./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0832b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_0832b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4c9cffacfd3e6caa748d273206d3a84e636fe987 ........................................................................................................................................................................................................................................................................................................ 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 -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_0832b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4c9cffacfd3e6caa748d273206d3a84e636fe987 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:48:47,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:48:47,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:48:47,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:48:47,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:48:47,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:48:47,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:48:47,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:48:47,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:48:47,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:48:47,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:48:47,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:48:47,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:48:47,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:48:47,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:48:47,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:48:47,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:48:47,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:48:47,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:48:47,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:48:47,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:48:47,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:48:47,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:48:47,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:48:47,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:48:47,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:48:47,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:48:47,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:48:47,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:48:47,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:48:47,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:48:47,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:48:47,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:48:47,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:48:47,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:48:47,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:48:47,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:48:47,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:48:47,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:48:47,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:48:47,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:48:47,677 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:48:47,692 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:48:47,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:48:47,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:48:47,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:48:47,694 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:48:47,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:48:47,694 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:48:47,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:48:47,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:48:47,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:48:47,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:48:47,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:48:47,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:48:47,696 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:48:47,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:48:47,696 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:48:47,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:48:47,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:48:47,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:48:47,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:48:47,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:48:47,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:48:47,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:48:47,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:48:47,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:48:47,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:48:47,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:48:47,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:48:47,699 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c9cffacfd3e6caa748d273206d3a84e636fe987 [2019-11-27 23:48:48,025 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:48:48,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:48:48,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:48:48,044 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:48:48,044 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:48:48,045 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0832b.c [2019-11-27 23:48:48,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d1d999e7/2ca96d8d38d04e6fb68c802bf8561dcc/FLAGe9b3d1412 [2019-11-27 23:48:48,582 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:48:48,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0832b.c [2019-11-27 23:48:48,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d1d999e7/2ca96d8d38d04e6fb68c802bf8561dcc/FLAGe9b3d1412 [2019-11-27 23:48:48,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d1d999e7/2ca96d8d38d04e6fb68c802bf8561dcc [2019-11-27 23:48:48,946 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:48:48,947 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:48:48,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:48:48,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:48:48,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:48:48,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:48:48" (1/1) ... [2019-11-27 23:48:48,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eb70adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:48, skipping insertion in model container [2019-11-27 23:48:48,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:48:48" (1/1) ... [2019-11-27 23:48:48,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:48:48,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:48:49,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:48:49,398 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:48:49,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:48:49,510 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:48:49,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:49 WrapperNode [2019-11-27 23:48:49,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:48:49,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:48:49,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:48:49,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:48:49,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:49" (1/1) ... [2019-11-27 23:48:49,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:49" (1/1) ... [2019-11-27 23:48:49,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:48:49,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:48:49,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:48:49,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:48:49,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:49" (1/1) ... [2019-11-27 23:48:49,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:49" (1/1) ... [2019-11-27 23:48:49,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:49" (1/1) ... [2019-11-27 23:48:49,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:49" (1/1) ... [2019-11-27 23:48:49,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:49" (1/1) ... [2019-11-27 23:48:49,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:49" (1/1) ... [2019-11-27 23:48:49,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:49" (1/1) ... [2019-11-27 23:48:49,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:48:49,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:48:49,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:48:49,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:48:49,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:49" (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 [2019-11-27 23:48:49,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:48:49,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 23:48:49,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-27 23:48:49,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-27 23:48:49,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:48:49,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:48:49,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:48:49,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-11-27 23:48:49,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:48:50,175 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:48:50,175 INFO L297 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-27 23:48:50,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:48:50 BoogieIcfgContainer [2019-11-27 23:48:50,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:48:50,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:48:50,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:48:50,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:48:50,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:48:48" (1/3) ... [2019-11-27 23:48:50,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4356928f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:48:50, skipping insertion in model container [2019-11-27 23:48:50,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:49" (2/3) ... [2019-11-27 23:48:50,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4356928f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:48:50, skipping insertion in model container [2019-11-27 23:48:50,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:48:50" (3/3) ... [2019-11-27 23:48:50,186 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832b.c [2019-11-27 23:48:50,194 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:48:50,201 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:48:50,214 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:48:50,238 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:48:50,239 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:48:50,239 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:48:50,239 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:48:50,239 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:48:50,240 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:48:50,240 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:48:50,240 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:48:50,256 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-27 23:48:50,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-27 23:48:50,263 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:48:50,264 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:48:50,265 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:48:50,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:48:50,271 INFO L82 PathProgramCache]: Analyzing trace with hash 354246130, now seen corresponding path program 1 times [2019-11-27 23:48:50,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:48:50,281 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033002162] [2019-11-27 23:48:50,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:48:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:48:50,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:48:50,427 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033002162] [2019-11-27 23:48:50,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:48:50,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 23:48:50,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802644292] [2019-11-27 23:48:50,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:48:50,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:48:50,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:48:50,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:48:50,448 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2019-11-27 23:48:50,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:48:50,470 INFO L93 Difference]: Finished difference Result 70 states and 112 transitions. [2019-11-27 23:48:50,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:48:50,472 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-27 23:48:50,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:48:50,481 INFO L225 Difference]: With dead ends: 70 [2019-11-27 23:48:50,481 INFO L226 Difference]: Without dead ends: 33 [2019-11-27 23:48:50,485 INFO L630 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 [2019-11-27 23:48:50,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-27 23:48:50,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-11-27 23:48:50,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-27 23:48:50,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2019-11-27 23:48:50,518 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 8 [2019-11-27 23:48:50,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:48:50,518 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2019-11-27 23:48:50,519 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:48:50,519 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2019-11-27 23:48:50,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 23:48:50,519 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:48:50,520 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:48:50,520 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:48:50,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:48:50,520 INFO L82 PathProgramCache]: Analyzing trace with hash 325000437, now seen corresponding path program 1 times [2019-11-27 23:48:50,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:48:50,521 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910324726] [2019-11-27 23:48:50,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:48:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:48:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:48:50,642 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:48:50,642 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:48:50,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:48:50 BoogieIcfgContainer [2019-11-27 23:48:50,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:48:50,684 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:48:50,685 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:48:50,685 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:48:50,685 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:48:50" (3/4) ... [2019-11-27 23:48:50,689 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 23:48:50,689 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:48:50,692 INFO L168 Benchmark]: Toolchain (without parser) took 1743.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -109.3 MB). Peak memory consumption was 31.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:48:50,693 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:48:50,694 INFO L168 Benchmark]: CACSL2BoogieTranslator took 562.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -169.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:48:50,695 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:48:50,696 INFO L168 Benchmark]: Boogie Preprocessor took 56.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:48:50,697 INFO L168 Benchmark]: RCFGBuilder took 525.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:48:50,698 INFO L168 Benchmark]: TraceAbstraction took 504.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:48:50,698 INFO L168 Benchmark]: Witness Printer took 5.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:48:50,703 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 562.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -169.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 83.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 56.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 525.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 504.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 122]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 121, overapproximation of someUnaryDOUBLEoperation at line 19, overapproximation of bitwiseAnd at line 46, overapproximation of someUnaryFLOAToperation at line 117, overapproximation of someBinaryArithmeticFLOAToperation at line 50. Possible FailurePath: [L15-L34] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; VAL [halF_exp={6:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={3:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L117] float x = -0.0f; [L37] float y, hi, lo, c, t; [L38] __int32_t k = 0, xsb, sx; [L39] __uint32_t hx; VAL [halF_exp={6:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={3:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L42] ieee_float_shape_type gf_u; [L43] gf_u.value = (x) [L44] EXPR gf_u.word [L44] (sx) = gf_u.word [L46] xsb = (sx >> 31) & 1 [L47] hx = sx & 0x7fffffff VAL [halF_exp={6:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={3:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L49] COND TRUE ((hx) > 0x7f800000L) [L50] return x + x; VAL [halF_exp={6:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={3:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L118] float res = __ieee754_expf(x); [L121] COND TRUE res != 1.0f VAL [halF_exp={6:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={3:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L122] __VERIFIER_error() VAL [halF_exp={6:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={3:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 46 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=36occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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, 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 0.1.24-30f4e4a [2019-11-27 23:48:52,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:48:52,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:48:52,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:48:52,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:48:52,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:48:52,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:48:52,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:48:52,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:48:52,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:48:52,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:48:52,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:48:52,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:48:52,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:48:52,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:48:52,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:48:52,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:48:52,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:48:52,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:48:52,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:48:52,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:48:52,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:48:52,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:48:52,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:48:52,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:48:52,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:48:52,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:48:52,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:48:52,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:48:52,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:48:52,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:48:52,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:48:52,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:48:52,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:48:52,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:48:52,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:48:52,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:48:52,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:48:52,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:48:52,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:48:52,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:48:52,667 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:48:52,695 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:48:52,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:48:52,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:48:52,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:48:52,700 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:48:52,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:48:52,701 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:48:52,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:48:52,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:48:52,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:48:52,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:48:52,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:48:52,703 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:48:52,703 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:48:52,704 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:48:52,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:48:52,704 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:48:52,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:48:52,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:48:52,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:48:52,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:48:52,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:48:52,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:48:52,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:48:52,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:48:52,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:48:52,707 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:48:52,707 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:48:52,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:48:52,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:48:52,708 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c9cffacfd3e6caa748d273206d3a84e636fe987 [2019-11-27 23:48:53,056 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:48:53,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:48:53,079 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:48:53,081 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:48:53,082 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:48:53,083 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0832b.c [2019-11-27 23:48:53,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff5db2f92/188e3c0335db4adcbfe756b4a6a63a48/FLAG761b82bab [2019-11-27 23:48:53,627 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:48:53,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0832b.c [2019-11-27 23:48:53,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff5db2f92/188e3c0335db4adcbfe756b4a6a63a48/FLAG761b82bab [2019-11-27 23:48:53,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff5db2f92/188e3c0335db4adcbfe756b4a6a63a48 [2019-11-27 23:48:54,002 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:48:54,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:48:54,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:48:54,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:48:54,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:48:54,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:48:54" (1/1) ... [2019-11-27 23:48:54,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@370861d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:54, skipping insertion in model container [2019-11-27 23:48:54,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:48:54" (1/1) ... [2019-11-27 23:48:54,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:48:54,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:48:54,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:48:54,431 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:48:54,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:48:54,506 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:48:54,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:54 WrapperNode [2019-11-27 23:48:54,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:48:54,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:48:54,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:48:54,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:48:54,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:54" (1/1) ... [2019-11-27 23:48:54,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:54" (1/1) ... [2019-11-27 23:48:54,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:48:54,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:48:54,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:48:54,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:48:54,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:54" (1/1) ... [2019-11-27 23:48:54,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:54" (1/1) ... [2019-11-27 23:48:54,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:54" (1/1) ... [2019-11-27 23:48:54,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:54" (1/1) ... [2019-11-27 23:48:54,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:54" (1/1) ... [2019-11-27 23:48:54,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:54" (1/1) ... [2019-11-27 23:48:54,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:54" (1/1) ... [2019-11-27 23:48:54,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:48:54,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:48:54,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:48:54,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:48:54,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:48:54,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2019-11-27 23:48:54,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:48:54,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-27 23:48:54,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-27 23:48:54,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:48:54,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:48:54,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-27 23:48:54,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-27 23:48:54,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:49:03,342 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:49:03,343 INFO L297 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-27 23:49:03,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:49:03 BoogieIcfgContainer [2019-11-27 23:49:03,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:49:03,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:49:03,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:49:03,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:49:03,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:48:54" (1/3) ... [2019-11-27 23:49:03,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bcb6313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:49:03, skipping insertion in model container [2019-11-27 23:49:03,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:48:54" (2/3) ... [2019-11-27 23:49:03,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bcb6313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:49:03, skipping insertion in model container [2019-11-27 23:49:03,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:49:03" (3/3) ... [2019-11-27 23:49:03,353 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832b.c [2019-11-27 23:49:03,363 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:49:03,371 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:49:03,381 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:49:03,403 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:49:03,403 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:49:03,403 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:49:03,403 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:49:03,403 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:49:03,404 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:49:03,404 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:49:03,404 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:49:03,420 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-27 23:49:03,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-27 23:49:03,427 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:49:03,428 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:49:03,428 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:49:03,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:49:03,434 INFO L82 PathProgramCache]: Analyzing trace with hash 354246130, now seen corresponding path program 1 times [2019-11-27 23:49:03,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:49:03,445 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845678922] [2019-11-27 23:49:03,445 INFO L94 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 [2019-11-27 23:49:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:49:03,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-27 23:49:03,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:49:03,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:49:03,989 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:49:03,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:49:03,993 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845678922] [2019-11-27 23:49:03,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:49:03,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-27 23:49:03,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503618579] [2019-11-27 23:49:04,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:49:04,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:49:04,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:49:04,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:49:04,018 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2019-11-27 23:49:04,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:49:04,040 INFO L93 Difference]: Finished difference Result 70 states and 112 transitions. [2019-11-27 23:49:04,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:49:04,042 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-27 23:49:04,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:49:04,053 INFO L225 Difference]: With dead ends: 70 [2019-11-27 23:49:04,054 INFO L226 Difference]: Without dead ends: 33 [2019-11-27 23:49:04,057 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:49:04,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-27 23:49:04,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-11-27 23:49:04,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-27 23:49:04,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2019-11-27 23:49:04,095 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 8 [2019-11-27 23:49:04,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:49:04,096 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2019-11-27 23:49:04,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:49:04,096 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2019-11-27 23:49:04,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 23:49:04,097 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:49:04,097 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:49:04,301 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:49:04,301 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:49:04,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:49:04,302 INFO L82 PathProgramCache]: Analyzing trace with hash 325000437, now seen corresponding path program 1 times [2019-11-27 23:49:04,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:49:04,304 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150109994] [2019-11-27 23:49:04,304 INFO L94 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 [2019-11-27 23:49:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:49:04,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-27 23:49:04,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:49:04,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:49:04,879 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:49:04,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:49:04,965 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150109994] [2019-11-27 23:49:04,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:49:04,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-27 23:49:04,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864853858] [2019-11-27 23:49:04,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-27 23:49:04,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:49:04,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-27 23:49:04,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-27 23:49:04,969 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand 8 states. [2019-11-27 23:49:13,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:49:13,153 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2019-11-27 23:49:13,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-27 23:49:13,273 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2019-11-27 23:49:13,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:49:13,274 INFO L225 Difference]: With dead ends: 54 [2019-11-27 23:49:13,274 INFO L226 Difference]: Without dead ends: 33 [2019-11-27 23:49:13,276 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-11-27 23:49:13,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-27 23:49:13,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2019-11-27 23:49:13,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-27 23:49:13,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-11-27 23:49:13,281 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 9 [2019-11-27 23:49:13,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:49:13,282 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-11-27 23:49:13,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-27 23:49:13,282 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-11-27 23:49:13,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-27 23:49:13,283 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:49:13,283 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:49:13,485 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-27 23:49:13,489 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:49:13,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:49:13,490 INFO L82 PathProgramCache]: Analyzing trace with hash -239562945, now seen corresponding path program 1 times [2019-11-27 23:49:13,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:49:13,491 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639767080] [2019-11-27 23:49:13,491 INFO L94 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 [2019-11-27 23:49:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:49:14,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-27 23:49:14,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:49:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:49:14,239 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:49:15,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:49:15,642 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639767080] [2019-11-27 23:49:15,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:49:15,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-27 23:49:15,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996964384] [2019-11-27 23:49:15,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-27 23:49:15,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:49:15,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-27 23:49:15,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-27 23:49:15,645 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 10 states. [2019-11-27 23:49:27,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:49:27,889 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2019-11-27 23:49:27,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:49:27,890 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2019-11-27 23:49:27,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:49:27,891 INFO L225 Difference]: With dead ends: 33 [2019-11-27 23:49:27,891 INFO L226 Difference]: Without dead ends: 29 [2019-11-27 23:49:27,893 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-11-27 23:49:27,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-27 23:49:27,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-27 23:49:27,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-27 23:49:27,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-11-27 23:49:27,898 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 15 [2019-11-27 23:49:27,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:49:27,898 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-11-27 23:49:27,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-27 23:49:27,899 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-11-27 23:49:27,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-27 23:49:27,899 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:49:27,900 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:49:28,111 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-27 23:49:28,112 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:49:28,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:49:28,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1708303706, now seen corresponding path program 1 times [2019-11-27 23:49:28,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:49:28,115 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286533038] [2019-11-27 23:49:28,115 INFO L94 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 [2019-11-27 23:49:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:49:29,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-27 23:49:29,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:49:29,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:49:29,410 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:49:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:49:29,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286533038] [2019-11-27 23:49:29,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:49:29,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-27 23:49:29,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104504888] [2019-11-27 23:49:29,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:49:29,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:49:29,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:49:29,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:49:29,827 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 6 states. [2019-11-27 23:49:29,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:49:29,873 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-11-27 23:49:29,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:49:29,874 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-11-27 23:49:29,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:49:29,875 INFO L225 Difference]: With dead ends: 29 [2019-11-27 23:49:29,875 INFO L226 Difference]: Without dead ends: 0 [2019-11-27 23:49:29,876 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:49:29,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-27 23:49:29,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-27 23:49:29,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-27 23:49:29,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-27 23:49:29,877 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-11-27 23:49:29,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:49:29,877 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-27 23:49:29,877 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:49:29,877 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-27 23:49:29,877 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-27 23:49:30,078 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-27 23:49:30,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-27 23:49:30,199 INFO L249 CegarLoopResult]: At program point L126(lines 111 127) the Hoare annotation is: true [2019-11-27 23:49:30,199 INFO L246 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2019-11-27 23:49:30,199 INFO L246 CegarLoopResult]: For program point L52-2(line 52) no Hoare annotation was computed. [2019-11-27 23:49:30,199 INFO L246 CegarLoopResult]: For program point L102(lines 102 106) no Hoare annotation was computed. [2019-11-27 23:49:30,199 INFO L246 CegarLoopResult]: For program point L102-1(lines 95 108) no Hoare annotation was computed. [2019-11-27 23:49:30,200 INFO L246 CegarLoopResult]: For program point L102-2(lines 102 106) no Hoare annotation was computed. [2019-11-27 23:49:30,200 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-27 23:49:30,200 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-27 23:49:30,200 INFO L246 CegarLoopResult]: For program point L53(lines 53 54) no Hoare annotation was computed. [2019-11-27 23:49:30,200 INFO L246 CegarLoopResult]: For program point L78(lines 78 81) no Hoare annotation was computed. [2019-11-27 23:49:30,200 INFO L246 CegarLoopResult]: For program point L70(lines 70 73) no Hoare annotation was computed. [2019-11-27 23:49:30,200 INFO L246 CegarLoopResult]: For program point L70-2(lines 58 73) no Hoare annotation was computed. [2019-11-27 23:49:30,201 INFO L246 CegarLoopResult]: For program point L71(lines 71 72) no Hoare annotation was computed. [2019-11-27 23:49:30,201 INFO L246 CegarLoopResult]: For program point L121(lines 121 124) no Hoare annotation was computed. [2019-11-27 23:49:30,201 INFO L246 CegarLoopResult]: For program point L55(lines 55 56) no Hoare annotation was computed. [2019-11-27 23:49:30,201 INFO L246 CegarLoopResult]: For program point L97-1(lines 97 101) no Hoare annotation was computed. [2019-11-27 23:49:30,201 INFO L242 CegarLoopResult]: At program point L97-2(lines 97 101) the Hoare annotation is: false [2019-11-27 23:49:30,201 INFO L246 CegarLoopResult]: For program point L122(line 122) no Hoare annotation was computed. [2019-11-27 23:49:30,201 INFO L246 CegarLoopResult]: For program point L89(lines 89 93) no Hoare annotation was computed. [2019-11-27 23:49:30,202 INFO L246 CegarLoopResult]: For program point L89-1(lines 82 95) no Hoare annotation was computed. [2019-11-27 23:49:30,202 INFO L246 CegarLoopResult]: For program point L89-2(lines 89 93) no Hoare annotation was computed. [2019-11-27 23:49:30,203 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-27 23:49:30,203 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 122) no Hoare annotation was computed. [2019-11-27 23:49:30,203 INFO L246 CegarLoopResult]: For program point L82(lines 82 108) no Hoare annotation was computed. [2019-11-27 23:49:30,203 INFO L246 CegarLoopResult]: For program point L49(lines 49 50) no Hoare annotation was computed. [2019-11-27 23:49:30,204 INFO L242 CegarLoopResult]: At program point L107(lines 36 109) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) (.cse1 (fp.neg (_ +zero 8 24)))) (and (= ~one_exp~0 .cse0) (= |ULTIMATE.start___ieee754_expf_#res| (fp.add currentRoundingMode .cse0 .cse1)) (= ULTIMATE.start___ieee754_expf_~x .cse1) (= currentRoundingMode roundNearestTiesToEven))) [2019-11-27 23:49:30,204 INFO L246 CegarLoopResult]: For program point L41-1(lines 41 45) no Hoare annotation was computed. [2019-11-27 23:49:30,204 INFO L242 CegarLoopResult]: At program point L41-2(lines 41 45) the Hoare annotation is: (and (= ~one_exp~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0)) ~huge_exp~0) (= ULTIMATE.start___ieee754_expf_~x (fp.neg (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven)) [2019-11-27 23:49:30,205 INFO L246 CegarLoopResult]: For program point L41-3(lines 41 45) no Hoare annotation was computed. [2019-11-27 23:49:30,205 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-27 23:49:30,205 INFO L246 CegarLoopResult]: For program point L58(lines 58 73) no Hoare annotation was computed. [2019-11-27 23:49:30,205 INFO L246 CegarLoopResult]: For program point L59(lines 59 68) no Hoare annotation was computed. [2019-11-27 23:49:30,206 INFO L246 CegarLoopResult]: For program point L59-2(lines 59 68) no Hoare annotation was computed. [2019-11-27 23:49:30,206 INFO L246 CegarLoopResult]: For program point L51(lines 51 52) no Hoare annotation was computed. [2019-11-27 23:49:30,206 INFO L246 CegarLoopResult]: For program point L84-1(lines 84 88) no Hoare annotation was computed. [2019-11-27 23:49:30,206 INFO L242 CegarLoopResult]: At program point L84-2(lines 84 88) the Hoare annotation is: false [2019-11-27 23:49:30,219 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-27 23:49:30,221 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,222 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,222 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,223 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,223 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,223 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,225 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-27 23:49:30,225 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,226 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,226 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,226 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,227 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,227 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,228 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-27 23:49:30,228 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,229 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,229 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,229 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,230 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,230 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-27 23:49:30,231 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,231 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,231 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,232 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,232 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:49:30 BoogieIcfgContainer [2019-11-27 23:49:30,235 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:49:30,235 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:49:30,235 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:49:30,236 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:49:30,236 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:49:03" (3/4) ... [2019-11-27 23:49:30,240 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-27 23:49:30,255 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-11-27 23:49:30,255 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-27 23:49:30,256 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-27 23:49:30,292 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) && \result == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()))) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2019-11-27 23:49:30,374 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:49:30,375 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:49:30,377 INFO L168 Benchmark]: Toolchain (without parser) took 36372.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 956.3 MB in the beginning and 933.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 151.0 MB. Max. memory is 11.5 GB. [2019-11-27 23:49:30,377 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:49:30,378 INFO L168 Benchmark]: CACSL2BoogieTranslator took 502.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -161.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-27 23:49:30,378 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:49:30,379 INFO L168 Benchmark]: Boogie Preprocessor took 43.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:49:30,379 INFO L168 Benchmark]: RCFGBuilder took 8737.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 34.1 MB). Peak memory consumption was 34.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:49:30,379 INFO L168 Benchmark]: TraceAbstraction took 26888.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 939.8 MB in the end (delta: 137.5 MB). Peak memory consumption was 137.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:49:30,380 INFO L168 Benchmark]: Witness Printer took 139.69 ms. Allocated memory is still 1.2 GB. Free memory was 939.8 MB in the beginning and 933.2 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:49:30,382 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 502.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -161.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 54.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 8737.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 34.1 MB). Peak memory consumption was 34.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 26888.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 939.8 MB in the end (delta: 137.5 MB). Peak memory consumption was 137.5 MB. Max. memory is 11.5 GB. * Witness Printer took 139.69 ms. Allocated memory is still 1.2 GB. Free memory was 939.8 MB in the beginning and 933.2 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 122]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 97]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant [2019-11-27 23:49:30,395 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-27 23:49:30,396 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,396 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,396 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,398 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,399 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,399 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,400 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-27 23:49:30,400 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,401 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,401 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,401 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,402 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,402 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) && \result == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()))) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 41]: Loop Invariant [2019-11-27 23:49:30,405 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-27 23:49:30,405 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,406 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,406 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,406 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,407 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,407 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-27 23:49:30,408 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,408 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,408 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,408 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-27 23:49:30,409 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) == huge_exp) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 111]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 1 error locations. Result: SAFE, OverallTime: 26.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 20.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 102 SDtfs, 91 SDslu, 171 SDs, 0 SdLazy, 58 SolverSat, 5 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 19.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 51 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 90 ConstructedInterpolants, 2 QuantifiedInterpolants, 9890 SizeOfPredicates, 19 NumberOfNonLiveVariables, 257 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...