./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1121a.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 b1ef2080ffd97f82ac51854e7d9813eba864fd0a ......................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1121a.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 b1ef2080ffd97f82ac51854e7d9813eba864fd0a ........................................................................................................................................................................................................................................................................................................................................................................... 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 00:32:58,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:32:58,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:32:59,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:32:59,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:32:59,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:32:59,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:32:59,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:32:59,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:32:59,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:32:59,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:32:59,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:32:59,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:32:59,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:32:59,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:32:59,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:32:59,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:32:59,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:32:59,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:32:59,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:32:59,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:32:59,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:32:59,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:32:59,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:32:59,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:32:59,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:32:59,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:32:59,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:32:59,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:32:59,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:32:59,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:32:59,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:32:59,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:32:59,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:32:59,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:32:59,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:32:59,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:32:59,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:32:59,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:32:59,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:32:59,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:32:59,089 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:32:59,132 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:32:59,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:32:59,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:32:59,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:32:59,135 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:32:59,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:32:59,135 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:32:59,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:32:59,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:32:59,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:32:59,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:32:59,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:32:59,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:32:59,138 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:32:59,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:32:59,138 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:32:59,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:32:59,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:32:59,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:32:59,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:32:59,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:32:59,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:59,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:32:59,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:32:59,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:32:59,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:32:59,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:32:59,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:32:59,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:32:59,142 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 -> b1ef2080ffd97f82ac51854e7d9813eba864fd0a [2020-10-20 00:32:59,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:32:59,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:32:59,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:32:59,382 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:32:59,383 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:32:59,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-10-20 00:32:59,442 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/760b3538a/b26591adde9b4a3d9318832acdd7de5e/FLAG4caa91f63 [2020-10-20 00:32:59,944 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:32:59,944 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-10-20 00:32:59,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/760b3538a/b26591adde9b4a3d9318832acdd7de5e/FLAG4caa91f63 [2020-10-20 00:33:00,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/760b3538a/b26591adde9b4a3d9318832acdd7de5e [2020-10-20 00:33:00,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:33:00,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:33:00,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:00,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:33:00,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:33:00,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:00" (1/1) ... [2020-10-20 00:33:00,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@244469df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:00, skipping insertion in model container [2020-10-20 00:33:00,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:00" (1/1) ... [2020-10-20 00:33:00,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:33:00,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:33:00,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:00,624 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:33:00,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:00,694 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:33:00,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:00 WrapperNode [2020-10-20 00:33:00,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:00,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:00,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:33:00,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:33:00,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:00" (1/1) ... [2020-10-20 00:33:00,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:00" (1/1) ... [2020-10-20 00:33:00,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:00,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:33:00,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:33:00,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:33:00,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:00" (1/1) ... [2020-10-20 00:33:00,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:00" (1/1) ... [2020-10-20 00:33:00,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:00" (1/1) ... [2020-10-20 00:33:00,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:00" (1/1) ... [2020-10-20 00:33:00,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:00" (1/1) ... [2020-10-20 00:33:00,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:00" (1/1) ... [2020-10-20 00:33:00,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:00" (1/1) ... [2020-10-20 00:33:00,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:33:00,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:33:00,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:33:00,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:33:00,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:00" (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 00:33:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:33:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:33:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:33:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:33:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:33:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:33:00,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:33:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:33:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-20 00:33:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:33:01,436 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:33:01,437 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-20 00:33:01,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:01 BoogieIcfgContainer [2020-10-20 00:33:01,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:33:01,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:33:01,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:33:01,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:33:01,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:33:00" (1/3) ... [2020-10-20 00:33:01,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c348946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:01, skipping insertion in model container [2020-10-20 00:33:01,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:00" (2/3) ... [2020-10-20 00:33:01,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c348946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:01, skipping insertion in model container [2020-10-20 00:33:01,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:01" (3/3) ... [2020-10-20 00:33:01,447 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a.c [2020-10-20 00:33:01,459 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:33:01,466 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:33:01,478 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:33:01,500 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:33:01,500 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:33:01,501 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:33:01,501 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:33:01,501 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:33:01,501 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:33:01,501 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:33:01,501 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:33:01,516 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-20 00:33:01,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:33:01,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:01,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:01,523 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:01,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:01,529 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2020-10-20 00:33:01,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:01,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214449417] [2020-10-20 00:33:01,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:01,692 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 00:33:01,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214449417] [2020-10-20 00:33:01,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:01,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:33:01,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959756740] [2020-10-20 00:33:01,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:33:01,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:33:01,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:33:01,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:33:01,712 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2020-10-20 00:33:01,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:01,735 INFO L93 Difference]: Finished difference Result 109 states and 191 transitions. [2020-10-20 00:33:01,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:33:01,736 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-20 00:33:01,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:01,747 INFO L225 Difference]: With dead ends: 109 [2020-10-20 00:33:01,747 INFO L226 Difference]: Without dead ends: 52 [2020-10-20 00:33:01,751 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 00:33:01,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-20 00:33:01,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-20 00:33:01,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 00:33:01,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-10-20 00:33:01,792 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2020-10-20 00:33:01,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:01,792 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-10-20 00:33:01,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:33:01,793 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-10-20 00:33:01,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:33:01,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:01,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:01,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:33:01,794 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:01,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:01,795 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2020-10-20 00:33:01,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:33:01,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544378459] [2020-10-20 00:33:01,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:33:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:33:01,890 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:33:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:33:01,972 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:33:02,029 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:33:02,030 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:33:02,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:33:02,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:33:02 BoogieIcfgContainer [2020-10-20 00:33:02,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:33:02,099 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:33:02,100 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:33:02,100 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:33:02,101 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:01" (3/4) ... [2020-10-20 00:33:02,105 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:33:02,105 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:33:02,108 INFO L168 Benchmark]: Toolchain (without parser) took 1849.59 ms. Allocated memory was 36.2 MB in the beginning and 50.3 MB in the end (delta: 14.2 MB). Free memory was 9.9 MB in the beginning and 28.3 MB in the end (delta: -18.4 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:33:02,109 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 36.2 MB. Free memory is still 15.2 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:33:02,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 431.44 ms. Allocated memory was 36.2 MB in the beginning and 45.1 MB in the end (delta: 8.9 MB). Free memory was 9.1 MB in the beginning and 24.0 MB in the end (delta: -15.0 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:02,111 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.13 ms. Allocated memory is still 45.1 MB. Free memory was 23.9 MB in the beginning and 21.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:02,112 INFO L168 Benchmark]: Boogie Preprocessor took 43.75 ms. Allocated memory is still 45.1 MB. Free memory was 21.1 MB in the beginning and 18.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:02,113 INFO L168 Benchmark]: RCFGBuilder took 641.37 ms. Allocated memory was 45.1 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). Free memory was 18.8 MB in the beginning and 18.1 MB in the end (delta: 656.5 kB). Peak memory consumption was 10.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:02,114 INFO L168 Benchmark]: TraceAbstraction took 659.29 ms. Allocated memory was 47.2 MB in the beginning and 50.3 MB in the end (delta: 3.1 MB). Free memory was 17.5 MB in the beginning and 28.7 MB in the end (delta: -11.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:33:02,115 INFO L168 Benchmark]: Witness Printer took 6.05 ms. Allocated memory is still 50.3 MB. Free memory was 28.7 MB in the beginning and 28.3 MB in the end (delta: 411.2 kB). Peak memory consumption was 411.2 kB. Max. memory is 14.3 GB. [2020-10-20 00:33:02,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 36.2 MB. Free memory is still 15.2 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 431.44 ms. Allocated memory was 36.2 MB in the beginning and 45.1 MB in the end (delta: 8.9 MB). Free memory was 9.1 MB in the beginning and 24.0 MB in the end (delta: -15.0 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 57.13 ms. Allocated memory is still 45.1 MB. Free memory was 23.9 MB in the beginning and 21.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 43.75 ms. Allocated memory is still 45.1 MB. Free memory was 21.1 MB in the beginning and 18.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 641.37 ms. Allocated memory was 45.1 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). Free memory was 18.8 MB in the beginning and 18.1 MB in the end (delta: 656.5 kB). Peak memory consumption was 10.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 659.29 ms. Allocated memory was 47.2 MB in the beginning and 50.3 MB in the end (delta: 3.1 MB). Free memory was 17.5 MB in the beginning and 28.7 MB in the end (delta: -11.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. * Witness Printer took 6.05 ms. Allocated memory is still 50.3 MB. Free memory was 28.7 MB in the beginning and 28.3 MB in the end (delta: 411.2 kB). Peak memory consumption was 411.2 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 bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L171] double x = __VERIFIER_nondet_double(); [L172] double y = 0.0; [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L173] double res = fmod_double(x, y); [L18] return x != x; VAL [one_fmod=1, Zero_fmod={9:0}] [L176] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1121a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:33:04,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:33:04,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:33:04,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:33:04,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:33:04,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:33:04,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:33:04,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:33:04,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:33:04,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:33:04,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:33:04,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:33:04,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:33:04,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:33:04,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:33:04,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:33:04,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:33:04,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:33:04,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:33:04,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:33:04,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:33:04,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:33:04,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:33:04,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:33:04,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:33:04,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:33:04,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:33:04,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:33:04,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:33:04,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:33:04,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:33:04,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:33:04,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:33:04,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:33:04,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:33:04,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:33:04,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:33:04,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:33:04,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:33:04,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:33:04,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:33:04,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:33:04,419 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:33:04,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:33:04,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:33:04,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:33:04,422 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:33:04,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:33:04,422 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:33:04,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:33:04,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:33:04,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:33:04,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:33:04,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:33:04,424 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:33:04,425 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:33:04,425 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:33:04,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:33:04,426 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:33:04,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:33:04,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:33:04,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:33:04,427 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:33:04,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:33:04,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:33:04,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:33:04,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:33:04,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:33:04,428 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:33:04,428 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:33:04,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:33:04,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:33:04,429 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:33:04,429 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 -> b1ef2080ffd97f82ac51854e7d9813eba864fd0a [2020-10-20 00:33:04,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:33:04,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:33:04,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:33:04,691 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:33:04,692 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:33:04,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-10-20 00:33:04,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad34b5968/9655bc7775cb4548854f7e4712e2e1bd/FLAG7907fe749 [2020-10-20 00:33:05,237 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:33:05,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-10-20 00:33:05,256 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad34b5968/9655bc7775cb4548854f7e4712e2e1bd/FLAG7907fe749 [2020-10-20 00:33:05,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad34b5968/9655bc7775cb4548854f7e4712e2e1bd [2020-10-20 00:33:05,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:33:05,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:33:05,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:05,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:33:05,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:33:05,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:05" (1/1) ... [2020-10-20 00:33:05,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@702021d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:05, skipping insertion in model container [2020-10-20 00:33:05,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:33:05" (1/1) ... [2020-10-20 00:33:05,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:33:05,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:33:05,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:05,953 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:33:06,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:33:06,044 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:33:06,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06 WrapperNode [2020-10-20 00:33:06,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:33:06,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:06,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:33:06,047 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:33:06,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (1/1) ... [2020-10-20 00:33:06,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (1/1) ... [2020-10-20 00:33:06,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:33:06,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:33:06,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:33:06,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:33:06,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (1/1) ... [2020-10-20 00:33:06,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (1/1) ... [2020-10-20 00:33:06,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (1/1) ... [2020-10-20 00:33:06,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (1/1) ... [2020-10-20 00:33:06,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (1/1) ... [2020-10-20 00:33:06,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (1/1) ... [2020-10-20 00:33:06,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (1/1) ... [2020-10-20 00:33:06,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:33:06,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:33:06,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:33:06,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:33:06,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (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 [2020-10-20 00:33:06,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-20 00:33:06,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:33:06,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:33:06,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:33:06,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-10-20 00:33:06,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:33:06,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:33:06,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:33:06,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:33:06,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:33:10,018 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:33:10,019 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-20 00:33:10,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:10 BoogieIcfgContainer [2020-10-20 00:33:10,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:33:10,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:33:10,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:33:10,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:33:10,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:33:05" (1/3) ... [2020-10-20 00:33:10,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d8d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:10, skipping insertion in model container [2020-10-20 00:33:10,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:33:06" (2/3) ... [2020-10-20 00:33:10,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d8d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:33:10, skipping insertion in model container [2020-10-20 00:33:10,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:10" (3/3) ... [2020-10-20 00:33:10,031 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a.c [2020-10-20 00:33:10,043 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:33:10,052 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:33:10,065 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:33:10,089 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:33:10,089 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:33:10,089 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:33:10,089 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:33:10,090 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:33:10,090 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:33:10,090 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:33:10,090 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:33:10,105 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-20 00:33:10,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:33:10,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:10,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:10,112 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:10,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:10,117 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2020-10-20 00:33:10,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:10,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119985162] [2020-10-20 00:33:10,130 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 00:33:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:11,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:33:11,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:11,138 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 00:33:11,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:11,143 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 00:33:11,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119985162] [2020-10-20 00:33:11,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:11,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:33:11,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077396744] [2020-10-20 00:33:11,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:33:11,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:11,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:33:11,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:33:11,174 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2020-10-20 00:33:11,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:33:11,202 INFO L93 Difference]: Finished difference Result 109 states and 191 transitions. [2020-10-20 00:33:11,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:33:11,203 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-20 00:33:11,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:33:11,213 INFO L225 Difference]: With dead ends: 109 [2020-10-20 00:33:11,213 INFO L226 Difference]: Without dead ends: 52 [2020-10-20 00:33:11,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 00:33:11,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-20 00:33:11,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-20 00:33:11,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 00:33:11,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-10-20 00:33:11,258 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2020-10-20 00:33:11,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:33:11,258 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-10-20 00:33:11,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:33:11,259 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-10-20 00:33:11,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:33:11,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:33:11,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:33:11,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:33:11,467 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:33:11,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:33:11,468 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2020-10-20 00:33:11,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:33:11,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250797276] [2020-10-20 00:33:11,470 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 00:33:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:33:12,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 00:33:12,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:33:23,982 WARN L193 SmtUtils]: Spent 3.78 s on a formula simplification that was a NOOP. DAG size: 8 [2020-10-20 00:33:33,350 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 00:33:33,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:33:46,036 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_double_~x c_ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2020-10-20 00:33:48,082 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 00:33:48,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250797276] [2020-10-20 00:33:48,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:33:48,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-10-20 00:33:48,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569659889] [2020-10-20 00:33:48,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 00:33:48,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:33:48,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 00:33:48,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=68, Unknown=2, NotChecked=16, Total=110 [2020-10-20 00:33:48,087 INFO L87 Difference]: Start difference. First operand 52 states and 78 transitions. Second operand 11 states. [2020-10-20 00:33:53,648 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_double_~x c_ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_fmod_double_~y (_ +zero 11 53))) is different from true [2020-10-20 00:33:57,843 WARN L860 $PredicateComparison]: unable to prove that (and (not (fp.eq |c_ULTIMATE.start_fmod_double_#res| |c_ULTIMATE.start_fmod_double_#res|)) (exists ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (= |c_ULTIMATE.start_fmod_double_#res| (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_fmod_double_~x (_ +zero 11 53)))) (fp.div roundNearestTiesToEven .cse0 .cse0))))) is different from true [2020-10-20 00:34:12,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:34:12,472 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2020-10-20 00:34:12,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 00:34:12,519 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-10-20 00:34:12,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:34:12,521 INFO L225 Difference]: With dead ends: 57 [2020-10-20 00:34:12,521 INFO L226 Difference]: Without dead ends: 52 [2020-10-20 00:34:12,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 43.5s TimeCoverageRelationStatistics Valid=34, Invalid=84, Unknown=4, NotChecked=60, Total=182 [2020-10-20 00:34:12,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-20 00:34:12,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-20 00:34:12,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 00:34:12,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 77 transitions. [2020-10-20 00:34:12,545 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 77 transitions. Word has length 12 [2020-10-20 00:34:12,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:34:12,546 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 77 transitions. [2020-10-20 00:34:12,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 00:34:12,547 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 77 transitions. [2020-10-20 00:34:12,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:34:12,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:34:12,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:34:12,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:34:12,761 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:34:12,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:34:12,762 INFO L82 PathProgramCache]: Analyzing trace with hash -910533226, now seen corresponding path program 1 times [2020-10-20 00:34:12,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:34:12,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195752552] [2020-10-20 00:34:12,764 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 00:34:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:34:13,033 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:34:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:34:13,245 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:34:13,322 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 00:34:13,322 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:34:13,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 00:34:13,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:34:13 BoogieIcfgContainer [2020-10-20 00:34:13,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:34:13,600 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:34:13,600 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:34:13,600 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:34:13,601 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:33:10" (3/4) ... [2020-10-20 00:34:13,603 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:34:13,677 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:34:13,677 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:34:13,679 INFO L168 Benchmark]: Toolchain (without parser) took 68100.64 ms. Allocated memory was 35.1 MB in the beginning and 50.9 MB in the end (delta: 15.7 MB). Free memory was 12.3 MB in the beginning and 27.6 MB in the end (delta: -15.3 MB). Peak memory consumption was 472.2 kB. Max. memory is 14.3 GB. [2020-10-20 00:34:13,680 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 33.6 MB. Free memory was 18.6 MB in the beginning and 18.5 MB in the end (delta: 41.6 kB). Peak memory consumption was 41.6 kB. Max. memory is 14.3 GB. [2020-10-20 00:34:13,681 INFO L168 Benchmark]: CACSL2BoogieTranslator took 460.78 ms. Allocated memory was 35.1 MB in the beginning and 43.0 MB in the end (delta: 7.9 MB). Free memory was 11.4 MB in the beginning and 21.3 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:34:13,681 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.36 ms. Allocated memory is still 43.0 MB. Free memory was 21.3 MB in the beginning and 18.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:34:13,682 INFO L168 Benchmark]: Boogie Preprocessor took 54.40 ms. Allocated memory is still 43.0 MB. Free memory was 18.7 MB in the beginning and 16.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:34:13,683 INFO L168 Benchmark]: RCFGBuilder took 3858.91 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 16.1 MB in the beginning and 27.9 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:34:13,684 INFO L168 Benchmark]: TraceAbstraction took 63577.01 ms. Allocated memory was 45.6 MB in the beginning and 50.9 MB in the end (delta: 5.2 MB). Free memory was 27.3 MB in the beginning and 30.6 MB in the end (delta: -3.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:34:13,684 INFO L168 Benchmark]: Witness Printer took 77.57 ms. Allocated memory is still 50.9 MB. Free memory was 30.6 MB in the beginning and 27.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:34:13,689 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 33.6 MB. Free memory was 18.6 MB in the beginning and 18.5 MB in the end (delta: 41.6 kB). Peak memory consumption was 41.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 460.78 ms. Allocated memory was 35.1 MB in the beginning and 43.0 MB in the end (delta: 7.9 MB). Free memory was 11.4 MB in the beginning and 21.3 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 61.36 ms. Allocated memory is still 43.0 MB. Free memory was 21.3 MB in the beginning and 18.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 54.40 ms. Allocated memory is still 43.0 MB. Free memory was 18.7 MB in the beginning and 16.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 3858.91 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 16.1 MB in the beginning and 27.9 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 63577.01 ms. Allocated memory was 45.6 MB in the beginning and 50.9 MB in the end (delta: 5.2 MB). Free memory was 27.3 MB in the beginning and 30.6 MB in the end (delta: -3.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 14.3 GB. * Witness Printer took 77.57 ms. Allocated memory is still 50.9 MB. Free memory was 30.6 MB in the beginning and 27.6 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: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L171] double x = __VERIFIER_nondet_double(); [L172] double y = 0.0; [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L45-L46] COND FALSE !((hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000)) VAL [one_fmod=1.0, Zero_fmod={2:0}] [L48] COND TRUE hx <= hy VAL [one_fmod=1.0, Zero_fmod={2:0}] [L49] COND TRUE (hx < hy) || (lx < ly) [L50] return x; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L173] double res = fmod_double(x, y); [L18] return x != x; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L176] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1121a.c", 3, "reach_error") VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 63.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 24.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 156 SDtfs, 2 SDslu, 336 SDs, 0 SdLazy, 17 SolverSat, 0 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 13.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 43.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred 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, 2.1s SatisfiabilityAnalysisTime, 35.5s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 7 QuantifiedInterpolants, 2549 SizeOfPredicates, 11 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...