./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1230.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c 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_1230.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 31da98a788dd1938c78053bade42bc512d4e8954 ........................................................................................................................................................................................................................................................................................................................................................... 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_1230.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 31da98a788dd1938c78053bade42bc512d4e8954 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 16:55:10,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:55:10,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:55:10,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:55:10,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:55:10,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:55:10,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:55:10,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:55:10,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:55:10,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:55:10,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:55:10,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:55:10,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:55:10,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:55:10,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:55:10,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:55:10,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:55:10,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:55:10,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:55:10,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:55:10,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:55:10,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:55:10,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:55:10,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:55:10,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:55:10,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:55:10,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:55:10,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:55:10,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:55:10,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:55:10,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:55:10,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:55:10,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:55:10,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:55:10,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:55:10,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:55:10,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:55:10,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:55:10,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:55:10,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:55:10,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:55:10,929 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:55:10,952 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:55:10,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:55:10,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:55:10,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:55:10,957 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:55:10,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:55:10,957 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:55:10,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:55:10,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:55:10,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:55:10,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:55:10,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:55:10,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:55:10,960 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:55:10,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:55:10,961 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:55:10,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:55:10,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:55:10,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:55:10,962 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:55:10,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:55:10,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:55:10,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:55:10,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:55:10,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:55:10,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:55:10,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:55:10,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:55:10,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:55:10,964 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 -> 31da98a788dd1938c78053bade42bc512d4e8954 [2019-11-28 16:55:11,292 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:55:11,305 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:55:11,308 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:55:11,310 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:55:11,310 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:55:11,311 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2019-11-28 16:55:11,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/809e07ea9/077ef0c23c5741928dcb3ef8d218747a/FLAGe9e0a4918 [2019-11-28 16:55:11,839 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:55:11,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2019-11-28 16:55:11,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/809e07ea9/077ef0c23c5741928dcb3ef8d218747a/FLAGe9e0a4918 [2019-11-28 16:55:12,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/809e07ea9/077ef0c23c5741928dcb3ef8d218747a [2019-11-28 16:55:12,190 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:55:12,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:55:12,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:55:12,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:55:12,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:55:12,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:12" (1/1) ... [2019-11-28 16:55:12,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5decbae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:12, skipping insertion in model container [2019-11-28 16:55:12,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:12" (1/1) ... [2019-11-28 16:55:12,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:55:12,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:55:12,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:55:12,397 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:55:12,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:55:12,447 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:55:12,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:12 WrapperNode [2019-11-28 16:55:12,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:55:12,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:55:12,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:55:12,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:55:12,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:12" (1/1) ... [2019-11-28 16:55:12,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:12" (1/1) ... [2019-11-28 16:55:12,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:55:12,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:55:12,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:55:12,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:55:12,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:12" (1/1) ... [2019-11-28 16:55:12,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:12" (1/1) ... [2019-11-28 16:55:12,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:12" (1/1) ... [2019-11-28 16:55:12,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:12" (1/1) ... [2019-11-28 16:55:12,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:12" (1/1) ... [2019-11-28 16:55:12,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:12" (1/1) ... [2019-11-28 16:55:12,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:12" (1/1) ... [2019-11-28 16:55:12,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:55:12,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:55:12,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:55:12,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:55:12,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:55:12,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-28 16:55:12,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:55:12,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:55:12,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:55:12,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:55:12,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:55:13,060 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:55:13,060 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-28 16:55:13,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:13 BoogieIcfgContainer [2019-11-28 16:55:13,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:55:13,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:55:13,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:55:13,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:55:13,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:55:12" (1/3) ... [2019-11-28 16:55:13,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4de9ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:13, skipping insertion in model container [2019-11-28 16:55:13,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:12" (2/3) ... [2019-11-28 16:55:13,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4de9ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:13, skipping insertion in model container [2019-11-28 16:55:13,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:13" (3/3) ... [2019-11-28 16:55:13,069 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2019-11-28 16:55:13,077 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:55:13,083 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:55:13,094 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:55:13,119 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:55:13,119 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:55:13,119 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:55:13,119 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:55:13,120 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:55:13,120 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:55:13,120 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:55:13,120 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:55:13,136 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-28 16:55:13,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 16:55:13,143 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:13,144 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:13,145 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:13,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:13,151 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-11-28 16:55:13,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:55:13,160 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051873320] [2019-11-28 16:55:13,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:55:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:13,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:13,268 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051873320] [2019-11-28 16:55:13,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:13,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 16:55:13,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633870266] [2019-11-28 16:55:13,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:55:13,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:55:13,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:55:13,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:55:13,292 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-28 16:55:13,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:13,311 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-11-28 16:55:13,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:55:13,312 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-28 16:55:13,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:13,321 INFO L225 Difference]: With dead ends: 54 [2019-11-28 16:55:13,322 INFO L226 Difference]: Without dead ends: 25 [2019-11-28 16:55:13,325 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 [2019-11-28 16:55:13,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-28 16:55:13,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-28 16:55:13,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-28 16:55:13,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-11-28 16:55:13,363 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-11-28 16:55:13,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:13,363 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-28 16:55:13,363 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:55:13,363 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-11-28 16:55:13,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:55:13,364 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:13,364 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:13,365 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:13,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:13,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-11-28 16:55:13,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:55:13,366 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165673581] [2019-11-28 16:55:13,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:55:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:13,447 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165673581] [2019-11-28 16:55:13,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:13,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 16:55:13,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007531201] [2019-11-28 16:55:13,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:55:13,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:55:13,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:55:13,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:55:13,449 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2019-11-28 16:55:13,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:13,545 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-11-28 16:55:13,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:55:13,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 16:55:13,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:13,548 INFO L225 Difference]: With dead ends: 41 [2019-11-28 16:55:13,548 INFO L226 Difference]: Without dead ends: 36 [2019-11-28 16:55:13,550 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 16:55:13,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-28 16:55:13,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2019-11-28 16:55:13,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 16:55:13,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-28 16:55:13,557 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-11-28 16:55:13,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:13,558 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-28 16:55:13,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:55:13,558 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-28 16:55:13,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 16:55:13,559 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:13,559 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:13,560 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:13,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:13,560 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2019-11-28 16:55:13,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:55:13,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441233011] [2019-11-28 16:55:13,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:55:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:13,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:13,653 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441233011] [2019-11-28 16:55:13,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:13,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 16:55:13,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376237235] [2019-11-28 16:55:13,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:55:13,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:55:13,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:55:13,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:55:13,655 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2019-11-28 16:55:13,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:13,706 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2019-11-28 16:55:13,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:55:13,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 16:55:13,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:13,708 INFO L225 Difference]: With dead ends: 43 [2019-11-28 16:55:13,708 INFO L226 Difference]: Without dead ends: 38 [2019-11-28 16:55:13,709 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 16:55:13,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-28 16:55:13,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2019-11-28 16:55:13,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 16:55:13,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-28 16:55:13,715 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2019-11-28 16:55:13,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:13,715 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-28 16:55:13,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:55:13,716 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-28 16:55:13,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 16:55:13,716 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:13,717 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:13,717 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:13,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:13,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-11-28 16:55:13,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:55:13,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848069404] [2019-11-28 16:55:13,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:55:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:55:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:55:13,814 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:55:13,814 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:55:13,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:55:13 BoogieIcfgContainer [2019-11-28 16:55:13,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:55:13,841 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:55:13,841 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:55:13,842 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:55:13,842 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:13" (3/4) ... [2019-11-28 16:55:13,845 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:55:13,846 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:55:13,849 INFO L168 Benchmark]: Toolchain (without parser) took 1655.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -113.6 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:13,849 INFO L168 Benchmark]: CDTParser took 0.22 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. [2019-11-28 16:55:13,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.84 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:13,851 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -196.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:13,852 INFO L168 Benchmark]: Boogie Preprocessor took 40.32 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. [2019-11-28 16:55:13,853 INFO L168 Benchmark]: RCFGBuilder took 462.41 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: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:13,854 INFO L168 Benchmark]: TraceAbstraction took 778.12 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: 39.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:13,855 INFO L168 Benchmark]: Witness Printer took 4.47 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. [2019-11-28 16:55:13,860 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 255.84 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 109.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -196.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.32 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 462.41 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: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 778.12 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: 39.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.47 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: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 54. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] float y = 0.0f / 0.0f; [L12] __uint32_t w; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L20] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L22-L23] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L25-L26] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L28] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L31] return 0; [L35] COND TRUE __fpclassify_float(x) == 0 [L36] return y; [L56] float res = fmin_float(x, y); [L44] return x != x; [L58] COND TRUE !isnan_float(res) [L59] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 110 SDtfs, 22 SDslu, 110 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 0.1.25-f470102 [2019-11-28 16:55:15,895 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-28 16:55:15,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:55:15,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:55:15,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:55:15,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:55:15,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:55:15,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:55:15,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:55:15,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:55:15,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:55:15,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:55:15,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:55:15,985 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:55:16,004 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:55:16,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:55:16,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:55:16,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:55:16,006 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:55:16,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:55:16,006 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:55:16,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:55:16,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:55:16,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:55:16,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:55:16,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:55:16,008 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:55:16,008 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:55:16,009 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:55:16,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:55:16,009 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:55:16,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:55:16,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:55:16,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:55:16,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:55:16,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:55:16,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:55:16,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:55:16,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:55:16,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:55:16,012 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:55:16,012 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:55:16,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:55:16,013 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:55:16,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:55:16,013 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 -> 31da98a788dd1938c78053bade42bc512d4e8954 [2019-11-28 16:55:16,331 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:55:16,344 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:55:16,350 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:55:16,352 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:55:16,352 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:55:16,353 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2019-11-28 16:55:16,416 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60c9a9fb9/1cfb7c4e494d4baf99f41798828b811e/FLAG376de38b2 [2019-11-28 16:55:16,851 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:55:16,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2019-11-28 16:55:16,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60c9a9fb9/1cfb7c4e494d4baf99f41798828b811e/FLAG376de38b2 [2019-11-28 16:55:17,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60c9a9fb9/1cfb7c4e494d4baf99f41798828b811e [2019-11-28 16:55:17,285 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:55:17,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:55:17,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:55:17,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:55:17,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:55:17,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:17" (1/1) ... [2019-11-28 16:55:17,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cff6e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:17, skipping insertion in model container [2019-11-28 16:55:17,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:17" (1/1) ... [2019-11-28 16:55:17,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:55:17,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:55:17,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:55:17,590 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:55:17,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:55:17,736 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:55:17,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:17 WrapperNode [2019-11-28 16:55:17,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:55:17,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:55:17,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:55:17,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:55:17,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:17" (1/1) ... [2019-11-28 16:55:17,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:17" (1/1) ... [2019-11-28 16:55:17,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:55:17,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:55:17,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:55:17,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:55:17,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:17" (1/1) ... [2019-11-28 16:55:17,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:17" (1/1) ... [2019-11-28 16:55:17,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:17" (1/1) ... [2019-11-28 16:55:17,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:17" (1/1) ... [2019-11-28 16:55:17,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:17" (1/1) ... [2019-11-28 16:55:17,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:17" (1/1) ... [2019-11-28 16:55:17,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:17" (1/1) ... [2019-11-28 16:55:17,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:55:17,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:55:17,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:55:17,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:55:17,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:17" (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 [2019-11-28 16:55:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:55:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 16:55:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:55:17,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:55:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-28 16:55:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:55:18,359 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:55:18,359 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-28 16:55:18,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:18 BoogieIcfgContainer [2019-11-28 16:55:18,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:55:18,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:55:18,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:55:18,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:55:18,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:55:17" (1/3) ... [2019-11-28 16:55:18,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b41c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:18, skipping insertion in model container [2019-11-28 16:55:18,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:17" (2/3) ... [2019-11-28 16:55:18,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b41c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:55:18, skipping insertion in model container [2019-11-28 16:55:18,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:18" (3/3) ... [2019-11-28 16:55:18,370 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2019-11-28 16:55:18,380 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:55:18,389 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:55:18,402 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:55:18,424 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:55:18,425 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:55:18,425 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:55:18,425 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:55:18,425 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:55:18,425 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:55:18,426 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:55:18,426 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:55:18,439 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-28 16:55:18,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 16:55:18,446 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:18,447 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:18,447 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:18,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:18,453 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-11-28 16:55:18,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:18,465 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510299713] [2019-11-28 16:55:18,465 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 [2019-11-28 16:55:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:18,550 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-28 16:55:18,555 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:18,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:18,571 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:18,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:18,576 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510299713] [2019-11-28 16:55:18,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:18,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 16:55:18,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369912216] [2019-11-28 16:55:18,584 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:55:18,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:18,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:55:18,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:55:18,599 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-28 16:55:18,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:18,620 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-11-28 16:55:18,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:55:18,622 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-28 16:55:18,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:18,633 INFO L225 Difference]: With dead ends: 54 [2019-11-28 16:55:18,634 INFO L226 Difference]: Without dead ends: 25 [2019-11-28 16:55:18,637 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:55:18,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-28 16:55:18,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-28 16:55:18,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-28 16:55:18,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-11-28 16:55:18,672 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-11-28 16:55:18,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:18,672 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-28 16:55:18,672 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:55:18,673 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-11-28 16:55:18,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:55:18,673 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:18,674 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:18,888 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:55:18,889 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:18,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:18,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-11-28 16:55:18,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:18,892 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139886743] [2019-11-28 16:55:18,892 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 [2019-11-28 16:55:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:18,966 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 16:55:18,968 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:19,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:19,007 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:19,036 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139886743] [2019-11-28 16:55:19,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:19,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-28 16:55:19,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704192787] [2019-11-28 16:55:19,039 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 16:55:19,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:19,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 16:55:19,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:55:19,041 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2019-11-28 16:55:19,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:19,195 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2019-11-28 16:55:19,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:55:19,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-28 16:55:19,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:19,197 INFO L225 Difference]: With dead ends: 52 [2019-11-28 16:55:19,197 INFO L226 Difference]: Without dead ends: 47 [2019-11-28 16:55:19,199 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-28 16:55:19,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-28 16:55:19,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-28 16:55:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 16:55:19,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-28 16:55:19,207 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-11-28 16:55:19,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:19,208 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-28 16:55:19,208 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 16:55:19,208 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-28 16:55:19,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 16:55:19,209 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:19,209 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:19,423 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 16:55:19,424 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:19,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:19,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-11-28 16:55:19,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:19,426 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717138318] [2019-11-28 16:55:19,426 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 [2019-11-28 16:55:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:19,483 INFO L264 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 16:55:19,485 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:19,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:55:19,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:19,603 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:19,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717138318] [2019-11-28 16:55:19,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:19,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-28 16:55:19,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678697502] [2019-11-28 16:55:19,701 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 16:55:19,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:19,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 16:55:19,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-28 16:55:19,703 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2019-11-28 16:55:20,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:20,003 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2019-11-28 16:55:20,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:55:20,004 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-11-28 16:55:20,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:20,007 INFO L225 Difference]: With dead ends: 36 [2019-11-28 16:55:20,007 INFO L226 Difference]: Without dead ends: 27 [2019-11-28 16:55:20,008 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-28 16:55:20,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-28 16:55:20,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-11-28 16:55:20,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-28 16:55:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2019-11-28 16:55:20,014 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2019-11-28 16:55:20,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:20,014 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2019-11-28 16:55:20,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 16:55:20,015 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2019-11-28 16:55:20,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 16:55:20,015 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:20,015 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:20,216 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 16:55:20,217 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:20,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:20,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2019-11-28 16:55:20,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:20,219 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932217313] [2019-11-28 16:55:20,220 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 [2019-11-28 16:55:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:20,297 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 16:55:20,298 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:20,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:20,314 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:20,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:20,336 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932217313] [2019-11-28 16:55:20,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:20,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-28 16:55:20,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757086821] [2019-11-28 16:55:20,338 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 16:55:20,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:20,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 16:55:20,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:55:20,339 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2019-11-28 16:55:20,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:20,475 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2019-11-28 16:55:20,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:55:20,476 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-28 16:55:20,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:20,477 INFO L225 Difference]: With dead ends: 52 [2019-11-28 16:55:20,477 INFO L226 Difference]: Without dead ends: 47 [2019-11-28 16:55:20,478 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-28 16:55:20,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-28 16:55:20,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-28 16:55:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 16:55:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2019-11-28 16:55:20,486 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2019-11-28 16:55:20,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:20,486 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2019-11-28 16:55:20,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 16:55:20,487 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2019-11-28 16:55:20,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 16:55:20,488 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:20,488 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:20,711 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-28 16:55:20,711 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:20,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:20,712 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2019-11-28 16:55:20,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:20,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686663050] [2019-11-28 16:55:20,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-28 16:55:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:20,801 INFO L264 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 16:55:20,803 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:20,876 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:55:20,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:20,917 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:21,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:21,028 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686663050] [2019-11-28 16:55:21,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:21,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-28 16:55:21,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420715993] [2019-11-28 16:55:21,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 16:55:21,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:21,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 16:55:21,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-11-28 16:55:21,031 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2019-11-28 16:55:21,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:21,419 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2019-11-28 16:55:21,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 16:55:21,420 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2019-11-28 16:55:21,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:21,420 INFO L225 Difference]: With dead ends: 32 [2019-11-28 16:55:21,421 INFO L226 Difference]: Without dead ends: 23 [2019-11-28 16:55:21,422 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-11-28 16:55:21,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-28 16:55:21,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-28 16:55:21,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 16:55:21,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-11-28 16:55:21,430 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2019-11-28 16:55:21,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:21,431 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-11-28 16:55:21,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 16:55:21,431 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-11-28 16:55:21,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 16:55:21,432 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:55:21,436 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:55:21,651 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-28 16:55:21,652 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:55:21,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:55:21,652 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2019-11-28 16:55:21,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:55:21,653 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619718271] [2019-11-28 16:55:21,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-28 16:55:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:55:21,732 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 16:55:21,734 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:55:21,778 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:55:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:21,821 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:55:21,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:55:21,898 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619718271] [2019-11-28 16:55:21,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:55:21,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-28 16:55:21,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805920675] [2019-11-28 16:55:21,899 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 16:55:21,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:55:21,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 16:55:21,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-28 16:55:21,900 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2019-11-28 16:55:22,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:55:22,142 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-11-28 16:55:22,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:55:22,142 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-11-28 16:55:22,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:55:22,143 INFO L225 Difference]: With dead ends: 23 [2019-11-28 16:55:22,143 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 16:55:22,144 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-28 16:55:22,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 16:55:22,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 16:55:22,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 16:55:22,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 16:55:22,145 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-11-28 16:55:22,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:55:22,145 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 16:55:22,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 16:55:22,145 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 16:55:22,146 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 16:55:22,351 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-28 16:55:22,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 16:55:22,558 INFO L242 CegarLoopResult]: At program point L31(lines 11 32) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-11-28 16:55:22,558 INFO L242 CegarLoopResult]: At program point L31-1(lines 11 32) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)))) (or (and (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) .cse0) (and (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse0))) [2019-11-28 16:55:22,559 INFO L242 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fmin_float_#res|)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-11-28 16:55:22,559 INFO L246 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2019-11-28 16:55:22,559 INFO L246 CegarLoopResult]: For program point L40-2(line 40) no Hoare annotation was computed. [2019-11-28 16:55:22,559 INFO L242 CegarLoopResult]: At program point L40-3(lines 34 41) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fmin_float_#res|)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-11-28 16:55:22,559 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-28 16:55:22,559 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 16:55:22,559 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 16:55:22,560 INFO L246 CegarLoopResult]: For program point L28(lines 28 31) no Hoare annotation was computed. [2019-11-28 16:55:22,560 INFO L246 CegarLoopResult]: For program point L28-1(lines 28 31) no Hoare annotation was computed. [2019-11-28 16:55:22,560 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2019-11-28 16:55:22,560 INFO L246 CegarLoopResult]: For program point L37(lines 37 38) no Hoare annotation was computed. [2019-11-28 16:55:22,560 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 16:55:22,560 INFO L246 CegarLoopResult]: For program point L58(lines 58 61) no Hoare annotation was computed. [2019-11-28 16:55:22,560 INFO L246 CegarLoopResult]: For program point L25(lines 25 31) no Hoare annotation was computed. [2019-11-28 16:55:22,560 INFO L246 CegarLoopResult]: For program point L25-1(lines 25 31) no Hoare annotation was computed. [2019-11-28 16:55:22,561 INFO L249 CegarLoopResult]: At program point L63(lines 46 64) the Hoare annotation is: true [2019-11-28 16:55:22,561 INFO L246 CegarLoopResult]: For program point L59(line 59) no Hoare annotation was computed. [2019-11-28 16:55:22,561 INFO L246 CegarLoopResult]: For program point L22(lines 22 31) no Hoare annotation was computed. [2019-11-28 16:55:22,561 INFO L246 CegarLoopResult]: For program point L22-1(lines 22 31) no Hoare annotation was computed. [2019-11-28 16:55:22,561 INFO L246 CegarLoopResult]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2019-11-28 16:55:22,561 INFO L242 CegarLoopResult]: At program point L14-2(lines 14 18) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-11-28 16:55:22,561 INFO L246 CegarLoopResult]: For program point L14-3(lines 11 32) no Hoare annotation was computed. [2019-11-28 16:55:22,561 INFO L246 CegarLoopResult]: For program point L14-5(lines 14 18) no Hoare annotation was computed. [2019-11-28 16:55:22,562 INFO L242 CegarLoopResult]: At program point L14-6(lines 14 18) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-11-28 16:55:22,562 INFO L246 CegarLoopResult]: For program point L14-7(lines 11 32) no Hoare annotation was computed. [2019-11-28 16:55:22,562 INFO L246 CegarLoopResult]: For program point L35(lines 35 36) no Hoare annotation was computed. [2019-11-28 16:55:22,575 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:55:22,576 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:55:22,577 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:55:22,578 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:55:22,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:55:22 BoogieIcfgContainer [2019-11-28 16:55:22,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:55:22,582 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:55:22,582 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:55:22,582 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:55:22,583 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:55:18" (3/4) ... [2019-11-28 16:55:22,587 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 16:55:22,601 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-28 16:55:22,601 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-28 16:55:22,601 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 16:55:22,633 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~FLOAT(y, y) [2019-11-28 16:55:22,634 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && !~fp.eq~FLOAT(y, y) [2019-11-28 16:55:22,634 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) || (!~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y)) [2019-11-28 16:55:22,668 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:55:22,668 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:55:22,674 INFO L168 Benchmark]: Toolchain (without parser) took 5383.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 959.0 MB in the beginning and 885.7 MB in the end (delta: 73.3 MB). Peak memory consumption was 210.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:22,675 INFO L168 Benchmark]: CDTParser took 0.17 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. [2019-11-28 16:55:22,675 INFO L168 Benchmark]: CACSL2BoogieTranslator took 449.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 959.0 MB in the beginning and 1.1 GB in the end (delta: -172.5 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:22,678 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.73 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. [2019-11-28 16:55:22,678 INFO L168 Benchmark]: Boogie Preprocessor took 62.23 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. [2019-11-28 16:55:22,679 INFO L168 Benchmark]: RCFGBuilder took 479.31 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. [2019-11-28 16:55:22,680 INFO L168 Benchmark]: TraceAbstraction took 4219.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 892.4 MB in the end (delta: 207.3 MB). Peak memory consumption was 207.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:22,680 INFO L168 Benchmark]: Witness Printer took 86.48 ms. Allocated memory is still 1.2 GB. Free memory was 892.4 MB in the beginning and 885.7 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:55:22,685 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 449.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 959.0 MB in the beginning and 1.1 GB in the end (delta: -172.5 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 80.73 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 62.23 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 479.31 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 4219.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 892.4 MB in the end (delta: 207.3 MB). Peak memory consumption was 207.3 MB. Max. memory is 11.5 GB. * Witness Printer took 86.48 ms. Allocated memory is still 1.2 GB. Free memory was 892.4 MB in the beginning and 885.7 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 59]: 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: 11]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant [2019-11-28 16:55:22,699 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:55:22,699 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 44]: Loop Invariant [2019-11-28 16:55:22,700 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:55:22,700 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) || (!~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 3.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 182 SDtfs, 107 SDslu, 476 SDs, 0 SdLazy, 126 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 231 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8562 SizeOfPredicates, 32 NumberOfNonLiveVariables, 285 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...