./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2880296f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072d.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 965a8d1f86759d0c7cab56eb22958b9f714cfb2b .......................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072d.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 965a8d1f86759d0c7cab56eb22958b9f714cfb2b ............................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-2880296 [2020-12-02 15:32:52,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 15:32:52,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 15:32:52,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 15:32:52,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 15:32:52,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 15:32:52,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 15:32:52,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 15:32:52,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 15:32:52,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 15:32:52,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 15:32:52,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 15:32:52,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 15:32:52,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 15:32:52,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 15:32:52,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 15:32:52,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 15:32:52,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 15:32:52,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 15:32:52,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 15:32:52,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 15:32:52,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 15:32:52,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 15:32:52,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 15:32:52,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 15:32:52,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 15:32:52,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 15:32:52,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 15:32:52,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 15:32:52,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 15:32:52,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 15:32:52,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 15:32:52,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 15:32:52,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 15:32:52,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 15:32:52,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 15:32:52,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 15:32:52,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 15:32:52,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 15:32:52,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 15:32:52,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 15:32:52,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 15:32:52,348 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 15:32:52,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 15:32:52,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 15:32:52,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 15:32:52,353 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 15:32:52,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 15:32:52,354 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 15:32:52,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 15:32:52,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 15:32:52,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 15:32:52,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 15:32:52,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 15:32:52,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 15:32:52,356 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 15:32:52,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 15:32:52,357 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 15:32:52,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 15:32:52,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 15:32:52,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 15:32:52,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 15:32:52,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 15:32:52,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:32:52,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 15:32:52,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 15:32:52,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 15:32:52,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 15:32:52,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 15:32:52,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 15:32:52,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 15:32:52,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 965a8d1f86759d0c7cab56eb22958b9f714cfb2b [2020-12-02 15:32:52,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 15:32:52,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 15:32:52,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 15:32:52,876 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 15:32:52,877 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 15:32:52,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c [2020-12-02 15:32:52,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6bb8a048/2116211f1b0946c2ab4d7135100e2737/FLAG0d3110c7a [2020-12-02 15:32:53,612 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 15:32:53,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c [2020-12-02 15:32:53,620 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6bb8a048/2116211f1b0946c2ab4d7135100e2737/FLAG0d3110c7a [2020-12-02 15:32:53,974 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6bb8a048/2116211f1b0946c2ab4d7135100e2737 [2020-12-02 15:32:53,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 15:32:53,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 15:32:53,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 15:32:53,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 15:32:53,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 15:32:53,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:32:53" (1/1) ... [2020-12-02 15:32:53,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347dd9b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:53, skipping insertion in model container [2020-12-02 15:32:53,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:32:53" (1/1) ... [2020-12-02 15:32:54,007 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 15:32:54,039 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 15:32:54,229 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c[2254,2267] [2020-12-02 15:32:54,233 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:32:54,242 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 15:32:54,279 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c[2254,2267] [2020-12-02 15:32:54,280 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:32:54,303 INFO L217 MainTranslator]: Completed translation [2020-12-02 15:32:54,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:54 WrapperNode [2020-12-02 15:32:54,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 15:32:54,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 15:32:54,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 15:32:54,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 15:32:54,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:54" (1/1) ... [2020-12-02 15:32:54,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:54" (1/1) ... [2020-12-02 15:32:54,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 15:32:54,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 15:32:54,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 15:32:54,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 15:32:54,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:54" (1/1) ... [2020-12-02 15:32:54,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:54" (1/1) ... [2020-12-02 15:32:54,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:54" (1/1) ... [2020-12-02 15:32:54,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:54" (1/1) ... [2020-12-02 15:32:54,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:54" (1/1) ... [2020-12-02 15:32:54,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:54" (1/1) ... [2020-12-02 15:32:54,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:54" (1/1) ... [2020-12-02 15:32:54,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 15:32:54,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 15:32:54,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 15:32:54,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 15:32:54,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:54" (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 [2020-12-02 15:32:54,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 15:32:54,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 15:32:54,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-02 15:32:54,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 15:32:54,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-02 15:32:54,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 15:32:54,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 15:32:54,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-02 15:32:54,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 15:32:55,295 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 15:32:55,295 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-02 15:32:55,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:55 BoogieIcfgContainer [2020-12-02 15:32:55,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 15:32:55,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 15:32:55,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 15:32:55,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 15:32:55,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:32:53" (1/3) ... [2020-12-02 15:32:55,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686cfbfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:32:55, skipping insertion in model container [2020-12-02 15:32:55,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:54" (2/3) ... [2020-12-02 15:32:55,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686cfbfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:32:55, skipping insertion in model container [2020-12-02 15:32:55,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:55" (3/3) ... [2020-12-02 15:32:55,310 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-12-02 15:32:55,332 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 15:32:55,337 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 15:32:55,353 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 15:32:55,384 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 15:32:55,385 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 15:32:55,385 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 15:32:55,385 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 15:32:55,385 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 15:32:55,386 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 15:32:55,386 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 15:32:55,386 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 15:32:55,403 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-12-02 15:32:55,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 15:32:55,411 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:32:55,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:32:55,412 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:32:55,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:32:55,420 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-12-02 15:32:55,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:32:55,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463190915] [2020-12-02 15:32:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:32:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:32:55,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:32:55,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463190915] [2020-12-02 15:32:55,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:32:55,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 15:32:55,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503022791] [2020-12-02 15:32:55,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 15:32:55,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 15:32:55,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 15:32:55,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:32:55,635 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-12-02 15:32:55,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:32:55,661 INFO L93 Difference]: Finished difference Result 52 states and 80 transitions. [2020-12-02 15:32:55,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 15:32:55,663 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-02 15:32:55,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:32:55,693 INFO L225 Difference]: With dead ends: 52 [2020-12-02 15:32:55,694 INFO L226 Difference]: Without dead ends: 24 [2020-12-02 15:32:55,702 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 [2020-12-02 15:32:55,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-02 15:32:55,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-02 15:32:55,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-02 15:32:55,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-12-02 15:32:55,751 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-12-02 15:32:55,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:32:55,751 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-12-02 15:32:55,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 15:32:55,752 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-12-02 15:32:55,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 15:32:55,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:32:55,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:32:55,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 15:32:55,754 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:32:55,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:32:55,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-12-02 15:32:55,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:32:55,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016737608] [2020-12-02 15:32:55,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:32:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:32:55,927 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:32:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:32:56,056 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:32:56,115 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 15:32:56,116 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 15:32:56,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 15:32:56,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:32:56 BoogieIcfgContainer [2020-12-02 15:32:56,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 15:32:56,183 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 15:32:56,183 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 15:32:56,184 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 15:32:56,185 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:55" (3/4) ... [2020-12-02 15:32:56,190 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 15:32:56,190 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 15:32:56,196 INFO L168 Benchmark]: Toolchain (without parser) took 2212.22 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 36.7 MB in the beginning and 35.9 MB in the end (delta: 859.4 kB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:56,198 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 41.9 MB. Free memory was 24.7 MB in the beginning and 24.7 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:32:56,199 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.80 ms. Allocated memory is still 50.3 MB. Free memory was 36.5 MB in the beginning and 25.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:56,201 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.96 ms. Allocated memory is still 50.3 MB. Free memory was 25.6 MB in the beginning and 23.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:56,202 INFO L168 Benchmark]: Boogie Preprocessor took 91.39 ms. Allocated memory is still 50.3 MB. Free memory was 23.7 MB in the beginning and 35.4 MB in the end (delta: -11.7 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:56,207 INFO L168 Benchmark]: RCFGBuilder took 801.61 ms. Allocated memory is still 50.3 MB. Free memory was 35.4 MB in the beginning and 26.9 MB in the end (delta: 8.5 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:56,210 INFO L168 Benchmark]: TraceAbstraction took 882.40 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.6 MB in the beginning and 36.2 MB in the end (delta: -9.6 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:56,211 INFO L168 Benchmark]: Witness Printer took 7.15 ms. Allocated memory is still 60.8 MB. Free memory was 36.2 MB in the beginning and 35.9 MB in the end (delta: 338.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:32:56,229 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 41.9 MB. Free memory was 24.7 MB in the beginning and 24.7 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 323.80 ms. Allocated memory is still 50.3 MB. Free memory was 36.5 MB in the beginning and 25.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.96 ms. Allocated memory is still 50.3 MB. Free memory was 25.6 MB in the beginning and 23.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 91.39 ms. Allocated memory is still 50.3 MB. Free memory was 23.7 MB in the beginning and 35.4 MB in the end (delta: -11.7 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 801.61 ms. Allocated memory is still 50.3 MB. Free memory was 35.4 MB in the beginning and 26.9 MB in the end (delta: 8.5 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 882.40 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.6 MB in the beginning and 36.2 MB in the end (delta: -9.6 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. * Witness Printer took 7.15 ms. Allocated memory is still 60.8 MB. Free memory was 36.2 MB in the beginning and 35.9 MB in the end (delta: 338.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticDOUBLE_SMToperation at line 51, overapproximation of bitwiseOr at line 74, overapproximation of bitwiseAnd at line 73. Possible FailurePath: [L86] double x = -1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L91] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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 0.2.0-2880296 [2020-12-02 15:32:58,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 15:32:58,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 15:32:59,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 15:32:59,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 15:32:59,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 15:32:59,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 15:32:59,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 15:32:59,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 15:32:59,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 15:32:59,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 15:32:59,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 15:32:59,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 15:32:59,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 15:32:59,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 15:32:59,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 15:32:59,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 15:32:59,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 15:32:59,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 15:32:59,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 15:32:59,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 15:32:59,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 15:32:59,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 15:32:59,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 15:32:59,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 15:32:59,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 15:32:59,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 15:32:59,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 15:32:59,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 15:32:59,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 15:32:59,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 15:32:59,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 15:32:59,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 15:32:59,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 15:32:59,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 15:32:59,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 15:32:59,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 15:32:59,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 15:32:59,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 15:32:59,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 15:32:59,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 15:32:59,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 15:32:59,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 15:32:59,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 15:32:59,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 15:32:59,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 15:32:59,184 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 15:32:59,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 15:32:59,184 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 15:32:59,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 15:32:59,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 15:32:59,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 15:32:59,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 15:32:59,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 15:32:59,185 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 15:32:59,185 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 15:32:59,186 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 15:32:59,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 15:32:59,186 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 15:32:59,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 15:32:59,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 15:32:59,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 15:32:59,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 15:32:59,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 15:32:59,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:32:59,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 15:32:59,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 15:32:59,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 15:32:59,188 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 15:32:59,188 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 15:32:59,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 15:32:59,188 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 15:32:59,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 15:32:59,189 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 965a8d1f86759d0c7cab56eb22958b9f714cfb2b [2020-12-02 15:32:59,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 15:32:59,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 15:32:59,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 15:32:59,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 15:32:59,613 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 15:32:59,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c [2020-12-02 15:32:59,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f729ea2df/4d9864c23be24acfb22b3223ab666db8/FLAGdaa2fe017 [2020-12-02 15:33:00,339 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 15:33:00,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c [2020-12-02 15:33:00,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f729ea2df/4d9864c23be24acfb22b3223ab666db8/FLAGdaa2fe017 [2020-12-02 15:33:00,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f729ea2df/4d9864c23be24acfb22b3223ab666db8 [2020-12-02 15:33:00,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 15:33:00,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 15:33:00,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 15:33:00,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 15:33:00,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 15:33:00,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:33:00" (1/1) ... [2020-12-02 15:33:00,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4500208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:00, skipping insertion in model container [2020-12-02 15:33:00,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:33:00" (1/1) ... [2020-12-02 15:33:00,720 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 15:33:00,740 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 15:33:00,982 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c[2254,2267] [2020-12-02 15:33:00,986 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:33:01,004 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 15:33:01,046 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c[2254,2267] [2020-12-02 15:33:01,047 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:33:01,073 INFO L217 MainTranslator]: Completed translation [2020-12-02 15:33:01,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:01 WrapperNode [2020-12-02 15:33:01,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 15:33:01,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 15:33:01,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 15:33:01,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 15:33:01,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:01" (1/1) ... [2020-12-02 15:33:01,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:01" (1/1) ... [2020-12-02 15:33:01,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 15:33:01,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 15:33:01,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 15:33:01,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 15:33:01,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:01" (1/1) ... [2020-12-02 15:33:01,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:01" (1/1) ... [2020-12-02 15:33:01,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:01" (1/1) ... [2020-12-02 15:33:01,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:01" (1/1) ... [2020-12-02 15:33:01,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:01" (1/1) ... [2020-12-02 15:33:01,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:01" (1/1) ... [2020-12-02 15:33:01,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:01" (1/1) ... [2020-12-02 15:33:01,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 15:33:01,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 15:33:01,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 15:33:01,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 15:33:01,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:01" (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 [2020-12-02 15:33:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-12-02 15:33:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-02 15:33:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-02 15:33:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 15:33:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 15:33:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-02 15:33:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 15:33:01,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 15:33:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-02 15:33:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 15:33:02,044 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 15:33:02,045 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-02 15:33:02,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:33:02 BoogieIcfgContainer [2020-12-02 15:33:02,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 15:33:02,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 15:33:02,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 15:33:02,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 15:33:02,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:33:00" (1/3) ... [2020-12-02 15:33:02,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581d1b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:33:02, skipping insertion in model container [2020-12-02 15:33:02,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:01" (2/3) ... [2020-12-02 15:33:02,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581d1b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:33:02, skipping insertion in model container [2020-12-02 15:33:02,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:33:02" (3/3) ... [2020-12-02 15:33:02,073 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-12-02 15:33:02,097 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 15:33:02,102 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 15:33:02,116 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 15:33:02,166 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 15:33:02,166 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 15:33:02,167 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 15:33:02,167 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 15:33:02,167 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 15:33:02,168 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 15:33:02,168 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 15:33:02,168 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 15:33:02,187 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-12-02 15:33:02,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 15:33:02,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:33:02,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:33:02,203 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:33:02,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:33:02,224 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-12-02 15:33:02,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:33:02,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767673737] [2020-12-02 15:33:02,245 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 [2020-12-02 15:33:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:33:03,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-02 15:33:03,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:33:03,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:33:03,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:33:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:33:03,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767673737] [2020-12-02 15:33:03,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:33:03,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-02 15:33:03,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236716382] [2020-12-02 15:33:03,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 15:33:03,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:33:03,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 15:33:03,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:33:03,409 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-12-02 15:33:03,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:33:03,426 INFO L93 Difference]: Finished difference Result 52 states and 80 transitions. [2020-12-02 15:33:03,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 15:33:03,431 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-02 15:33:03,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:33:03,444 INFO L225 Difference]: With dead ends: 52 [2020-12-02 15:33:03,445 INFO L226 Difference]: Without dead ends: 24 [2020-12-02 15:33:03,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:33:03,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-02 15:33:03,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-02 15:33:03,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-02 15:33:03,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-12-02 15:33:03,486 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-12-02 15:33:03,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:33:03,487 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-12-02 15:33:03,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 15:33:03,487 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-12-02 15:33:03,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 15:33:03,488 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:33:03,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:33:03,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 15:33:03,702 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:33:03,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:33:03,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-12-02 15:33:03,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:33:03,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028148808] [2020-12-02 15:33:03,707 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 [2020-12-02 15:33:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:33:04,963 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:33:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:33:06,091 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:33:06,220 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-02 15:33:06,220 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 15:33:06,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 15:33:06,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:33:06 BoogieIcfgContainer [2020-12-02 15:33:06,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 15:33:06,460 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 15:33:06,460 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 15:33:06,460 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 15:33:06,461 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:33:02" (3/4) ... [2020-12-02 15:33:06,463 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-02 15:33:06,553 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 15:33:06,555 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 15:33:06,565 INFO L168 Benchmark]: Toolchain (without parser) took 5872.48 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 27.1 MB in the beginning and 44.8 MB in the end (delta: -17.7 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:06,566 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 39.8 MB. Free memory was 17.7 MB in the beginning and 17.7 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:33:06,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.10 ms. Allocated memory is still 50.3 MB. Free memory was 26.9 MB in the beginning and 25.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:06,567 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.83 ms. Allocated memory is still 50.3 MB. Free memory was 25.7 MB in the beginning and 23.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:06,568 INFO L168 Benchmark]: Boogie Preprocessor took 57.31 ms. Allocated memory is still 50.3 MB. Free memory was 23.7 MB in the beginning and 33.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:06,568 INFO L168 Benchmark]: RCFGBuilder took 863.90 ms. Allocated memory is still 50.3 MB. Free memory was 33.6 MB in the beginning and 25.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:06,569 INFO L168 Benchmark]: TraceAbstraction took 4403.14 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 25.2 MB in the beginning and 24.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:06,570 INFO L168 Benchmark]: Witness Printer took 102.93 ms. Allocated memory is still 62.9 MB. Free memory was 24.1 MB in the beginning and 44.8 MB in the end (delta: -20.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:06,574 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 39.8 MB. Free memory was 17.7 MB in the beginning and 17.7 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 380.10 ms. Allocated memory is still 50.3 MB. Free memory was 26.9 MB in the beginning and 25.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.83 ms. Allocated memory is still 50.3 MB. Free memory was 25.7 MB in the beginning and 23.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.31 ms. Allocated memory is still 50.3 MB. Free memory was 23.7 MB in the beginning and 33.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 863.90 ms. Allocated memory is still 50.3 MB. Free memory was 33.6 MB in the beginning and 25.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4403.14 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 25.2 MB in the beginning and 24.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Witness Printer took 102.93 ms. Allocated memory is still 62.9 MB. Free memory was 24.1 MB in the beginning and 44.8 MB in the end (delta: -20.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 91]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L86] EXPR 1.0 [L86] EXPR -1.0 [L86] EXPR 0.0 [L86] EXPR -1.0 / 0.0 [L86] double x = -1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] EXPR x + x [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L91] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 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, 1.9s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 44 ConjunctsInSsa, 1 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 incorrect! Received shutdown request...