./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/float_req_bl_1210_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/float_req_bl_1210_false-unreach-call.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36fce2ac9d239f0bf9286aa317af7b50704c65b6 .......................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/float_req_bl_1210_false-unreach-call.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36fce2ac9d239f0bf9286aa317af7b50704c65b6 ..................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-91b1670 [2018-11-28 18:05:05,426 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:05:05,428 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:05:05,448 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:05:05,449 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:05:05,450 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:05:05,452 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:05:05,454 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:05:05,457 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:05:05,458 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:05:05,458 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:05:05,459 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:05:05,460 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:05:05,461 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:05:05,462 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:05:05,462 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:05:05,463 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:05:05,465 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:05:05,470 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:05:05,472 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:05:05,473 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:05:05,480 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:05:05,486 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:05:05,486 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:05:05,486 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:05:05,487 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:05:05,490 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:05:05,491 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:05:05,492 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:05:05,495 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:05:05,496 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:05:05,497 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:05:05,497 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:05:05,497 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:05:05,500 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:05:05,500 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:05:05,501 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:05:05,530 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:05:05,533 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:05:05,534 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:05:05,534 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:05:05,534 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:05:05,536 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:05:05,536 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:05:05,536 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:05:05,536 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:05:05,536 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:05:05,537 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:05:05,538 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:05:05,538 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:05:05,538 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:05:05,538 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:05:05,538 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:05:05,538 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:05:05,538 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:05:05,539 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:05:05,539 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:05:05,539 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:05:05,539 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:05:05,539 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:05:05,539 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:05:05,542 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:05:05,542 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:05:05,542 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:05:05,542 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:05:05,542 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:05:05,542 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:05:05,543 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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(__VERIFIER_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 -> 36fce2ac9d239f0bf9286aa317af7b50704c65b6 [2018-11-28 18:05:05,579 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:05:05,594 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:05:05,603 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:05:05,604 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:05:05,605 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:05:05,607 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1210_false-unreach-call.c [2018-11-28 18:05:05,670 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be6e33e4c/39d1e9031d2a44149010c105aeedd148/FLAG21689e74c [2018-11-28 18:05:06,088 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:05:06,088 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1210_false-unreach-call.c [2018-11-28 18:05:06,097 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be6e33e4c/39d1e9031d2a44149010c105aeedd148/FLAG21689e74c [2018-11-28 18:05:06,468 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be6e33e4c/39d1e9031d2a44149010c105aeedd148 [2018-11-28 18:05:06,474 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:05:06,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:05:06,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:06,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:05:06,483 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:05:06,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:06" (1/1) ... [2018-11-28 18:05:06,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b859982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06, skipping insertion in model container [2018-11-28 18:05:06,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:06" (1/1) ... [2018-11-28 18:05:06,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:05:06,528 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:05:06,815 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:06,834 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:05:06,900 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:06,928 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:05:06,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06 WrapperNode [2018-11-28 18:05:06,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:06,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:06,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:05:06,929 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:05:06,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (1/1) ... [2018-11-28 18:05:06,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (1/1) ... [2018-11-28 18:05:06,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:06,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:05:06,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:05:06,967 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:05:06,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (1/1) ... [2018-11-28 18:05:06,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (1/1) ... [2018-11-28 18:05:06,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (1/1) ... [2018-11-28 18:05:06,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (1/1) ... [2018-11-28 18:05:06,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (1/1) ... [2018-11-28 18:05:07,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (1/1) ... [2018-11-28 18:05:07,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (1/1) ... [2018-11-28 18:05:07,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:05:07,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:05:07,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:05:07,092 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:05:07,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (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 [2018-11-28 18:05:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-28 18:05:07,175 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-28 18:05:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-28 18:05:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 18:05:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:05:07,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:05:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 18:05:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:05:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:05:07,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:05:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:05:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:05:07,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:05:07,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:05:07,181 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2018-11-28 18:05:07,182 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2018-11-28 18:05:07,882 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:05:07,882 INFO L280 CfgBuilder]: Removed 14 assue(true) statements. [2018-11-28 18:05:07,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:07 BoogieIcfgContainer [2018-11-28 18:05:07,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:05:07,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:05:07,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:05:07,888 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:05:07,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:05:06" (1/3) ... [2018-11-28 18:05:07,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656b037e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:07, skipping insertion in model container [2018-11-28 18:05:07,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (2/3) ... [2018-11-28 18:05:07,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656b037e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:07, skipping insertion in model container [2018-11-28 18:05:07,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:07" (3/3) ... [2018-11-28 18:05:07,894 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210_false-unreach-call.c [2018-11-28 18:05:07,904 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:05:07,911 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:05:07,927 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:05:07,960 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:05:07,961 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:05:07,961 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:05:07,961 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:05:07,961 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:05:07,962 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:05:07,962 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:05:07,962 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:05:07,962 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:05:07,984 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-11-28 18:05:07,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 18:05:07,991 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:07,992 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:07,995 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:08,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:08,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1399428577, now seen corresponding path program 1 times [2018-11-28 18:05:08,002 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:08,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:08,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:08,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:08,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:08,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:08,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:08,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:05:08,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:05:08,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:05:08,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:05:08,185 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2018-11-28 18:05:08,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:08,213 INFO L93 Difference]: Finished difference Result 88 states and 126 transitions. [2018-11-28 18:05:08,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:05:08,214 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-11-28 18:05:08,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:08,226 INFO L225 Difference]: With dead ends: 88 [2018-11-28 18:05:08,226 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 18:05:08,230 INFO L631 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 [2018-11-28 18:05:08,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 18:05:08,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-28 18:05:08,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 18:05:08,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2018-11-28 18:05:08,281 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 25 [2018-11-28 18:05:08,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:08,282 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2018-11-28 18:05:08,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:05:08,282 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2018-11-28 18:05:08,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-28 18:05:08,284 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:08,285 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:08,285 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:08,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:08,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1932138526, now seen corresponding path program 1 times [2018-11-28 18:05:08,286 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:08,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:08,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:08,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:08,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:08,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:08,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 18:05:08,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 18:05:08,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 18:05:08,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:05:08,442 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 3 states. [2018-11-28 18:05:08,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:08,473 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-11-28 18:05:08,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 18:05:08,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-11-28 18:05:08,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:08,475 INFO L225 Difference]: With dead ends: 47 [2018-11-28 18:05:08,476 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 18:05:08,477 INFO L631 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 [2018-11-28 18:05:08,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 18:05:08,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-28 18:05:08,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 18:05:08,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-11-28 18:05:08,485 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 27 [2018-11-28 18:05:08,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:08,487 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-11-28 18:05:08,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 18:05:08,488 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-11-28 18:05:08,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 18:05:08,489 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:08,489 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:08,490 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:08,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:08,490 INFO L82 PathProgramCache]: Analyzing trace with hash -425385736, now seen corresponding path program 1 times [2018-11-28 18:05:08,490 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:08,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:08,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:08,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:08,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:08,594 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:05:08,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:05:08 BoogieIcfgContainer [2018-11-28 18:05:08,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:05:08,641 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:05:08,641 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:05:08,641 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:05:08,643 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:07" (3/4) ... [2018-11-28 18:05:08,648 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 18:05:08,648 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:05:08,650 INFO L168 Benchmark]: Toolchain (without parser) took 2174.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 951.3 MB in the beginning and 1.0 GB in the end (delta: -88.2 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:08,652 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:08,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.30 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:08,654 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.37 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:08,654 INFO L168 Benchmark]: Boogie Preprocessor took 119.72 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -170.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:08,657 INFO L168 Benchmark]: RCFGBuilder took 791.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:08,658 INFO L168 Benchmark]: TraceAbstraction took 756.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:08,658 INFO L168 Benchmark]: Witness Printer took 7.26 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:08,665 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 451.30 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.37 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 119.72 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -170.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 791.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 756.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. * Witness Printer took 7.26 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 86]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 73, overapproximation of someBinaryArithmeticFLOAToperation at line 80, overapproximation of bitwiseAnd at line 26. Possible FailurePath: [L11] static const float one_modf = 1.0; VAL [\old(one_modf)=6442450950, one_modf=1] [L80] float x = 0.0f / 0.0f; [L81] float iptr; VAL [iptr={6442450955:0}, one_modf=1] [L82] CALL, EXPR modf_float(x, &iptr) VAL [\old(x)=6442450947, iptr={6442450955:0}, one_modf=1] [L14] __int32_t i0, j0; [L15] __uint32_t i; VAL [\old(x)=6442450947, iptr={6442450955:0}, iptr={6442450955:0}, one_modf=1, x=6442450947] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [\old(x)=6442450947, i0=-2147483648, iptr={6442450955:0}, iptr={6442450955:0}, one_modf=1, x=6442450947] [L22] COND TRUE j0 < 23 VAL [\old(x)=6442450947, i0=-2147483648, iptr={6442450955:0}, iptr={6442450955:0}, j0=-1, one_modf=1, x=6442450947] [L23] COND TRUE j0 < 0 VAL [\old(x)=6442450947, i0=-2147483648, iptr={6442450955:0}, iptr={6442450955:0}, j0=-1, one_modf=1, x=6442450947] [L25] ieee_float_shape_type sf_u; [L26] sf_u.word = (i0 & 0x80000000) [L27] EXPR sf_u.value [L27] (*iptr) = sf_u.value [L29] return x; VAL [\old(x)=6442450947, \result=6442450947, i0=-2147483648, iptr={6442450955:0}, iptr={6442450955:0}, j0=-1, one_modf=1, x=6442450947] [L82] RET, EXPR modf_float(x, &iptr) VAL [iptr={6442450955:0}, modf_float(x, &iptr)=6442450947, one_modf=1, x=6442450947] [L82] float res = modf_float(x, &iptr); [L85] EXPR \read(iptr) VAL [\read(iptr)=6442450954, iptr={6442450955:0}, one_modf=1, res=6442450947, x=6442450947] [L85] CALL, EXPR isnan_float(iptr) VAL [\old(x)=6442450954, one_modf=1] [L73] return x != x; VAL [\old(x)=6442450954, \result=1, one_modf=1, x=6442450954] [L85] RET, EXPR isnan_float(iptr) VAL [\read(iptr)=6442450954, iptr={6442450955:0}, isnan_float(iptr)=1, one_modf=1, res=6442450947, x=6442450947] [L85] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=6442450954, iptr={6442450955:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, one_modf=1, res=6442450947, x=6442450947] [L85] CALL, EXPR isnan_float(res) VAL [\old(x)=6442450947, one_modf=1] [L73] return x != x; VAL [\old(x)=6442450947, \result=0, one_modf=1, x=6442450947] [L85] RET, EXPR isnan_float(res) VAL [\read(iptr)=6442450954, iptr={6442450955:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=6442450947, x=6442450947] [L85] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=6442450954, iptr={6442450955:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=6442450947, x=6442450947] [L85] COND TRUE isnan_float(iptr) && !isnan_float(res) [L86] __VERIFIER_error() VAL [iptr={6442450955:0}, one_modf=1, res=6442450947, x=6442450947] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 1 error locations. UNSAFE Result, 0.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 100 SDtfs, 0 SDslu, 43 SDs, 0 SdLazy, 4 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=48occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 1278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-91b1670 [2018-11-28 18:05:11,051 INFO L170 SettingsManager]: Resetting all preferences to default values... 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[2018-11-28 18:05:11,095 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:05:11,095 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:05:11,096 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:05:11,098 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:05:11,099 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:05:11,100 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:05:11,101 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:05:11,102 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:05:11,103 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:05:11,103 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:05:11,103 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:05:11,105 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:05:11,105 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:05:11,106 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 18:05:11,134 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:05:11,134 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:05:11,137 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:05:11,138 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:05:11,138 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:05:11,139 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:05:11,139 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:05:11,139 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:05:11,143 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:05:11,143 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:05:11,143 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:05:11,143 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:05:11,143 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:05:11,144 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:05:11,144 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 18:05:11,144 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 18:05:11,144 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:05:11,144 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:05:11,144 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:05:11,145 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:05:11,145 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:05:11,145 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:05:11,145 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:05:11,145 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:05:11,146 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:05:11,147 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:05:11,147 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:05:11,147 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:05:11,147 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 18:05:11,148 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:05:11,148 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 18:05:11,148 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 18:05:11,148 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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(__VERIFIER_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 -> 36fce2ac9d239f0bf9286aa317af7b50704c65b6 [2018-11-28 18:05:11,189 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:05:11,205 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:05:11,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:05:11,211 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:05:11,211 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:05:11,212 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1210_false-unreach-call.c [2018-11-28 18:05:11,272 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20edf712/922e582d95e74c9ca62f52b24011c73b/FLAGbd4eaf939 [2018-11-28 18:05:11,713 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:05:11,714 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1210_false-unreach-call.c [2018-11-28 18:05:11,722 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20edf712/922e582d95e74c9ca62f52b24011c73b/FLAGbd4eaf939 [2018-11-28 18:05:12,058 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20edf712/922e582d95e74c9ca62f52b24011c73b [2018-11-28 18:05:12,062 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:05:12,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:05:12,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:12,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:05:12,075 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:05:12,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:12,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4741da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12, skipping insertion in model container [2018-11-28 18:05:12,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:12,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:05:12,117 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:05:12,396 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:12,424 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:05:12,482 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:12,505 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:05:12,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12 WrapperNode [2018-11-28 18:05:12,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:12,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:12,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:05:12,507 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:05:12,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:12,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:12,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:12,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:05:12,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:05:12,543 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:05:12,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:12,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:12,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:12,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:12,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:12,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:12,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (1/1) ... [2018-11-28 18:05:12,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:05:12,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:05:12,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:05:12,593 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:05:12,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (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 [2018-11-28 18:05:12,726 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-11-28 18:05:12,726 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-11-28 18:05:12,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:05:12,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:05:12,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:05:12,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 18:05:12,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:05:12,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:05:12,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-28 18:05:12,728 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:05:12,728 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:05:12,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-28 18:05:12,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-28 18:05:12,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:05:12,731 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2018-11-28 18:05:12,731 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2018-11-28 18:05:13,165 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:05:13,240 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:05:13,256 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:05:13,380 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:05:13,406 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:05:13,435 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:05:13,490 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:05:13,498 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:05:13,499 INFO L280 CfgBuilder]: Removed 14 assue(true) statements. [2018-11-28 18:05:13,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:13 BoogieIcfgContainer [2018-11-28 18:05:13,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:05:13,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:05:13,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:05:13,505 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:05:13,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:05:12" (1/3) ... [2018-11-28 18:05:13,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257092a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:13, skipping insertion in model container [2018-11-28 18:05:13,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:12" (2/3) ... [2018-11-28 18:05:13,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257092a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:13, skipping insertion in model container [2018-11-28 18:05:13,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:13" (3/3) ... [2018-11-28 18:05:13,509 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210_false-unreach-call.c [2018-11-28 18:05:13,520 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:05:13,529 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:05:13,548 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:05:13,583 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:05:13,583 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:05:13,584 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:05:13,584 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:05:13,584 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:05:13,584 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:05:13,584 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:05:13,584 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:05:13,584 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:05:13,604 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-11-28 18:05:13,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 18:05:13,611 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:13,612 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:13,615 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:13,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:13,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1399428577, now seen corresponding path program 1 times [2018-11-28 18:05:13,625 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:13,626 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-11-28 18:05:13,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:13,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:13,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:13,811 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:13,830 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:13,831 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:05:13,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:05:13,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:05:13,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:05:13,855 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2018-11-28 18:05:13,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:13,884 INFO L93 Difference]: Finished difference Result 88 states and 126 transitions. [2018-11-28 18:05:13,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:05:13,886 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-11-28 18:05:13,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:13,898 INFO L225 Difference]: With dead ends: 88 [2018-11-28 18:05:13,898 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 18:05:13,902 INFO L631 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 [2018-11-28 18:05:13,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 18:05:13,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-28 18:05:13,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 18:05:13,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2018-11-28 18:05:13,949 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 25 [2018-11-28 18:05:13,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:13,950 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2018-11-28 18:05:13,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:05:13,950 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2018-11-28 18:05:13,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-28 18:05:13,953 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:13,953 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:13,953 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:13,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:13,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1932138526, now seen corresponding path program 1 times [2018-11-28 18:05:13,955 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:13,955 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-11-28 18:05:13,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:14,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:14,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:14,296 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:14,319 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:14,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 18:05:14,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 18:05:14,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 18:05:14,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:05:14,322 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 7 states. [2018-11-28 18:05:14,839 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-28 18:05:15,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:15,766 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2018-11-28 18:05:15,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 18:05:15,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-11-28 18:05:15,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:15,770 INFO L225 Difference]: With dead ends: 60 [2018-11-28 18:05:15,771 INFO L226 Difference]: Without dead ends: 31 [2018-11-28 18:05:15,772 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:05:15,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-28 18:05:15,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-28 18:05:15,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-28 18:05:15,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-11-28 18:05:15,780 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2018-11-28 18:05:15,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:15,780 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-11-28 18:05:15,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 18:05:15,781 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-11-28 18:05:15,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-28 18:05:15,782 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:15,782 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:15,782 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:15,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:15,783 INFO L82 PathProgramCache]: Analyzing trace with hash -2040204428, now seen corresponding path program 1 times [2018-11-28 18:05:15,784 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:15,784 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-11-28 18:05:15,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:15,926 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:15,939 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:15,954 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:15,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 18:05:15,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 18:05:15,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 18:05:15,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:05:15,956 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 3 states. [2018-11-28 18:05:15,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:15,981 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-11-28 18:05:15,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 18:05:15,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-11-28 18:05:15,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:15,983 INFO L225 Difference]: With dead ends: 34 [2018-11-28 18:05:15,983 INFO L226 Difference]: Without dead ends: 31 [2018-11-28 18:05:15,984 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 18:05:15,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-28 18:05:15,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-28 18:05:15,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-28 18:05:15,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-11-28 18:05:15,991 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-11-28 18:05:15,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:15,994 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-11-28 18:05:15,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 18:05:15,994 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-11-28 18:05:15,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 18:05:15,995 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:15,995 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:15,996 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:15,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:15,996 INFO L82 PathProgramCache]: Analyzing trace with hash 263973730, now seen corresponding path program 1 times [2018-11-28 18:05:15,997 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:15,997 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-11-28 18:05:16,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:16,442 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:05:16,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:05:16 BoogieIcfgContainer [2018-11-28 18:05:16,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:05:16,532 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:05:16,532 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:05:16,533 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:05:16,533 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:13" (3/4) ... [2018-11-28 18:05:16,537 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 18:05:16,630 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:05:16,630 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:05:16,631 INFO L168 Benchmark]: Toolchain (without parser) took 4568.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 946.0 MB in the beginning and 995.2 MB in the end (delta: -49.2 MB). Peak memory consumption was 83.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:16,633 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:16,633 INFO L168 Benchmark]: CACSL2BoogieTranslator took 441.25 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 929.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:16,634 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.82 ms. Allocated memory is still 1.0 GB. Free memory is still 929.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:16,634 INFO L168 Benchmark]: Boogie Preprocessor took 49.59 ms. Allocated memory is still 1.0 GB. Free memory is still 929.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:16,635 INFO L168 Benchmark]: RCFGBuilder took 906.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -164.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:16,636 INFO L168 Benchmark]: TraceAbstraction took 3031.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 92.7 MB). Peak memory consumption was 92.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:16,636 INFO L168 Benchmark]: Witness Printer took 98.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 995.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:16,641 INFO L336 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 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 441.25 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 929.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.82 ms. Allocated memory is still 1.0 GB. Free memory is still 929.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.59 ms. Allocated memory is still 1.0 GB. Free memory is still 929.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 906.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -164.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3031.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 92.7 MB). Peak memory consumption was 92.7 MB. Max. memory is 11.5 GB. * Witness Printer took 98.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 995.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 86]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] static const float one_modf = 1.0; VAL [\old(one_modf)=0.000000000000000000000000000000000000000000007006492321624085, one_modf=1.0] [L80] float x = 0.0f / 0.0f; [L81] float iptr; VAL [iptr={2:0}, one_modf=1.0, x=NaN] [L82] CALL, EXPR modf_float(x, &iptr) VAL [\old(x)=NaN, iptr={2:0}, one_modf=1.0] [L14] __int32_t i0, j0; [L15] __uint32_t i; VAL [\old(x)=NaN, iptr={2:0}, iptr={2:0}, one_modf=1.0, x=NaN] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [\old(x)=NaN, i0=2143289344, iptr={2:0}, iptr={2:0}, j0=128, one_modf=1.0, x=NaN] [L22] COND FALSE !(j0 < 23) [L56] __uint32_t ix; [L57] *iptr = x * one_modf VAL [\old(x)=NaN, i0=2143289344, iptr={2:0}, iptr={2:0}, j0=128, one_modf=1.0, x=NaN] [L59] ieee_float_shape_type gf_u; [L60] gf_u.value = (x) [L61] EXPR gf_u.word [L61] (ix) = gf_u.word [L64] ieee_float_shape_type sf_u; [L65] sf_u.word = (ix & 0x80000000) [L66] EXPR sf_u.value [L66] (x) = sf_u.value [L68] return x; VAL [\old(x)=NaN, \result=0.0, i0=2143289344, iptr={2:0}, iptr={2:0}, ix=2143289344, j0=128, one_modf=1.0, x=0.0] [L82] RET, EXPR modf_float(x, &iptr) VAL [iptr={2:0}, modf_float(x, &iptr)=0.0, one_modf=1.0, x=NaN] [L82] float res = modf_float(x, &iptr); [L85] EXPR \read(iptr) VAL [\read(iptr)=NaN, iptr={2:0}, one_modf=1.0, res=0.0, x=NaN] [L85] CALL, EXPR isnan_float(iptr) VAL [\old(x)=NaN, one_modf=1.0] [L73] return x != x; VAL [\old(x)=NaN, \result=1, one_modf=1.0, x=NaN] [L85] RET, EXPR isnan_float(iptr) VAL [\read(iptr)=NaN, iptr={2:0}, isnan_float(iptr)=1, one_modf=1.0, res=0.0, x=NaN] [L85] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=NaN, iptr={2:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, one_modf=1.0, res=0.0, x=NaN] [L85] CALL, EXPR isnan_float(res) VAL [\old(x)=0.0, one_modf=1.0] [L73] return x != x; VAL [\old(x)=0.0, \result=0, one_modf=1.0, x=0.0] [L85] RET, EXPR isnan_float(res) VAL [\read(iptr)=NaN, iptr={2:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1.0, res=0.0, x=NaN] [L85] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=NaN, iptr={2:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1.0, res=0.0, x=NaN] [L85] COND TRUE isnan_float(iptr) && !isnan_float(res) [L86] __VERIFIER_error() VAL [iptr={2:0}, one_modf=1.0, res=0.0, x=NaN] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 1 error locations. UNSAFE Result, 2.9s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 117 SDtfs, 87 SDslu, 137 SDs, 0 SdLazy, 53 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 77 ConstructedInterpolants, 7 QuantifiedInterpolants, 6064 SizeOfPredicates, 4 NumberOfNonLiveVariables, 232 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...