated memory was 35.1 MB in the beginning and 44.6 MB in the end (delta: 9.4 MB). Free memory was 8.0 MB in the beginning and 25.2 MB in the end (delta: -17.2 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 47.06 ms. Allocated memory is still 44.6 MB. Free memory was 25.2 MB in the beginning and 23.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 36.18 ms. Allocated memory is still 44.6 MB. Free memory was 23.2 MB in the beginning and 21.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 518.58 ms. Allocated memory was 44.6 MB in the beginning and 47.2 MB in the end (delta: 2.6 MB). Free memory was 21.3 MB in the beginning and 15.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2819.31 ms. Allocated memory was 47.2 MB in the beginning and 50.9 MB in the end (delta: 3.7 MB). Free memory was 15.4 MB in the beginning and 30.4 MB in the end (delta: -15.0 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. * Witness Printer took 105.94 ms. Allocated memory is still 50.9 MB. Free memory was 30.4 MB in the beginning and 26.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 68]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 59 SDtfs, 28 SDslu, 124 SDs, 0 SdLazy, 54 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 26 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 70 ConstructedInterpolants, 12 QuantifiedInterpolants, 3121 SizeOfPredicates, 18 NumberOfNonLiveVariables, 155 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...