./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1071.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 341305be8cf30067c8ef09b4a168f6c17078b23f ................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 341305be8cf30067c8ef09b4a168f6c17078b23f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:39:40,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:39:40,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:39:40,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:39:40,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:39:40,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:39:40,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:39:40,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:39:40,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:39:40,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:39:40,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:39:40,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:39:40,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:39:40,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:39:40,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:39:40,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:39:40,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:39:40,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:39:40,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:39:40,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:39:40,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:39:40,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:39:40,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:39:40,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:39:40,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:39:40,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:39:40,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:39:40,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:39:40,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:39:40,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:39:40,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:39:40,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:39:40,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:39:40,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:39:40,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:39:40,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:39:40,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:39:40,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:39:40,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:39:40,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:39:40,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:39:40,964 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:39:41,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:39:41,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:39:41,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:39:41,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:39:41,007 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:39:41,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:39:41,008 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:39:41,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:39:41,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:39:41,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:39:41,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:39:41,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:39:41,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:39:41,010 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:39:41,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:39:41,010 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:39:41,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:39:41,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:39:41,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:39:41,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:39:41,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:39:41,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:39:41,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:39:41,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:39:41,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:39:41,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:39:41,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:39:41,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:39:41,013 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:39:41,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 341305be8cf30067c8ef09b4a168f6c17078b23f [2020-10-20 00:39:41,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:39:41,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:39:41,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:39:41,303 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:39:41,304 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:39:41,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-10-20 00:39:41,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c43acb21f/8d4c849e3d4848139ddd18e719ac532d/FLAG4fe5c3310 [2020-10-20 00:39:41,838 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:39:41,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-10-20 00:39:41,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c43acb21f/8d4c849e3d4848139ddd18e719ac532d/FLAG4fe5c3310 [2020-10-20 00:39:42,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c43acb21f/8d4c849e3d4848139ddd18e719ac532d [2020-10-20 00:39:42,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:39:42,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:39:42,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:39:42,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:39:42,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:39:42,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:39:42" (1/1) ... [2020-10-20 00:39:42,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cafc818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:42, skipping insertion in model container [2020-10-20 00:39:42,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:39:42" (1/1) ... [2020-10-20 00:39:42,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:39:42,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:39:42,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:39:42,536 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:39:42,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:39:42,600 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:39:42,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:42 WrapperNode [2020-10-20 00:39:42,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:39:42,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:39:42,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:39:42,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:39:42,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:42" (1/1) ... [2020-10-20 00:39:42,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:42" (1/1) ... [2020-10-20 00:39:42,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:39:42,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:39:42,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:39:42,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:39:42,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:42" (1/1) ... [2020-10-20 00:39:42,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:42" (1/1) ... [2020-10-20 00:39:42,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:42" (1/1) ... [2020-10-20 00:39:42,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:42" (1/1) ... [2020-10-20 00:39:42,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:42" (1/1) ... [2020-10-20 00:39:42,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:42" (1/1) ... [2020-10-20 00:39:42,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:42" (1/1) ... [2020-10-20 00:39:42,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:39:42,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:39:42,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:39:42,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:39:42,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:39:42,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:39:42,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:39:42,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:39:42,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:39:42,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:39:42,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:39:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:39:42,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:39:42,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:39:43,038 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:39:43,038 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:39:43,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:39:43 BoogieIcfgContainer [2020-10-20 00:39:43,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:39:43,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:39:43,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:39:43,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:39:43,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:39:42" (1/3) ... [2020-10-20 00:39:43,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6025864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:39:43, skipping insertion in model container [2020-10-20 00:39:43,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:42" (2/3) ... [2020-10-20 00:39:43,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6025864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:39:43, skipping insertion in model container [2020-10-20 00:39:43,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:39:43" (3/3) ... [2020-10-20 00:39:43,052 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2020-10-20 00:39:43,067 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:39:43,076 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:39:43,095 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:39:43,161 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:39:43,161 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:39:43,161 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:39:43,162 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:39:43,163 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:39:43,163 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:39:43,163 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:39:43,164 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:39:43,203 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-20 00:39:43,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:39:43,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:39:43,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:39:43,217 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:39:43,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:39:43,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1945097259, now seen corresponding path program 1 times [2020-10-20 00:39:43,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:39:43,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69560564] [2020-10-20 00:39:43,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:39:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:39:43,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:39:43,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69560564] [2020-10-20 00:39:43,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:39:43,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:39:43,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569344434] [2020-10-20 00:39:43,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:39:43,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:39:43,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:39:43,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:39:43,447 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-10-20 00:39:43,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:39:43,464 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-10-20 00:39:43,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:39:43,466 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-20 00:39:43,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:39:43,476 INFO L225 Difference]: With dead ends: 41 [2020-10-20 00:39:43,477 INFO L226 Difference]: Without dead ends: 18 [2020-10-20 00:39:43,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:39:43,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-20 00:39:43,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-20 00:39:43,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 00:39:43,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-10-20 00:39:43,514 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2020-10-20 00:39:43,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:39:43,522 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-10-20 00:39:43,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:39:43,522 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-10-20 00:39:43,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:39:43,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:39:43,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:39:43,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:39:43,524 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:39:43,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:39:43,525 INFO L82 PathProgramCache]: Analyzing trace with hash -390209938, now seen corresponding path program 1 times [2020-10-20 00:39:43,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:39:43,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588284305] [2020-10-20 00:39:43,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:39:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:39:43,597 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:39:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:39:43,639 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:39:43,673 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:39:43,673 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:39:43,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:39:43,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:39:43 BoogieIcfgContainer [2020-10-20 00:39:43,709 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:39:43,710 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:39:43,710 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:39:43,710 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:39:43,711 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:39:43" (3/4) ... [2020-10-20 00:39:43,716 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:39:43,716 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:39:43,719 INFO L168 Benchmark]: Toolchain (without parser) took 1508.56 ms. Allocated memory was 34.6 MB in the beginning and 45.6 MB in the end (delta: 11.0 MB). Free memory was 16.1 MB in the beginning and 16.4 MB in the end (delta: -353.9 kB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:43,720 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 33.0 MB. Free memory was 10.4 MB in the beginning and 10.3 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. [2020-10-20 00:39:43,722 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.06 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 15.1 MB in the beginning and 24.6 MB in the end (delta: -9.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:43,723 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.38 ms. Allocated memory is still 43.5 MB. Free memory was 24.6 MB in the beginning and 22.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:43,724 INFO L168 Benchmark]: Boogie Preprocessor took 30.80 ms. Allocated memory is still 43.5 MB. Free memory was 22.6 MB in the beginning and 21.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:43,725 INFO L168 Benchmark]: RCFGBuilder took 363.65 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 20.9 MB in the beginning and 15.3 MB in the end (delta: 5.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:43,726 INFO L168 Benchmark]: TraceAbstraction took 666.96 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 14.8 MB in the beginning and 17.0 MB in the end (delta: -2.2 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:39:43,727 INFO L168 Benchmark]: Witness Printer took 6.49 ms. Allocated memory is still 45.6 MB. Free memory was 17.0 MB in the beginning and 16.4 MB in the end (delta: 574.0 kB). Peak memory consumption was 574.0 kB. Max. memory is 14.3 GB. [2020-10-20 00:39:43,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 33.0 MB. Free memory was 10.4 MB in the beginning and 10.3 MB in the end (delta: 44.0 kB). Peak memory consumption was 44.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 385.06 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 15.1 MB in the beginning and 24.6 MB in the end (delta: -9.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 44.38 ms. Allocated memory is still 43.5 MB. Free memory was 24.6 MB in the beginning and 22.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 30.80 ms. Allocated memory is still 43.5 MB. Free memory was 22.6 MB in the beginning and 21.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 363.65 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 20.9 MB in the beginning and 15.3 MB in the end (delta: 5.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 666.96 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 14.8 MB in the beginning and 17.0 MB in the end (delta: -2.2 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 6.49 ms. Allocated memory is still 45.6 MB. Free memory was 17.0 MB in the beginning and 16.4 MB in the end (delta: 574.0 kB). Peak memory consumption was 574.0 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 46, overapproximation of someBinaryArithmeticFLOAToperation at line 40, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L15] __int32_t signbit, w, exponent_less_127; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L21] signbit = w & 0x80000000 [L22] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L23] COND FALSE !(exponent_less_127 < 23) [L39] COND TRUE exponent_less_127 == 255 [L40] return x + x; [L55] float res = trunc_float(x); [L46] return x != x; [L58] COND TRUE !isnan_float(res) [L4] __assert_fail("0", "float_req_bl_1071.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:39:45,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:39:45,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:39:45,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:39:45,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:39:45,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:39:45,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:39:45,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:39:45,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:39:45,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:39:45,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:39:45,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:39:45,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:39:45,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:39:45,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:39:45,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:39:45,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:39:45,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:39:45,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:39:45,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:39:45,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:39:45,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:39:45,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:39:45,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:39:45,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:39:45,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:39:45,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:39:45,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:39:45,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:39:45,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:39:45,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:39:45,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:39:46,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:39:46,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:39:46,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:39:46,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:39:46,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:39:46,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:39:46,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:39:46,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:39:46,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:39:46,008 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:39:46,059 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:39:46,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:39:46,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:39:46,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:39:46,062 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:39:46,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:39:46,062 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:39:46,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:39:46,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:39:46,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:39:46,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:39:46,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:39:46,064 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:39:46,065 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:39:46,065 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:39:46,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:39:46,065 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:39:46,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:39:46,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:39:46,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:39:46,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:39:46,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:39:46,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:39:46,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:39:46,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:39:46,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:39:46,067 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:39:46,067 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:39:46,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:39:46,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:39:46,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:39:46,068 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 341305be8cf30067c8ef09b4a168f6c17078b23f [2020-10-20 00:39:46,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:39:46,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:39:46,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:39:46,284 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:39:46,284 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:39:46,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-10-20 00:39:46,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/717bc3bbd/55d8197d611e487983f65abb8053760a/FLAG6e9045ca2 [2020-10-20 00:39:46,888 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:39:46,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-10-20 00:39:46,896 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/717bc3bbd/55d8197d611e487983f65abb8053760a/FLAG6e9045ca2 [2020-10-20 00:39:47,158 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/717bc3bbd/55d8197d611e487983f65abb8053760a [2020-10-20 00:39:47,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:39:47,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:39:47,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:39:47,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:39:47,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:39:47,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:39:47" (1/1) ... [2020-10-20 00:39:47,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ba0a2c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:47, skipping insertion in model container [2020-10-20 00:39:47,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:39:47" (1/1) ... [2020-10-20 00:39:47,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:39:47,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:39:47,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:39:47,537 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:39:47,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:39:47,637 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:39:47,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:47 WrapperNode [2020-10-20 00:39:47,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:39:47,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:39:47,639 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:39:47,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:39:47,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:47" (1/1) ... [2020-10-20 00:39:47,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:47" (1/1) ... [2020-10-20 00:39:47,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:39:47,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:39:47,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:39:47,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:39:47,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:47" (1/1) ... [2020-10-20 00:39:47,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:47" (1/1) ... [2020-10-20 00:39:47,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:47" (1/1) ... [2020-10-20 00:39:47,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:47" (1/1) ... [2020-10-20 00:39:47,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:47" (1/1) ... [2020-10-20 00:39:47,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:47" (1/1) ... [2020-10-20 00:39:47,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:47" (1/1) ... [2020-10-20 00:39:47,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:39:47,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:39:47,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:39:47,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:39:47,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:39:47,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:39:47,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:39:47,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-10-20 00:39:47,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:39:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:39:47,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:39:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-20 00:39:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:39:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:39:48,196 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:39:48,196 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:39:48,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:39:48 BoogieIcfgContainer [2020-10-20 00:39:48,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:39:48,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:39:48,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:39:48,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:39:48,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:39:47" (1/3) ... [2020-10-20 00:39:48,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3aa1d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:39:48, skipping insertion in model container [2020-10-20 00:39:48,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:39:47" (2/3) ... [2020-10-20 00:39:48,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3aa1d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:39:48, skipping insertion in model container [2020-10-20 00:39:48,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:39:48" (3/3) ... [2020-10-20 00:39:48,208 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2020-10-20 00:39:48,223 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:39:48,231 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:39:48,250 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:39:48,281 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:39:48,282 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:39:48,282 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:39:48,282 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:39:48,283 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:39:48,283 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:39:48,283 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:39:48,283 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:39:48,300 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-20 00:39:48,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:39:48,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:39:48,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:39:48,309 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:39:48,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:39:48,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1945097259, now seen corresponding path program 1 times [2020-10-20 00:39:48,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:39:48,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734891805] [2020-10-20 00:39:48,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 00:39:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:39:48,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:39:48,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:39:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:39:48,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:39:48,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:39:48,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734891805] [2020-10-20 00:39:48,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:39:48,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:39:48,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871846433] [2020-10-20 00:39:48,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:39:48,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:39:48,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:39:48,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:39:48,522 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-10-20 00:39:48,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:39:48,542 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-10-20 00:39:48,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:39:48,543 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-20 00:39:48,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:39:48,554 INFO L225 Difference]: With dead ends: 41 [2020-10-20 00:39:48,554 INFO L226 Difference]: Without dead ends: 18 [2020-10-20 00:39:48,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:39:48,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-20 00:39:48,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-20 00:39:48,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 00:39:48,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-10-20 00:39:48,595 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2020-10-20 00:39:48,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:39:48,595 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-10-20 00:39:48,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:39:48,595 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-10-20 00:39:48,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:39:48,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:39:48,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:39:48,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:39:48,807 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:39:48,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:39:48,809 INFO L82 PathProgramCache]: Analyzing trace with hash -390209938, now seen corresponding path program 1 times [2020-10-20 00:39:48,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:39:48,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068150160] [2020-10-20 00:39:48,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 00:39:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:39:48,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 00:39:48,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:39:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:39:49,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:39:49,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:39:49,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068150160] [2020-10-20 00:39:49,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:39:49,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2020-10-20 00:39:49,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480095135] [2020-10-20 00:39:49,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 00:39:49,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:39:49,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 00:39:49,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:39:49,068 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2020-10-20 00:39:49,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:39:49,163 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-10-20 00:39:49,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:39:49,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-20 00:39:49,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:39:49,165 INFO L225 Difference]: With dead ends: 29 [2020-10-20 00:39:49,166 INFO L226 Difference]: Without dead ends: 24 [2020-10-20 00:39:49,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:39:49,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-20 00:39:49,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2020-10-20 00:39:49,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 00:39:49,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-10-20 00:39:49,172 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 11 [2020-10-20 00:39:49,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:39:49,172 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-10-20 00:39:49,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 00:39:49,172 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-10-20 00:39:49,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:39:49,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:39:49,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:39:49,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:39:49,379 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:39:49,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:39:49,380 INFO L82 PathProgramCache]: Analyzing trace with hash 843742638, now seen corresponding path program 1 times [2020-10-20 00:39:49,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:39:49,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045566653] [2020-10-20 00:39:49,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-20 00:39:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:39:49,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 00:39:49,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:39:49,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:39:49,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:39:49,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:39:49,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045566653] [2020-10-20 00:39:49,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:39:49,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-10-20 00:39:49,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226062434] [2020-10-20 00:39:49,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 00:39:49,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:39:49,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 00:39:49,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:39:49,647 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 10 states. [2020-10-20 00:39:49,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:39:49,948 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-10-20 00:39:49,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 00:39:49,949 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-10-20 00:39:49,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:39:49,950 INFO L225 Difference]: With dead ends: 24 [2020-10-20 00:39:49,952 INFO L226 Difference]: Without dead ends: 17 [2020-10-20 00:39:49,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-20 00:39:49,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-20 00:39:49,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-20 00:39:49,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-20 00:39:49,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-20 00:39:49,960 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 12 [2020-10-20 00:39:49,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:39:49,961 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-20 00:39:49,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 00:39:49,962 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-20 00:39:49,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:39:49,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:39:49,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:39:50,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 00:39:50,176 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:39:50,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:39:50,177 INFO L82 PathProgramCache]: Analyzing trace with hash -2105231138, now seen corresponding path program 1 times [2020-10-20 00:39:50,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:39:50,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313952715] [2020-10-20 00:39:50,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-20 00:39:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:39:50,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 00:39:50,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:39:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:39:50,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:39:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:39:50,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313952715] [2020-10-20 00:39:50,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:39:50,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-20 00:39:50,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314463853] [2020-10-20 00:39:50,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 00:39:50,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:39:50,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 00:39:50,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:39:50,512 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 8 states. [2020-10-20 00:39:50,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:39:50,675 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-10-20 00:39:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:39:50,675 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-20 00:39:50,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:39:50,676 INFO L225 Difference]: With dead ends: 17 [2020-10-20 00:39:50,676 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:39:50,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:39:50,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:39:50,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:39:50,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:39:50,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:39:50,679 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-10-20 00:39:50,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:39:50,680 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:39:50,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 00:39:50,680 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:39:50,682 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:39:50,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 00:39:50,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:39:50,999 INFO L274 CegarLoopResult]: For program point L23(lines 23 41) no Hoare annotation was computed. [2020-10-20 00:39:51,000 INFO L274 CegarLoopResult]: For program point L23-1(lines 23 41) no Hoare annotation was computed. [2020-10-20 00:39:51,000 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:39:51,000 INFO L274 CegarLoopResult]: For program point L32-1(lines 32 36) no Hoare annotation was computed. [2020-10-20 00:39:51,000 INFO L270 CegarLoopResult]: At program point L32-2(lines 32 36) the Hoare annotation is: false [2020-10-20 00:39:51,000 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:39:51,000 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:39:51,001 INFO L274 CegarLoopResult]: For program point L24(lines 24 37) no Hoare annotation was computed. [2020-10-20 00:39:51,001 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-20 00:39:51,001 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2020-10-20 00:39:51,001 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 20) the Hoare annotation is: (not (fp.eq ULTIMATE.start_trunc_float_~x ULTIMATE.start_trunc_float_~x)) [2020-10-20 00:39:51,002 INFO L274 CegarLoopResult]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2020-10-20 00:39:51,002 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-20 00:39:51,002 INFO L274 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-10-20 00:39:51,002 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:39:51,002 INFO L274 CegarLoopResult]: For program point L58(lines 58 61) no Hoare annotation was computed. [2020-10-20 00:39:51,011 INFO L270 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (and (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_trunc_float_~exponent_less_127~0)) (not (fp.eq ULTIMATE.start_trunc_float_~x ULTIMATE.start_trunc_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq |ULTIMATE.start_trunc_float_#res| |ULTIMATE.start_trunc_float_#res|))) [2020-10-20 00:39:51,011 INFO L270 CegarLoopResult]: At program point L42(lines 14 43) the Hoare annotation is: (and (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_trunc_float_~exponent_less_127~0)) (not (fp.eq ULTIMATE.start_trunc_float_~x ULTIMATE.start_trunc_float_~x)) (not (fp.eq |ULTIMATE.start_trunc_float_#res| |ULTIMATE.start_trunc_float_#res|))) [2020-10-20 00:39:51,012 INFO L277 CegarLoopResult]: At program point L63(lines 48 64) the Hoare annotation is: true [2020-10-20 00:39:51,012 INFO L274 CegarLoopResult]: For program point L26-1(lines 26 30) no Hoare annotation was computed. [2020-10-20 00:39:51,012 INFO L270 CegarLoopResult]: At program point L26-2(lines 26 30) the Hoare annotation is: false [2020-10-20 00:39:51,012 INFO L274 CegarLoopResult]: For program point L39(lines 39 40) no Hoare annotation was computed. [2020-10-20 00:39:51,022 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-10-20 00:39:51,029 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-10-20 00:39:51,030 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-10-20 00:39:51,031 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-10-20 00:39:51,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:39:51 BoogieIcfgContainer [2020-10-20 00:39:51,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:39:51,035 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:39:51,035 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:39:51,035 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:39:51,036 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:39:48" (3/4) ... [2020-10-20 00:39:51,040 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:39:51,052 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-10-20 00:39:51,053 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-20 00:39:51,053 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 00:39:51,053 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:39:51,083 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(\result, \result) [2020-10-20 00:39:51,084 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(\result, \result) [2020-10-20 00:39:51,108 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:39:51,109 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:39:51,111 INFO L168 Benchmark]: Toolchain (without parser) took 3947.23 ms. Allocated memory was 43.5 MB in the beginning and 51.4 MB in the end (delta: 7.9 MB). Free memory was 24.3 MB in the beginning and 29.4 MB in the end (delta: -5.1 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:51,112 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 32.5 MB. Free memory was 11.5 MB in the beginning and 11.5 MB in the end (delta: 52.3 kB). Peak memory consumption was 52.3 kB. Max. memory is 14.3 GB. [2020-10-20 00:39:51,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 469.27 ms. Allocated memory is still 43.5 MB. Free memory was 23.5 MB in the beginning and 24.5 MB in the end (delta: -999.3 kB). Peak memory consumption was 14.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:51,113 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.08 ms. Allocated memory is still 43.5 MB. Free memory was 24.3 MB in the beginning and 22.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:51,114 INFO L168 Benchmark]: Boogie Preprocessor took 65.75 ms. Allocated memory is still 43.5 MB. Free memory was 22.5 MB in the beginning and 20.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:51,115 INFO L168 Benchmark]: RCFGBuilder took 413.83 ms. Allocated memory was 43.5 MB in the beginning and 46.7 MB in the end (delta: 3.1 MB). Free memory was 20.7 MB in the beginning and 23.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 12.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:51,116 INFO L168 Benchmark]: TraceAbstraction took 2834.59 ms. Allocated memory was 46.7 MB in the beginning and 51.4 MB in the end (delta: 4.7 MB). Free memory was 23.1 MB in the beginning and 33.3 MB in the end (delta: -10.2 MB). Peak memory consumption was 17.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:51,116 INFO L168 Benchmark]: Witness Printer took 74.28 ms. Allocated memory is still 51.4 MB. Free memory was 33.3 MB in the beginning and 29.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:39:51,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 32.5 MB. Free memory was 11.5 MB in the beginning and 11.5 MB in the end (delta: 52.3 kB). Peak memory consumption was 52.3 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 469.27 ms. Allocated memory is still 43.5 MB. Free memory was 23.5 MB in the beginning and 24.5 MB in the end (delta: -999.3 kB). Peak memory consumption was 14.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 79.08 ms. Allocated memory is still 43.5 MB. Free memory was 24.3 MB in the beginning and 22.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 65.75 ms. Allocated memory is still 43.5 MB. Free memory was 22.5 MB in the beginning and 20.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 413.83 ms. Allocated memory was 43.5 MB in the beginning and 46.7 MB in the end (delta: 3.1 MB). Free memory was 20.7 MB in the beginning and 23.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 12.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2834.59 ms. Allocated memory was 46.7 MB in the beginning and 51.4 MB in the end (delta: 4.7 MB). Free memory was 23.1 MB in the beginning and 33.3 MB in the end (delta: -10.2 MB). Peak memory consumption was 17.3 MB. Max. memory is 14.3 GB. * Witness Printer took 74.28 ms. Allocated memory is still 51.4 MB. Free memory was 33.3 MB in the beginning and 29.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 48]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant [2020-10-20 00:39:51,130 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-10-20 00:39:51,131 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] Derived loop invariant: ((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant [2020-10-20 00:39:51,131 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-10-20 00:39:51,132 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] Derived loop invariant: (((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 36 SDslu, 88 SDs, 0 SdLazy, 46 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 48 HoareAnnotationTreeSize, 6 FomulaSimplifications, 32 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 86 ConstructedInterpolants, 14 QuantifiedInterpolants, 3257 SizeOfPredicates, 21 NumberOfNonLiveVariables, 190 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...