./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 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/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 0.1.25-9a8b2e8 [2020-10-20 00:40:07,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:40:07,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:40:07,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:40:07,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:40:07,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:40:07,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:40:07,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:40:07,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:40:07,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:40:07,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:40:07,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:40:07,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:40:07,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:40:07,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:40:07,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:40:07,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:40:07,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:40:07,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:40:07,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:40:07,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:40:07,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:40:07,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:40:07,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:40:07,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:40:07,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:40:07,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:40:07,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:40:07,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:40:07,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:40:07,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:40:07,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:40:07,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:40:07,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:40:07,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:40:07,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:40:07,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:40:07,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:40:07,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:40:07,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:40:07,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:40:07,716 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:40:07,737 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:40:07,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:40:07,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:40:07,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:40:07,739 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:40:07,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:40:07,740 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:40:07,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:40:07,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:40:07,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:40:07,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:40:07,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:40:07,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:40:07,742 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:40:07,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:40:07,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:40:07,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:40:07,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:40:07,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:40:07,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:40:07,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:40:07,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:40:07,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:40:07,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:40:07,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:40:07,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:40:07,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:40:07,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:40:07,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:40:07,746 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a2ce6cad1ff26c462bd542dafb3ac3798055daa [2020-10-20 00:40:07,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:40:07,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:40:07,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:40:07,961 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:40:07,961 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:40:07,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-10-20 00:40:08,024 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/add1ae38c/5dbfa8fcef074e15b6cc60ad33e04302/FLAG07b0ae211 [2020-10-20 00:40:08,509 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:40:08,510 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-10-20 00:40:08,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/add1ae38c/5dbfa8fcef074e15b6cc60ad33e04302/FLAG07b0ae211 [2020-10-20 00:40:08,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/add1ae38c/5dbfa8fcef074e15b6cc60ad33e04302 [2020-10-20 00:40:08,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:40:08,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:40:08,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:40:08,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:40:08,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:40:08,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:40:08" (1/1) ... [2020-10-20 00:40:08,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b1c7622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:08, skipping insertion in model container [2020-10-20 00:40:08,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:40:08" (1/1) ... [2020-10-20 00:40:08,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:40:08,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:40:09,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:40:09,186 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:40:09,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:40:09,238 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:40:09,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:09 WrapperNode [2020-10-20 00:40:09,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:40:09,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:40:09,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:40:09,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:40:09,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:09" (1/1) ... [2020-10-20 00:40:09,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:09" (1/1) ... [2020-10-20 00:40:09,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:40:09,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:40:09,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:40:09,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:40:09,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:09" (1/1) ... [2020-10-20 00:40:09,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:09" (1/1) ... [2020-10-20 00:40:09,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:09" (1/1) ... [2020-10-20 00:40:09,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:09" (1/1) ... [2020-10-20 00:40:09,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:09" (1/1) ... [2020-10-20 00:40:09,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:09" (1/1) ... [2020-10-20 00:40:09,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:09" (1/1) ... [2020-10-20 00:40:09,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:40:09,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:40:09,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:40:09,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:40:09,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:40:09,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:40:09,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:40:09,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:40:09,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:40:09,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:40:09,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:40:09,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:40:09,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:40:09,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:40:09,818 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:40:09,819 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-20 00:40:09,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:40:09 BoogieIcfgContainer [2020-10-20 00:40:09,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:40:09,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:40:09,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:40:09,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:40:09,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:40:08" (1/3) ... [2020-10-20 00:40:09,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e442d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:40:09, skipping insertion in model container [2020-10-20 00:40:09,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:09" (2/3) ... [2020-10-20 00:40:09,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e442d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:40:09, skipping insertion in model container [2020-10-20 00:40:09,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:40:09" (3/3) ... [2020-10-20 00:40:09,858 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-10-20 00:40:09,890 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:40:09,901 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:40:09,912 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:40:09,934 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:40:09,934 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:40:09,934 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:40:09,934 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:40:09,935 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:40:09,935 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:40:09,935 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:40:09,935 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:40:09,951 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-20 00:40:09,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:40:09,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:40:09,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:40:09,959 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:40:09,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:40:09,964 INFO L82 PathProgramCache]: Analyzing trace with hash -556426464, now seen corresponding path program 1 times [2020-10-20 00:40:09,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:40:09,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283156505] [2020-10-20 00:40:09,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:40:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:40:10,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:40:10,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283156505] [2020-10-20 00:40:10,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:40:10,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:40:10,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891129048] [2020-10-20 00:40:10,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:40:10,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:40:10,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:40:10,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:40:10,140 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-10-20 00:40:10,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:40:10,159 INFO L93 Difference]: Finished difference Result 67 states and 103 transitions. [2020-10-20 00:40:10,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:40:10,161 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-20 00:40:10,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:40:10,182 INFO L225 Difference]: With dead ends: 67 [2020-10-20 00:40:10,182 INFO L226 Difference]: Without dead ends: 31 [2020-10-20 00:40:10,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:40:10,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-20 00:40:10,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-20 00:40:10,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 00:40:10,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-20 00:40:10,222 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2020-10-20 00:40:10,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:40:10,222 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-20 00:40:10,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:40:10,223 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-20 00:40:10,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 00:40:10,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:40:10,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:40:10,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:40:10,224 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:40:10,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:40:10,225 INFO L82 PathProgramCache]: Analyzing trace with hash -56818241, now seen corresponding path program 1 times [2020-10-20 00:40:10,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:40:10,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908019596] [2020-10-20 00:40:10,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:40:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:40:10,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:40:10,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908019596] [2020-10-20 00:40:10,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:40:10,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:40:10,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757727991] [2020-10-20 00:40:10,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:40:10,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:40:10,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:40:10,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:40:10,319 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 3 states. [2020-10-20 00:40:10,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:40:10,342 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-10-20 00:40:10,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:40:10,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-20 00:40:10,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:40:10,344 INFO L225 Difference]: With dead ends: 34 [2020-10-20 00:40:10,344 INFO L226 Difference]: Without dead ends: 31 [2020-10-20 00:40:10,345 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 [2020-10-20 00:40:10,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-20 00:40:10,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-20 00:40:10,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 00:40:10,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-10-20 00:40:10,351 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 15 [2020-10-20 00:40:10,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:40:10,351 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-10-20 00:40:10,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:40:10,352 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-10-20 00:40:10,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 00:40:10,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:40:10,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:40:10,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:40:10,353 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:40:10,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:40:10,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1761490312, now seen corresponding path program 1 times [2020-10-20 00:40:10,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:40:10,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017384271] [2020-10-20 00:40:10,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:40:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:40:10,422 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:40:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:40:10,519 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:40:10,569 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:40:10,577 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:40:10,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 00:40:10,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:40:10 BoogieIcfgContainer [2020-10-20 00:40:10,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:40:10,623 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:40:10,624 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:40:10,624 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:40:10,625 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:40:09" (3/4) ... [2020-10-20 00:40:10,628 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:40:10,628 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:40:10,631 INFO L168 Benchmark]: Toolchain (without parser) took 1772.80 ms. Allocated memory was 34.6 MB in the beginning and 48.8 MB in the end (delta: 14.2 MB). Free memory was 6.3 MB in the beginning and 27.4 MB in the end (delta: -21.1 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:40:10,632 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 34.1 MB. Free memory was 11.0 MB in the beginning and 10.9 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. [2020-10-20 00:40:10,633 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.14 ms. Allocated memory was 37.2 MB in the beginning and 45.1 MB in the end (delta: 7.9 MB). Free memory was 18.8 MB in the beginning and 26.0 MB in the end (delta: -7.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:40:10,633 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.82 ms. Allocated memory is still 45.1 MB. Free memory was 26.0 MB in the beginning and 23.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:40:10,634 INFO L168 Benchmark]: Boogie Preprocessor took 37.68 ms. Allocated memory is still 45.1 MB. Free memory was 23.9 MB in the beginning and 22.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:40:10,635 INFO L168 Benchmark]: RCFGBuilder took 491.36 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 21.9 MB in the beginning and 28.4 MB in the end (delta: -6.5 MB). Peak memory consumption was 11.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:40:10,637 INFO L168 Benchmark]: TraceAbstraction took 785.64 ms. Allocated memory was 46.7 MB in the beginning and 48.8 MB in the end (delta: 2.1 MB). Free memory was 27.9 MB in the beginning and 27.8 MB in the end (delta: 79.0 kB). Peak memory consumption was 20.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:40:10,637 INFO L168 Benchmark]: Witness Printer took 4.56 ms. Allocated memory is still 48.8 MB. Free memory was 27.8 MB in the beginning and 27.4 MB in the end (delta: 336.8 kB). Peak memory consumption was 336.8 kB. Max. memory is 14.3 GB. [2020-10-20 00:40:10,644 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 34.1 MB. Free memory was 11.0 MB in the beginning and 10.9 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 364.14 ms. Allocated memory was 37.2 MB in the beginning and 45.1 MB in the end (delta: 7.9 MB). Free memory was 18.8 MB in the beginning and 26.0 MB in the end (delta: -7.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 52.82 ms. Allocated memory is still 45.1 MB. Free memory was 26.0 MB in the beginning and 23.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 37.68 ms. Allocated memory is still 45.1 MB. Free memory was 23.9 MB in the beginning and 22.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 491.36 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 21.9 MB in the beginning and 28.4 MB in the end (delta: -6.5 MB). Peak memory consumption was 11.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 785.64 ms. Allocated memory was 46.7 MB in the beginning and 48.8 MB in the end (delta: 2.1 MB). Free memory was 27.9 MB in the beginning and 27.8 MB in the end (delta: 79.0 kB). Peak memory consumption was 20.6 MB. Max. memory is 14.3 GB. * Witness Printer took 4.56 ms. Allocated memory is still 48.8 MB. Free memory was 27.8 MB in the beginning and 27.4 MB in the end (delta: 336.8 kB). Peak memory consumption was 336.8 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of 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: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, 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, 0.0s 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 0.1.25-9a8b2e8 [2020-10-20 00:40:12,953 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-20 00:40:13,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:40:13,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:40:13,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:40:13,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:40:13,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:40:13,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:40:13,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:40:13,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:40:13,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:40:13,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:40:13,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:40:13,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:40:13,135 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:40:13,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:40:13,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:40:13,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:40:13,140 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:40:13,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:40:13,140 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:40:13,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:40:13,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:40:13,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:40:13,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:40:13,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:40:13,143 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:40:13,143 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:40:13,144 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:40:13,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:40:13,144 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:40:13,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:40:13,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:40:13,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:40:13,147 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:40:13,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:40:13,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:40:13,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:40:13,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:40:13,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:40:13,152 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:40:13,152 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:40:13,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:40:13,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:40:13,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:40:13,153 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a2ce6cad1ff26c462bd542dafb3ac3798055daa [2020-10-20 00:40:13,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:40:13,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:40:13,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:40:13,399 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:40:13,400 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:40:13,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-10-20 00:40:13,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8718a2fb5/6ab6b987426f4b71945952ca1bc8815d/FLAG7c655f0c3 [2020-10-20 00:40:14,031 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:40:14,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-10-20 00:40:14,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8718a2fb5/6ab6b987426f4b71945952ca1bc8815d/FLAG7c655f0c3 [2020-10-20 00:40:14,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8718a2fb5/6ab6b987426f4b71945952ca1bc8815d [2020-10-20 00:40:14,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:40:14,427 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:40:14,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:40:14,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:40:14,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:40:14,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:40:14" (1/1) ... [2020-10-20 00:40:14,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64b17495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:14, skipping insertion in model container [2020-10-20 00:40:14,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:40:14" (1/1) ... [2020-10-20 00:40:14,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:40:14,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:40:14,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:40:14,700 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:40:14,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:40:14,756 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:40:14,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:14 WrapperNode [2020-10-20 00:40:14,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:40:14,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:40:14,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:40:14,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:40:14,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:14" (1/1) ... [2020-10-20 00:40:14,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:14" (1/1) ... [2020-10-20 00:40:14,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:40:14,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:40:14,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:40:14,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:40:14,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:14" (1/1) ... [2020-10-20 00:40:14,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:14" (1/1) ... [2020-10-20 00:40:14,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:14" (1/1) ... [2020-10-20 00:40:14,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:14" (1/1) ... [2020-10-20 00:40:14,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:14" (1/1) ... [2020-10-20 00:40:14,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:14" (1/1) ... [2020-10-20 00:40:14,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:14" (1/1) ... [2020-10-20 00:40:14,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:40:14,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:40:14,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:40:14,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:40:14,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:40:14,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:40:14,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:40:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-10-20 00:40:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:40:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:40:14,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:40:14,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-20 00:40:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:40:14,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:40:15,512 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:40:15,512 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-20 00:40:15,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:40:15 BoogieIcfgContainer [2020-10-20 00:40:15,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:40:15,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:40:15,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:40:15,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:40:15,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:40:14" (1/3) ... [2020-10-20 00:40:15,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67bf14b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:40:15, skipping insertion in model container [2020-10-20 00:40:15,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:40:14" (2/3) ... [2020-10-20 00:40:15,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67bf14b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:40:15, skipping insertion in model container [2020-10-20 00:40:15,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:40:15" (3/3) ... [2020-10-20 00:40:15,523 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-10-20 00:40:15,534 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:40:15,541 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:40:15,553 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:40:15,574 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:40:15,581 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:40:15,581 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:40:15,582 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:40:15,582 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:40:15,582 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:40:15,582 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:40:15,583 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:40:15,597 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-20 00:40:15,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:40:15,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:40:15,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:40:15,605 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:40:15,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:40:15,609 INFO L82 PathProgramCache]: Analyzing trace with hash -556426464, now seen corresponding path program 1 times [2020-10-20 00:40:15,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:40:15,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54874397] [2020-10-20 00:40:15,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 00:40:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:40:15,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:40:15,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:40:15,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:40:15,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:40:15,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:40:15,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54874397] [2020-10-20 00:40:15,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:40:15,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:40:15,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121581662] [2020-10-20 00:40:15,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:40:15,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:40:15,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:40:15,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:40:15,844 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-10-20 00:40:15,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:40:15,875 INFO L93 Difference]: Finished difference Result 67 states and 103 transitions. [2020-10-20 00:40:15,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:40:15,876 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-20 00:40:15,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:40:15,888 INFO L225 Difference]: With dead ends: 67 [2020-10-20 00:40:15,889 INFO L226 Difference]: Without dead ends: 31 [2020-10-20 00:40:15,892 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 [2020-10-20 00:40:15,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-20 00:40:15,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-20 00:40:15,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 00:40:15,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-20 00:40:15,932 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2020-10-20 00:40:15,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:40:15,932 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-20 00:40:15,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:40:15,933 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-20 00:40:15,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 00:40:15,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:40:15,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:40:16,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:40:16,148 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:40:16,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:40:16,149 INFO L82 PathProgramCache]: Analyzing trace with hash -56818241, now seen corresponding path program 1 times [2020-10-20 00:40:16,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:40:16,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897752212] [2020-10-20 00:40:16,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 00:40:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:40:16,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 00:40:16,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:40:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:40:16,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:40:16,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:40:16,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897752212] [2020-10-20 00:40:16,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:40:16,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-20 00:40:16,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746671000] [2020-10-20 00:40:16,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 00:40:16,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:40:16,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 00:40:16,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:40:16,516 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 8 states. [2020-10-20 00:40:16,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:40:16,925 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-10-20 00:40:16,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 00:40:16,926 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-20 00:40:16,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:40:16,927 INFO L225 Difference]: With dead ends: 38 [2020-10-20 00:40:16,928 INFO L226 Difference]: Without dead ends: 18 [2020-10-20 00:40:16,929 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 [2020-10-20 00:40:16,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-20 00:40:16,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-20 00:40:16,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 00:40:16,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-10-20 00:40:16,935 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2020-10-20 00:40:16,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:40:16,936 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-10-20 00:40:16,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 00:40:16,936 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-10-20 00:40:16,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 00:40:16,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:40:16,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:40:17,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:40:17,149 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:40:17,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:40:17,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1951048762, now seen corresponding path program 1 times [2020-10-20 00:40:17,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:40:17,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680200227] [2020-10-20 00:40:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-20 00:40:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:40:17,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 00:40:17,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:40:17,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:40:17,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:40:17,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:40:17,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680200227] [2020-10-20 00:40:17,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:40:17,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 00:40:17,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881753111] [2020-10-20 00:40:17,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:40:17,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:40:17,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:40:17,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:40:17,348 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 3 states. [2020-10-20 00:40:17,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:40:17,375 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-10-20 00:40:17,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:40:17,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-20 00:40:17,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:40:17,377 INFO L225 Difference]: With dead ends: 21 [2020-10-20 00:40:17,377 INFO L226 Difference]: Without dead ends: 18 [2020-10-20 00:40:17,378 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 [2020-10-20 00:40:17,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-20 00:40:17,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-20 00:40:17,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 00:40:17,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-10-20 00:40:17,390 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2020-10-20 00:40:17,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:40:17,401 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-10-20 00:40:17,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:40:17,401 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-10-20 00:40:17,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 00:40:17,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:40:17,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:40:17,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 00:40:17,619 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:40:17,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:40:17,620 INFO L82 PathProgramCache]: Analyzing trace with hash 352844637, now seen corresponding path program 1 times [2020-10-20 00:40:17,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:40:17,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664892810] [2020-10-20 00:40:17,622 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 [2020-10-20 00:40:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:40:17,888 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:40:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:40:18,193 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:40:18,261 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 00:40:18,261 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:40:18,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 00:40:18,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:40:18 BoogieIcfgContainer [2020-10-20 00:40:18,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:40:18,525 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:40:18,525 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:40:18,525 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:40:18,526 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:40:15" (3/4) ... [2020-10-20 00:40:18,530 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:40:18,603 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:40:18,604 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:40:18,610 INFO L168 Benchmark]: Toolchain (without parser) took 4186.67 ms. Allocated memory was 40.4 MB in the beginning and 48.8 MB in the end (delta: 8.4 MB). Free memory was 18.1 MB in the beginning and 26.0 MB in the end (delta: -7.9 MB). Peak memory consumption was 460.5 kB. Max. memory is 14.3 GB. [2020-10-20 00:40:18,611 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 30.9 MB. Free memory was 17.1 MB in the beginning and 17.0 MB in the end (delta: 35.1 kB). Peak memory consumption was 35.1 kB. Max. memory is 14.3 GB. [2020-10-20 00:40:18,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.44 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.3 MB in the beginning and 14.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:40:18,615 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.92 ms. Allocated memory is still 41.4 MB. Free memory was 14.1 MB in the beginning and 11.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:40:18,616 INFO L168 Benchmark]: Boogie Preprocessor took 72.19 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 11.9 MB in the beginning and 25.7 MB in the end (delta: -13.7 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:40:18,619 INFO L168 Benchmark]: RCFGBuilder took 630.46 ms. Allocated memory is still 43.5 MB. Free memory was 25.7 MB in the beginning and 14.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 15.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:40:18,620 INFO L168 Benchmark]: TraceAbstraction took 3009.07 ms. Allocated memory was 43.5 MB in the beginning and 48.8 MB in the end (delta: 5.2 MB). Free memory was 13.9 MB in the beginning and 29.0 MB in the end (delta: -15.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:40:18,621 INFO L168 Benchmark]: Witness Printer took 78.84 ms. Allocated memory is still 48.8 MB. Free memory was 29.0 MB in the beginning and 26.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:40:18,628 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 30.9 MB. Free memory was 17.1 MB in the beginning and 17.0 MB in the end (delta: 35.1 kB). Peak memory consumption was 35.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 328.44 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.3 MB in the beginning and 14.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 53.92 ms. Allocated memory is still 41.4 MB. Free memory was 14.1 MB in the beginning and 11.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 72.19 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 11.9 MB in the beginning and 25.7 MB in the end (delta: -13.7 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 630.46 ms. Allocated memory is still 43.5 MB. Free memory was 25.7 MB in the beginning and 14.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 15.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3009.07 ms. Allocated memory was 43.5 MB in the beginning and 48.8 MB in the end (delta: 5.2 MB). Free memory was 13.9 MB in the beginning and 29.0 MB in the end (delta: -15.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. * Witness Printer took 78.84 ms. Allocated memory is still 48.8 MB. Free memory was 29.0 MB in the beginning and 26.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 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: 2.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.5s, 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, 0.2s 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, 0.3s 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...