./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0621a.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_0621a.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 c46c21346fa3a14a7874ed8ff9a4a0a79ae6f208 ............................................................................................................................................................................................................................................................................................................... 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_0621a.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 c46c21346fa3a14a7874ed8ff9a4a0a79ae6f208 .................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:35:17,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:35:17,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:35:17,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:35:17,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:35:17,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:35:17,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:35:17,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:35:17,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:35:17,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:35:17,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:35:17,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:35:17,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:35:17,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:35:18,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:35:18,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:35:18,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:35:18,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:35:18,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:35:18,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:35:18,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:35:18,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:35:18,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:35:18,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:35:18,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:35:18,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:35:18,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:35:18,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:35:18,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:35:18,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:35:18,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:35:18,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:35:18,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:35:18,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:35:18,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:35:18,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:35:18,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:35:18,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:35:18,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:35:18,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:35:18,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:35:18,051 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:35:18,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:35:18,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:35:18,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:35:18,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:35:18,090 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:35:18,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:35:18,091 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:35:18,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:35:18,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:35:18,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:35:18,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:35:18,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:35:18,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:35:18,094 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:35:18,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:35:18,095 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:35:18,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:35:18,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:35:18,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:35:18,096 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:35:18,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:35:18,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:35:18,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:35:18,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:35:18,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:35:18,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:35:18,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:35:18,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:35:18,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:35:18,098 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 -> c46c21346fa3a14a7874ed8ff9a4a0a79ae6f208 [2020-10-20 00:35:18,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:35:18,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:35:18,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:35:18,327 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:35:18,328 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:35:18,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0621a.c [2020-10-20 00:35:18,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/632004614/3e20d149fa504dca946ef29c0fb09eb2/FLAGfc0785ff8 [2020-10-20 00:35:18,975 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:35:18,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0621a.c [2020-10-20 00:35:18,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/632004614/3e20d149fa504dca946ef29c0fb09eb2/FLAGfc0785ff8 [2020-10-20 00:35:19,207 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/632004614/3e20d149fa504dca946ef29c0fb09eb2 [2020-10-20 00:35:19,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:35:19,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:35:19,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:35:19,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:35:19,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:35:19,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:35:19" (1/1) ... [2020-10-20 00:35:19,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248d2965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:19, skipping insertion in model container [2020-10-20 00:35:19,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:35:19" (1/1) ... [2020-10-20 00:35:19,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:35:19,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:35:19,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:35:19,562 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:35:19,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:35:19,624 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:35:19,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:19 WrapperNode [2020-10-20 00:35:19,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:35:19,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:35:19,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:35:19,626 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:35:19,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:19" (1/1) ... [2020-10-20 00:35:19,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:19" (1/1) ... [2020-10-20 00:35:19,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:35:19,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:35:19,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:35:19,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:35:19,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:19" (1/1) ... [2020-10-20 00:35:19,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:19" (1/1) ... [2020-10-20 00:35:19,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:19" (1/1) ... [2020-10-20 00:35:19,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:19" (1/1) ... [2020-10-20 00:35:19,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:19" (1/1) ... [2020-10-20 00:35:19,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:19" (1/1) ... [2020-10-20 00:35:19,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:19" (1/1) ... [2020-10-20 00:35:19,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:35:19,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:35:19,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:35:19,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:35:19,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:19" (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 00:35:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:35:19,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:35:19,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:35:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:35:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:35:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:35:19,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:35:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:35:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-20 00:35:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:35:20,259 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:35:20,259 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:35:20,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:35:20 BoogieIcfgContainer [2020-10-20 00:35:20,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:35:20,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:35:20,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:35:20,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:35:20,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:35:19" (1/3) ... [2020-10-20 00:35:20,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfbbcbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:35:20, skipping insertion in model container [2020-10-20 00:35:20,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:19" (2/3) ... [2020-10-20 00:35:20,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfbbcbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:35:20, skipping insertion in model container [2020-10-20 00:35:20,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:35:20" (3/3) ... [2020-10-20 00:35:20,271 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0621a.c [2020-10-20 00:35:20,284 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:35:20,290 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:35:20,300 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:35:20,327 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:35:20,327 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:35:20,327 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:35:20,328 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:35:20,328 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:35:20,328 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:35:20,329 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:35:20,329 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:35:20,345 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-20 00:35:20,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:35:20,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:35:20,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:35:20,353 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:35:20,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:35:20,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1906423550, now seen corresponding path program 1 times [2020-10-20 00:35:20,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:35:20,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812177721] [2020-10-20 00:35:20,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:35:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:35:20,540 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 00:35:20,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812177721] [2020-10-20 00:35:20,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:35:20,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:35:20,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59235394] [2020-10-20 00:35:20,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:35:20,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:35:20,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:35:20,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:35:20,568 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-20 00:35:20,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:35:20,591 INFO L93 Difference]: Finished difference Result 63 states and 97 transitions. [2020-10-20 00:35:20,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:35:20,609 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 00:35:20,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:35:20,627 INFO L225 Difference]: With dead ends: 63 [2020-10-20 00:35:20,628 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 00:35:20,632 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 00:35:20,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 00:35:20,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-20 00:35:20,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 00:35:20,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2020-10-20 00:35:20,666 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 9 [2020-10-20 00:35:20,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:35:20,667 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2020-10-20 00:35:20,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:35:20,667 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2020-10-20 00:35:20,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:35:20,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:35:20,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:35:20,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:35:20,669 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:35:20,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:35:20,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1481927263, now seen corresponding path program 1 times [2020-10-20 00:35:20,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:35:20,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425953704] [2020-10-20 00:35:20,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:35:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:35:20,749 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:35:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:35:20,845 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:35:20,896 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:35:20,896 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:35:20,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:35:20,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:35:20 BoogieIcfgContainer [2020-10-20 00:35:20,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:35:20,940 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:35:20,940 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:35:20,941 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:35:20,941 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:35:20" (3/4) ... [2020-10-20 00:35:20,944 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:35:20,944 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:35:20,947 INFO L168 Benchmark]: Toolchain (without parser) took 1733.20 ms. Allocated memory was 41.9 MB in the beginning and 45.6 MB in the end (delta: 3.7 MB). Free memory was 22.1 MB in the beginning and 9.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 16.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:20,948 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 32.0 MB. Free memory was 10.6 MB in the beginning and 10.5 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. [2020-10-20 00:35:20,949 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.02 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 21.2 MB in the beginning and 19.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 12.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:20,950 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.69 ms. Allocated memory is still 42.5 MB. Free memory was 19.2 MB in the beginning and 16.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:20,951 INFO L168 Benchmark]: Boogie Preprocessor took 43.87 ms. Allocated memory is still 42.5 MB. Free memory was 16.7 MB in the beginning and 14.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:20,952 INFO L168 Benchmark]: RCFGBuilder took 532.98 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 14.5 MB in the beginning and 26.5 MB in the end (delta: -12.0 MB). Peak memory consumption was 6.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:20,953 INFO L168 Benchmark]: TraceAbstraction took 676.80 ms. Allocated memory was 44.6 MB in the beginning and 45.6 MB in the end (delta: 1.0 MB). Free memory was 26.0 MB in the beginning and 9.5 MB in the end (delta: 16.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:20,954 INFO L168 Benchmark]: Witness Printer took 4.44 ms. Allocated memory is still 45.6 MB. Free memory was 9.5 MB in the beginning and 9.2 MB in the end (delta: 314.0 kB). Peak memory consumption was 314.0 kB. Max. memory is 14.3 GB. [2020-10-20 00:35:20,959 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 32.0 MB. Free memory was 10.6 MB in the beginning and 10.5 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 405.02 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 21.2 MB in the beginning and 19.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 12.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 58.69 ms. Allocated memory is still 42.5 MB. Free memory was 19.2 MB in the beginning and 16.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 43.87 ms. Allocated memory is still 42.5 MB. Free memory was 16.7 MB in the beginning and 14.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 532.98 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 14.5 MB in the beginning and 26.5 MB in the end (delta: -12.0 MB). Peak memory consumption was 6.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 676.80 ms. Allocated memory was 44.6 MB in the beginning and 45.6 MB in the end (delta: 1.0 MB). Free memory was 26.0 MB in the beginning and 9.5 MB in the end (delta: 16.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 14.3 GB. * Witness Printer took 4.44 ms. Allocated memory is still 45.6 MB. Free memory was 9.5 MB in the beginning and 9.2 MB in the end (delta: 314.0 kB). Peak memory consumption was 314.0 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 132, overapproximation of someUnaryDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 67, overapproximation of someBinaryArithmeticFLOAToperation at line 70. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L34-L39] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L41-L46] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L48-L52] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L54-L56] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L129] float x = 1.0f / 0.0f; [L59] float w, s1, s2, z; [L60] __int32_t ix, hx, id; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L63] ieee_float_shape_type gf_u; [L64] gf_u.value = (x) [L65] EXPR gf_u.word [L65] (hx) = gf_u.word [L67] ix = hx & 0x7fffffff VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L68] COND TRUE ix >= 0x50800000 VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L69] COND TRUE ((ix) > 0x7f800000L) [L70] return x + x; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L130] float res = atan_float(x); [L132] COND TRUE res != pi_o_2 VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L3] __assert_fail("0", "float_req_bl_0621a.c", 3, "reach_error") VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 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: 42 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=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 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 00:35:23,055 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-20 00:35:23,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:35:23,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:35:23,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:35:23,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:35:23,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:35:23,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:35:23,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:35:23,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:35:23,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:35:23,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:35:23,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:35:23,120 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:35:23,157 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:35:23,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:35:23,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:35:23,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:35:23,159 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:35:23,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:35:23,160 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:35:23,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:35:23,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:35:23,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:35:23,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:35:23,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:35:23,161 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:35:23,161 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:35:23,161 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:35:23,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:35:23,162 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:35:23,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:35:23,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:35:23,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:35:23,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:35:23,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:35:23,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:35:23,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:35:23,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:35:23,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:35:23,164 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:35:23,165 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:35:23,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:35:23,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:35:23,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:35:23,166 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 -> c46c21346fa3a14a7874ed8ff9a4a0a79ae6f208 [2020-10-20 00:35:23,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:35:23,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:35:23,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:35:23,386 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:35:23,386 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:35:23,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0621a.c [2020-10-20 00:35:23,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda1432df/6d1b582a4db74ffb90c28f84228adb73/FLAG6377e138a [2020-10-20 00:35:23,923 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:35:23,924 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0621a.c [2020-10-20 00:35:23,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda1432df/6d1b582a4db74ffb90c28f84228adb73/FLAG6377e138a [2020-10-20 00:35:24,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda1432df/6d1b582a4db74ffb90c28f84228adb73 [2020-10-20 00:35:24,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:35:24,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:35:24,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:35:24,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:35:24,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:35:24,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:35:24" (1/1) ... [2020-10-20 00:35:24,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c5c13c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:24, skipping insertion in model container [2020-10-20 00:35:24,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:35:24" (1/1) ... [2020-10-20 00:35:24,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:35:24,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:35:24,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:35:24,689 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:35:24,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:35:24,773 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:35:24,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:24 WrapperNode [2020-10-20 00:35:24,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:35:24,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:35:24,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:35:24,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:35:24,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:24" (1/1) ... [2020-10-20 00:35:24,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:24" (1/1) ... [2020-10-20 00:35:24,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:35:24,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:35:24,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:35:24,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:35:24,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:24" (1/1) ... [2020-10-20 00:35:24,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:24" (1/1) ... [2020-10-20 00:35:24,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:24" (1/1) ... [2020-10-20 00:35:24,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:24" (1/1) ... [2020-10-20 00:35:24,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:24" (1/1) ... [2020-10-20 00:35:24,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:24" (1/1) ... [2020-10-20 00:35:24,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:24" (1/1) ... [2020-10-20 00:35:24,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:35:24,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:35:24,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:35:24,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:35:24,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:24" (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 00:35:25,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-10-20 00:35:25,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:35:25,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:35:25,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-10-20 00:35:25,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:35:25,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:35:25,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:35:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-20 00:35:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:35:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:35:33,324 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:35:33,325 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:35:33,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:35:33 BoogieIcfgContainer [2020-10-20 00:35:33,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:35:33,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:35:33,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:35:33,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:35:33,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:35:24" (1/3) ... [2020-10-20 00:35:33,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cee9276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:35:33, skipping insertion in model container [2020-10-20 00:35:33,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:35:24" (2/3) ... [2020-10-20 00:35:33,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cee9276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:35:33, skipping insertion in model container [2020-10-20 00:35:33,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:35:33" (3/3) ... [2020-10-20 00:35:33,337 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0621a.c [2020-10-20 00:35:33,350 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:35:33,357 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:35:33,368 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:35:33,394 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:35:33,395 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:35:33,395 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:35:33,395 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:35:33,395 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:35:33,396 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:35:33,396 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:35:33,396 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:35:33,413 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-20 00:35:33,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:35:33,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:35:33,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:35:33,422 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:35:33,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:35:33,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1906423550, now seen corresponding path program 1 times [2020-10-20 00:35:33,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:35:33,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474502723] [2020-10-20 00:35:33,441 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 00:35:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:35:34,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:35:34,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:35:34,410 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 00:35:34,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:35:34,415 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 00:35:34,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474502723] [2020-10-20 00:35:34,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:35:34,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:35:34,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944958356] [2020-10-20 00:35:34,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:35:34,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:35:34,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:35:34,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:35:34,438 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-20 00:35:34,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:35:34,457 INFO L93 Difference]: Finished difference Result 63 states and 97 transitions. [2020-10-20 00:35:34,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:35:34,459 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 00:35:34,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:35:34,470 INFO L225 Difference]: With dead ends: 63 [2020-10-20 00:35:34,471 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 00:35:34,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 00:35:34,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 00:35:34,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-20 00:35:34,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 00:35:34,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2020-10-20 00:35:34,516 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 9 [2020-10-20 00:35:34,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:35:34,516 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2020-10-20 00:35:34,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:35:34,517 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2020-10-20 00:35:34,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:35:34,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:35:34,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:35:34,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:35:34,720 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:35:34,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:35:34,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1481927263, now seen corresponding path program 1 times [2020-10-20 00:35:34,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:35:34,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589149021] [2020-10-20 00:35:34,722 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 00:35:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:35:35,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 00:35:35,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:35:35,769 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 00:35:35,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:35:35,894 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 00:35:35,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589149021] [2020-10-20 00:35:35,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:35:35,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-20 00:35:35,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837924308] [2020-10-20 00:35:35,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 00:35:35,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:35:35,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 00:35:35,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:35:35,899 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand 8 states. [2020-10-20 00:35:36,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:35:36,177 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2020-10-20 00:35:36,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:35:36,182 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-10-20 00:35:36,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:35:36,183 INFO L225 Difference]: With dead ends: 33 [2020-10-20 00:35:36,183 INFO L226 Difference]: Without dead ends: 12 [2020-10-20 00:35:36,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 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 00:35:36,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-20 00:35:36,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-20 00:35:36,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 00:35:36,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-10-20 00:35:36,188 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 10 [2020-10-20 00:35:36,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:35:36,189 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-10-20 00:35:36,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 00:35:36,189 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-10-20 00:35:36,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:35:36,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:35:36,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:35:36,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:35:36,406 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:35:36,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:35:36,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1305404355, now seen corresponding path program 1 times [2020-10-20 00:35:36,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:35:36,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757337093] [2020-10-20 00:35:36,409 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 00:35:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:35:37,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-20 00:35:37,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:35:37,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:35:37,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:35:38,372 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 39 [2020-10-20 00:35:38,374 INFO L350 Elim1Store]: treesize reduction 339, result has 16.7 percent of original size [2020-10-20 00:35:38,375 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 738 treesize of output 752 [2020-10-20 00:35:38,381 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-10-20 00:35:38,382 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:38,386 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 6, 2, 2, 2, 5, 2, 3, 2, 2, 2, 3, 2, 3, 2, 3, 2, 2, 1] term [2020-10-20 00:35:38,386 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:38,390 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 2, 3, 2, 2, 2, 3, 2, 3, 2, 3, 2, 2, 1] term [2020-10-20 00:35:38,390 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:38,393 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 2, 2, 2, 3, 2, 3, 2, 3, 2, 2, 1] term [2020-10-20 00:35:38,393 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:38,395 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 2, 3, 2, 3, 2, 3, 2, 2, 1] term [2020-10-20 00:35:38,396 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:38,400 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 2, 3, 1] term [2020-10-20 00:35:38,401 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:38,402 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 1] term [2020-10-20 00:35:38,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:38,404 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 1] term [2020-10-20 00:35:38,404 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:38,407 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 2, 3, 2, 3, 2, 2, 1] term [2020-10-20 00:35:38,408 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:38,409 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 2, 3, 2, 2, 1] term [2020-10-20 00:35:38,410 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:38,411 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 2, 2, 1] term [2020-10-20 00:35:38,412 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:38,413 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 1] term [2020-10-20 00:35:38,414 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:38,415 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 6, 2, 5, 1] term [2020-10-20 00:35:38,415 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:38,420 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:35:39,423 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 156 DAG size of output: 110 [2020-10-20 00:35:39,425 INFO L625 ElimStorePlain]: treesize reduction 2434, result has 8.3 percent of original size [2020-10-20 00:35:39,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757337093] [2020-10-20 00:35:39,438 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:35:39,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1081032151] [2020-10-20 00:35:39,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 00:35:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:35:46,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-20 00:35:46,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:35:46,771 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 39 [2020-10-20 00:35:46,772 INFO L350 Elim1Store]: treesize reduction 355, result has 16.1 percent of original size [2020-10-20 00:35:46,772 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 212 treesize of output 250 [2020-10-20 00:35:46,775 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-10-20 00:35:46,776 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:46,779 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 6, 2, 6, 2, 5, 1] term [2020-10-20 00:35:46,780 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:46,781 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 2, 5, 1] term [2020-10-20 00:35:46,781 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:46,782 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 2, 1] term [2020-10-20 00:35:46,783 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:46,786 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 2, 1] term [2020-10-20 00:35:46,787 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:35:46,788 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:35:47,441 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2020-10-20 00:35:47,443 INFO L625 ElimStorePlain]: treesize reduction 304, result has 34.9 percent of original size [2020-10-20 00:35:47,447 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:35:47,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096954461] [2020-10-20 00:35:47,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:35:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:35:47,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 00:35:47,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:35:47,951 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 33 [2020-10-20 00:35:47,955 INFO L350 Elim1Store]: treesize reduction 355, result has 14.5 percent of original size [2020-10-20 00:35:47,968 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 935 treesize of output 911 [2020-10-20 00:35:47,976 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:35:48,334 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 77 [2020-10-20 00:35:48,336 INFO L625 ElimStorePlain]: treesize reduction 730, result has 16.8 percent of original size [2020-10-20 00:35:48,339 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:35:48,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:35:48,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 00:35:48,340 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 00:35:48,340 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:35:48,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:35:48,981 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 00:35:48,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:35:48 BoogieIcfgContainer [2020-10-20 00:35:48,981 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:35:48,982 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:35:48,982 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:35:48,982 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:35:48,982 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:35:33" (3/4) ... [2020-10-20 00:35:48,985 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:35:48,986 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:35:48,987 INFO L168 Benchmark]: Toolchain (without parser) took 24630.77 ms. Allocated memory was 41.9 MB in the beginning and 59.2 MB in the end (delta: 17.3 MB). Free memory was 21.6 MB in the beginning and 41.3 MB in the end (delta: -19.7 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:35:48,988 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 32.0 MB. Free memory was 10.8 MB in the beginning and 10.8 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. [2020-10-20 00:35:48,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.60 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 20.7 MB in the beginning and 17.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:48,989 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.12 ms. Allocated memory is still 42.5 MB. Free memory was 17.1 MB in the beginning and 14.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:48,990 INFO L168 Benchmark]: Boogie Preprocessor took 103.66 ms. Allocated memory is still 42.5 MB. Free memory was 14.5 MB in the beginning and 12.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:48,991 INFO L168 Benchmark]: RCFGBuilder took 8382.85 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 12.0 MB in the beginning and 17.3 MB in the end (delta: -5.3 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:48,992 INFO L168 Benchmark]: TraceAbstraction took 15652.45 ms. Allocated memory was 44.6 MB in the beginning and 59.2 MB in the end (delta: 14.7 MB). Free memory was 16.7 MB in the beginning and 41.9 MB in the end (delta: -25.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:35:48,992 INFO L168 Benchmark]: Witness Printer took 3.95 ms. Allocated memory is still 59.2 MB. Free memory is still 41.3 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:35:48,997 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 32.0 MB. Free memory was 10.8 MB in the beginning and 10.8 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 411.60 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 20.7 MB in the beginning and 17.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 66.12 ms. Allocated memory is still 42.5 MB. Free memory was 17.1 MB in the beginning and 14.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 103.66 ms. Allocated memory is still 42.5 MB. Free memory was 14.5 MB in the beginning and 12.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 8382.85 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 12.0 MB in the beginning and 17.3 MB in the end (delta: -5.3 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 15652.45 ms. Allocated memory was 44.6 MB in the beginning and 59.2 MB in the end (delta: 14.7 MB). Free memory was 16.7 MB in the beginning and 41.9 MB in the end (delta: -25.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 14.3 GB. * Witness Printer took 3.95 ms. Allocated memory is still 59.2 MB. Free memory is still 41.3 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L34-L39] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L41-L46] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L48-L52] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L54-L56] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L129] float x = 1.0f / 0.0f; [L59] float w, s1, s2, z; [L60] __int32_t ix, hx, id; [L63] ieee_float_shape_type gf_u; [L64] gf_u.value = (x) [L65] EXPR gf_u.word [L65] (hx) = gf_u.word [L67] ix = hx & 0x7fffffff [L68] COND TRUE ix >= 0x50800000 [L69] COND FALSE !(((ix) > 0x7f800000L)) [L71] COND TRUE hx > 0 [L72] EXPR atanhi_atan[3] [L72] EXPR atanlo_atan[3] [L72] return atanhi_atan[3] + atanlo_atan[3]; [L130] float res = atan_float(x); [L132] COND TRUE res != pi_o_2 [L3] __assert_fail("0", "float_req_bl_0621a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 15.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 28 SDslu, 7 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 34 ConstructedInterpolants, 6 QuantifiedInterpolants, 1271 SizeOfPredicates, 8 NumberOfNonLiveVariables, 188 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...