./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1210.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1210.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 6a2ce6cad1ff26c462bd542dafb3ac3798055daa .................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1210.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 6a2ce6cad1ff26c462bd542dafb3ac3798055daa ...................................................................................................................................................................................................................................................................................................................................................................................................................... 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-a4ecdab [2020-10-24 23:26:34,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:26:34,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:26:34,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:26:34,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:26:34,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:26:34,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:26:34,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:26:34,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:26:34,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:26:34,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:26:34,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:26:34,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:26:34,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:26:34,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:26:34,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:26:34,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:26:34,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:26:34,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:26:34,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:26:34,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:26:34,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:26:34,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:26:34,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:26:34,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:26:34,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:26:34,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:26:34,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:26:34,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:26:34,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:26:34,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:26:34,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:26:34,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:26:34,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:26:34,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:26:34,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:26:34,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:26:34,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:26:34,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:26:34,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:26:34,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:26:34,440 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 23:26:34,500 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:26:34,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:26:34,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:26:34,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:26:34,506 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:26:34,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:26:34,506 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:26:34,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 23:26:34,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:26:34,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:26:34,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:26:34,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:26:34,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:26:34,510 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:26:34,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:26:34,510 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:26:34,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:26:34,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:26:34,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:26:34,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:26:34,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:26:34,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:26:34,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:26:34,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:26:34,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:26:34,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 23:26:34,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 23:26:34,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:26:34,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:26:34,515 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a2ce6cad1ff26c462bd542dafb3ac3798055daa [2020-10-24 23:26:35,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:26:35,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:26:35,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:26:35,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:26:35,062 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:26:35,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-10-24 23:26:35,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e72a01de/a0d2a179c16f4064a49eb851386a5589/FLAGc2d60b9fc [2020-10-24 23:26:35,890 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:26:35,892 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-10-24 23:26:35,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e72a01de/a0d2a179c16f4064a49eb851386a5589/FLAGc2d60b9fc [2020-10-24 23:26:36,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e72a01de/a0d2a179c16f4064a49eb851386a5589 [2020-10-24 23:26:36,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:26:36,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:26:36,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:26:36,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:26:36,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:26:36,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:26:36" (1/1) ... [2020-10-24 23:26:36,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a01c4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:36, skipping insertion in model container [2020-10-24 23:26:36,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:26:36" (1/1) ... [2020-10-24 23:26:36,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:26:36,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:26:36,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:26:36,510 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:26:36,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:26:36,563 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:26:36,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:36 WrapperNode [2020-10-24 23:26:36,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:26:36,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:26:36,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:26:36,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:26:36,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:36" (1/1) ... [2020-10-24 23:26:36,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:36" (1/1) ... [2020-10-24 23:26:36,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:26:36,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:26:36,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:26:36,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:26:36,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:36" (1/1) ... [2020-10-24 23:26:36,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:36" (1/1) ... [2020-10-24 23:26:36,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:36" (1/1) ... [2020-10-24 23:26:36,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:36" (1/1) ... [2020-10-24 23:26:36,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:36" (1/1) ... [2020-10-24 23:26:36,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:36" (1/1) ... [2020-10-24 23:26:36,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:36" (1/1) ... [2020-10-24 23:26:36,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:26:36,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:26:36,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:26:36,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:26:36,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:26:36,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 23:26:36,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:26:36,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 23:26:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 23:26:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 23:26:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:26:36,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:26:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 23:26:36,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:26:37,537 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:26:37,538 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-24 23:26:37,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:26:37 BoogieIcfgContainer [2020-10-24 23:26:37,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:26:37,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:26:37,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:26:37,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:26:37,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:26:36" (1/3) ... [2020-10-24 23:26:37,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b389bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:26:37, skipping insertion in model container [2020-10-24 23:26:37,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:36" (2/3) ... [2020-10-24 23:26:37,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b389bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:26:37, skipping insertion in model container [2020-10-24 23:26:37,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:26:37" (3/3) ... [2020-10-24 23:26:37,552 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-10-24 23:26:37,569 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:26:37,578 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:26:37,596 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:26:37,658 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:26:37,659 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:26:37,659 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:26:37,659 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:26:37,660 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:26:37,660 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:26:37,660 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:26:37,660 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:26:37,681 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-24 23:26:37,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 23:26:37,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:26:37,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:26:37,693 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:26:37,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:26:37,703 INFO L82 PathProgramCache]: Analyzing trace with hash -556426464, now seen corresponding path program 1 times [2020-10-24 23:26:37,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:26:37,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453192810] [2020-10-24 23:26:37,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:26:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:26:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:26:37,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453192810] [2020-10-24 23:26:37,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:26:37,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 23:26:37,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987740223] [2020-10-24 23:26:37,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:26:37,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:26:37,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:26:37,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:26:37,909 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-10-24 23:26:37,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:26:37,937 INFO L93 Difference]: Finished difference Result 67 states and 103 transitions. [2020-10-24 23:26:37,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:26:37,939 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-24 23:26:37,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:26:37,952 INFO L225 Difference]: With dead ends: 67 [2020-10-24 23:26:37,952 INFO L226 Difference]: Without dead ends: 31 [2020-10-24 23:26:37,956 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 [2020-10-24 23:26:37,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-24 23:26:37,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-24 23:26:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 23:26:37,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-24 23:26:38,001 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2020-10-24 23:26:38,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:26:38,002 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-24 23:26:38,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:26:38,002 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-24 23:26:38,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 23:26:38,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:26:38,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:26:38,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 23:26:38,005 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:26:38,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:26:38,006 INFO L82 PathProgramCache]: Analyzing trace with hash -56818241, now seen corresponding path program 1 times [2020-10-24 23:26:38,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:26:38,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428176772] [2020-10-24 23:26:38,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:26:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:26:38,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:26:38,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428176772] [2020-10-24 23:26:38,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:26:38,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-24 23:26:38,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438154981] [2020-10-24 23:26:38,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 23:26:38,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:26:38,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 23:26:38,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 23:26:38,141 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 3 states. [2020-10-24 23:26:38,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:26:38,184 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-10-24 23:26:38,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 23:26:38,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-24 23:26:38,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:26:38,188 INFO L225 Difference]: With dead ends: 34 [2020-10-24 23:26:38,188 INFO L226 Difference]: Without dead ends: 31 [2020-10-24 23:26:38,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 23:26:38,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-24 23:26:38,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-24 23:26:38,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 23:26:38,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-10-24 23:26:38,197 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 15 [2020-10-24 23:26:38,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:26:38,198 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-10-24 23:26:38,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 23:26:38,198 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-10-24 23:26:38,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-24 23:26:38,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:26:38,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:26:38,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 23:26:38,200 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:26:38,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:26:38,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1761490312, now seen corresponding path program 1 times [2020-10-24 23:26:38,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:26:38,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928138059] [2020-10-24 23:26:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:26:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:26:38,299 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:26:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:26:38,390 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:26:38,419 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 23:26:38,419 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:26:38,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 23:26:38,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:26:38 BoogieIcfgContainer [2020-10-24 23:26:38,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:26:38,460 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:26:38,460 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:26:38,460 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:26:38,461 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:26:37" (3/4) ... [2020-10-24 23:26:38,464 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 23:26:38,465 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:26:38,467 INFO L168 Benchmark]: Toolchain (without parser) took 2230.38 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 25.8 MB in the beginning and 30.2 MB in the end (delta: -4.5 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2020-10-24 23:26:38,468 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 39.8 MB. Free memory was 26.4 MB in the beginning and 26.4 MB in the end (delta: 35.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:26:38,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.45 ms. Allocated memory is still 48.2 MB. Free memory was 25.2 MB in the beginning and 25.6 MB in the end (delta: -414.5 kB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-10-24 23:26:38,470 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.16 ms. Allocated memory is still 48.2 MB. Free memory was 25.4 MB in the beginning and 23.7 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:26:38,471 INFO L168 Benchmark]: Boogie Preprocessor took 39.08 ms. Allocated memory is still 48.2 MB. Free memory was 23.6 MB in the beginning and 22.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:26:38,472 INFO L168 Benchmark]: RCFGBuilder took 882.00 ms. Allocated memory is still 48.2 MB. Free memory was 21.8 MB in the beginning and 22.5 MB in the end (delta: -628.1 kB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:26:38,473 INFO L168 Benchmark]: TraceAbstraction took 916.71 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 22.1 MB in the beginning and 30.5 MB in the end (delta: -8.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-24 23:26:38,473 INFO L168 Benchmark]: Witness Printer took 4.59 ms. Allocated memory is still 60.8 MB. Free memory was 30.5 MB in the beginning and 30.2 MB in the end (delta: 305.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:26:38,478 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 39.8 MB. Free memory was 26.4 MB in the beginning and 26.4 MB in the end (delta: 35.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 322.45 ms. Allocated memory is still 48.2 MB. Free memory was 25.2 MB in the beginning and 25.6 MB in the end (delta: -414.5 kB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.16 ms. Allocated memory is still 48.2 MB. Free memory was 25.4 MB in the beginning and 23.7 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.08 ms. Allocated memory is still 48.2 MB. Free memory was 23.6 MB in the beginning and 22.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 882.00 ms. Allocated memory is still 48.2 MB. Free memory was 21.8 MB in the beginning and 22.5 MB in the end (delta: -628.1 kB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 916.71 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 22.1 MB in the beginning and 30.5 MB in the end (delta: -8.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.59 ms. Allocated memory is still 60.8 MB. Free memory was 30.5 MB in the beginning and 30.2 MB in the end (delta: 305.2 kB). There was no memory consumed. Max. memory is 16.1 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 someBinaryFLOATComparisonOperation at line 75, overapproximation of someBinaryArithmeticFLOAToperation at line 82, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L13] static const float one_modf = 1.0; VAL [one_modf=1] [L82] float x = 0.0f / 0.0f; [L83] float iptr; [L16] __int32_t i0, j0; [L17] __uint32_t i; VAL [one_modf=1] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [one_modf=1] [L24] COND TRUE j0 < 23 VAL [one_modf=1] [L25] COND TRUE j0 < 0 VAL [one_modf=1] [L27] ieee_float_shape_type sf_u; [L28] sf_u.word = (i0 & 0x80000000) [L29] EXPR sf_u.value [L29] (*iptr) = sf_u.value [L31] return x; VAL [one_modf=1] [L84] float res = modf_float(x, &iptr); [L87] EXPR \read(iptr) [L75] return x != x; VAL [one_modf=1] [L87] isnan_float(iptr) && !isnan_float(res) [L75] return x != x; VAL [one_modf=1] [L87] isnan_float(iptr) && !isnan_float(res) VAL [one_modf=1] [L87] COND TRUE isnan_float(iptr) && !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1210.c", 3, "reach_error") VAL [one_modf=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 71 SDtfs, 0 SDslu, 28 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-10-24 23:26:41,158 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-24 23:26:41,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:26:41,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:26:41,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:26:41,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:26:41,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:26:41,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:26:41,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:26:41,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:26:41,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:26:41,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:26:41,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:26:41,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 23:26:41,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:26:41,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:26:41,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:26:41,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:26:41,326 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:26:41,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:26:41,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:26:41,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:26:41,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:26:41,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:26:41,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:26:41,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:26:41,329 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 23:26:41,329 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 23:26:41,329 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:26:41,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:26:41,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:26:41,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:26:41,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:26:41,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:26:41,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:26:41,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:26:41,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:26:41,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:26:41,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:26:41,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:26:41,332 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 23:26:41,332 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 23:26:41,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:26:41,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:26:41,333 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 23:26:41,333 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a2ce6cad1ff26c462bd542dafb3ac3798055daa [2020-10-24 23:26:41,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:26:41,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:26:41,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:26:41,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:26:41,835 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:26:41,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-10-24 23:26:41,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed6d2c32b/62ffa2137be94a83b1c16fe32061946c/FLAG2eda46280 [2020-10-24 23:26:42,636 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:26:42,637 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-10-24 23:26:42,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed6d2c32b/62ffa2137be94a83b1c16fe32061946c/FLAG2eda46280 [2020-10-24 23:26:42,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed6d2c32b/62ffa2137be94a83b1c16fe32061946c [2020-10-24 23:26:42,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:26:42,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:26:42,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:26:42,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:26:42,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:26:42,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:26:42" (1/1) ... [2020-10-24 23:26:42,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a854a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:42, skipping insertion in model container [2020-10-24 23:26:42,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:26:42" (1/1) ... [2020-10-24 23:26:42,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:26:42,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:26:43,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:26:43,246 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:26:43,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:26:43,320 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:26:43,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:43 WrapperNode [2020-10-24 23:26:43,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:26:43,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:26:43,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:26:43,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:26:43,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:43" (1/1) ... [2020-10-24 23:26:43,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:43" (1/1) ... [2020-10-24 23:26:43,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:26:43,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:26:43,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:26:43,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:26:43,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:43" (1/1) ... [2020-10-24 23:26:43,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:43" (1/1) ... [2020-10-24 23:26:43,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:43" (1/1) ... [2020-10-24 23:26:43,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:43" (1/1) ... [2020-10-24 23:26:43,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:43" (1/1) ... [2020-10-24 23:26:43,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:43" (1/1) ... [2020-10-24 23:26:43,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:43" (1/1) ... [2020-10-24 23:26:43,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:26:43,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:26:43,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:26:43,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:26:43,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:26:43,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 23:26:43,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:26:43,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-10-24 23:26:43,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 23:26:43,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:26:43,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:26:43,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-24 23:26:43,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-24 23:26:43,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:26:44,352 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:26:44,353 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-24 23:26:44,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:26:44 BoogieIcfgContainer [2020-10-24 23:26:44,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:26:44,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:26:44,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:26:44,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:26:44,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:26:42" (1/3) ... [2020-10-24 23:26:44,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ea09cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:26:44, skipping insertion in model container [2020-10-24 23:26:44,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:26:43" (2/3) ... [2020-10-24 23:26:44,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ea09cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:26:44, skipping insertion in model container [2020-10-24 23:26:44,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:26:44" (3/3) ... [2020-10-24 23:26:44,371 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-10-24 23:26:44,391 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:26:44,397 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:26:44,413 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:26:44,465 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:26:44,466 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:26:44,466 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:26:44,466 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:26:44,467 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:26:44,467 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:26:44,467 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:26:44,467 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:26:44,489 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-24 23:26:44,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 23:26:44,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:26:44,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:26:44,499 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:26:44,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:26:44,508 INFO L82 PathProgramCache]: Analyzing trace with hash -556426464, now seen corresponding path program 1 times [2020-10-24 23:26:44,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:26:44,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872807381] [2020-10-24 23:26:44,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 23:26:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:26:44,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 23:26:44,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:26:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:26:44,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:26:44,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:26:44,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872807381] [2020-10-24 23:26:44,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:26:44,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 23:26:44,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011389689] [2020-10-24 23:26:44,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:26:44,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:26:44,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:26:44,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:26:44,869 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-10-24 23:26:44,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:26:44,892 INFO L93 Difference]: Finished difference Result 67 states and 103 transitions. [2020-10-24 23:26:44,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:26:44,894 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-24 23:26:44,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:26:44,906 INFO L225 Difference]: With dead ends: 67 [2020-10-24 23:26:44,907 INFO L226 Difference]: Without dead ends: 31 [2020-10-24 23:26:44,911 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 [2020-10-24 23:26:44,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-24 23:26:44,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-24 23:26:44,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 23:26:44,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-24 23:26:44,959 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2020-10-24 23:26:44,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:26:44,960 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-24 23:26:44,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:26:44,960 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-24 23:26:44,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 23:26:44,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:26:44,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:26:45,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 23:26:45,176 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:26:45,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:26:45,178 INFO L82 PathProgramCache]: Analyzing trace with hash -56818241, now seen corresponding path program 1 times [2020-10-24 23:26:45,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:26:45,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909013415] [2020-10-24 23:26:45,180 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 [2020-10-24 23:26:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:26:45,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 23:26:45,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:26:45,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:26:45,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:26:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:26:45,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909013415] [2020-10-24 23:26:45,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:26:45,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-24 23:26:45,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980444699] [2020-10-24 23:26:45,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 23:26:45,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:26:45,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 23:26:45,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-24 23:26:45,618 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 8 states. [2020-10-24 23:26:45,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:26:45,981 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-10-24 23:26:45,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 23:26:45,983 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-24 23:26:45,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:26:45,984 INFO L225 Difference]: With dead ends: 38 [2020-10-24 23:26:45,984 INFO L226 Difference]: Without dead ends: 18 [2020-10-24 23:26:45,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-24 23:26:45,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-24 23:26:45,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-24 23:26:45,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-24 23:26:45,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-10-24 23:26:45,991 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2020-10-24 23:26:45,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:26:45,992 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-10-24 23:26:45,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 23:26:45,992 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-10-24 23:26:45,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-24 23:26:45,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:26:45,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:26:46,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 23:26:46,207 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:26:46,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:26:46,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1951048762, now seen corresponding path program 1 times [2020-10-24 23:26:46,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:26:46,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828903077] [2020-10-24 23:26:46,211 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 [2020-10-24 23:26:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:26:46,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-24 23:26:46,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:26:46,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:26:46,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:26:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:26:46,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828903077] [2020-10-24 23:26:46,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:26:46,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-24 23:26:46,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521924506] [2020-10-24 23:26:46,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 23:26:46,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:26:46,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 23:26:46,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 23:26:46,469 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 3 states. [2020-10-24 23:26:46,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:26:46,492 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-10-24 23:26:46,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 23:26:46,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-24 23:26:46,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:26:46,494 INFO L225 Difference]: With dead ends: 21 [2020-10-24 23:26:46,494 INFO L226 Difference]: Without dead ends: 18 [2020-10-24 23:26:46,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 23:26:46,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-24 23:26:46,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-24 23:26:46,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-24 23:26:46,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-10-24 23:26:46,501 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2020-10-24 23:26:46,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:26:46,501 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-10-24 23:26:46,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 23:26:46,502 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-10-24 23:26:46,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-24 23:26:46,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:26:46,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:26:46,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 23:26:46,707 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:26:46,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:26:46,708 INFO L82 PathProgramCache]: Analyzing trace with hash 352844637, now seen corresponding path program 1 times [2020-10-24 23:26:46,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:26:46,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462881183] [2020-10-24 23:26:46,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-24 23:26:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:26:46,952 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:26:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:26:47,163 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:26:47,247 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 23:26:47,247 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:26:47,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-24 23:26:47,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:26:47 BoogieIcfgContainer [2020-10-24 23:26:47,521 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:26:47,522 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:26:47,522 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:26:47,522 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:26:47,523 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:26:44" (3/4) ... [2020-10-24 23:26:47,526 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 23:26:47,650 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 23:26:47,652 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:26:47,658 INFO L168 Benchmark]: Toolchain (without parser) took 4743.00 ms. Allocated memory was 46.1 MB in the beginning and 65.0 MB in the end (delta: 18.9 MB). Free memory was 30.2 MB in the beginning and 41.4 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:26:47,660 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 37.7 MB. Free memory is still 20.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:26:47,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.94 ms. Allocated memory is still 46.1 MB. Free memory was 29.6 MB in the beginning and 29.6 MB in the end (delta: 31.1 kB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2020-10-24 23:26:47,664 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.86 ms. Allocated memory is still 46.1 MB. Free memory was 29.6 MB in the beginning and 27.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:26:47,667 INFO L168 Benchmark]: Boogie Preprocessor took 81.90 ms. Allocated memory is still 46.1 MB. Free memory was 27.7 MB in the beginning and 25.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:26:47,667 INFO L168 Benchmark]: RCFGBuilder took 866.89 ms. Allocated memory is still 46.1 MB. Free memory was 25.8 MB in the beginning and 22.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-10-24 23:26:47,668 INFO L168 Benchmark]: TraceAbstraction took 3164.29 ms. Allocated memory was 46.1 MB in the beginning and 65.0 MB in the end (delta: 18.9 MB). Free memory was 21.9 MB in the beginning and 43.9 MB in the end (delta: -22.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-10-24 23:26:47,671 INFO L168 Benchmark]: Witness Printer took 132.16 ms. Allocated memory is still 65.0 MB. Free memory was 43.9 MB in the beginning and 41.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:26:47,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 37.7 MB. Free memory is still 20.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 400.94 ms. Allocated memory is still 46.1 MB. Free memory was 29.6 MB in the beginning and 29.6 MB in the end (delta: 31.1 kB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.86 ms. Allocated memory is still 46.1 MB. Free memory was 29.6 MB in the beginning and 27.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.90 ms. Allocated memory is still 46.1 MB. Free memory was 27.7 MB in the beginning and 25.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 866.89 ms. Allocated memory is still 46.1 MB. Free memory was 25.8 MB in the beginning and 22.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3164.29 ms. Allocated memory was 46.1 MB in the beginning and 65.0 MB in the end (delta: 18.9 MB). Free memory was 21.9 MB in the beginning and 43.9 MB in the end (delta: -22.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * Witness Printer took 132.16 ms. Allocated memory is still 65.0 MB. Free memory was 43.9 MB in the beginning and 41.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] static const float one_modf = 1.0; VAL [one_modf=1.0] [L82] float x = 0.0f / 0.0f; [L83] float iptr; [L16] __int32_t i0, j0; [L17] __uint32_t i; VAL [one_modf=1.0] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [one_modf=1.0] [L24] COND FALSE !(j0 < 23) [L58] __uint32_t ix; [L59] *iptr = x * one_modf VAL [one_modf=1.0] [L61] ieee_float_shape_type gf_u; [L62] gf_u.value = (x) [L63] EXPR gf_u.word [L63] (ix) = gf_u.word [L66] ieee_float_shape_type sf_u; [L67] sf_u.word = (ix & 0x80000000) [L68] EXPR sf_u.value [L68] (x) = sf_u.value [L70] return x; VAL [one_modf=1.0] [L84] float res = modf_float(x, &iptr); [L87] EXPR \read(iptr) [L75] return x != x; VAL [one_modf=1.0] [L87] isnan_float(iptr) && !isnan_float(res) [L75] return x != x; VAL [one_modf=1.0] [L87] isnan_float(iptr) && !isnan_float(res) VAL [one_modf=1.0] [L87] COND TRUE isnan_float(iptr) && !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1210.c", 3, "reach_error") VAL [one_modf=1.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 46 SDslu, 34 SDs, 0 SdLazy, 17 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 82 ConstructedInterpolants, 5 QuantifiedInterpolants, 2476 SizeOfPredicates, 8 NumberOfNonLiveVariables, 204 ConjunctsInSsa, 11 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 incorrect! Received shutdown request...