./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 54858612 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_1.5.800.v20200727-1323.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_1.5.800.v20200727-1323.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 0.2.0-5485861 [2020-10-25 22:00:31,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:00:31,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:00:31,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:00:31,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:00:31,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:00:31,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:00:31,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:00:31,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:00:31,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:00:31,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:00:31,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:00:31,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:00:31,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:00:31,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:00:31,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:00:31,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:00:31,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:00:31,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:00:31,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:00:31,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:00:31,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:00:31,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:00:31,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:00:31,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:00:31,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:00:31,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:00:31,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:00:31,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:00:31,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:00:31,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:00:31,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:00:31,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:00:31,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:00:31,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:00:31,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:00:31,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:00:31,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:00:31,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:00:31,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:00:31,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:00:31,942 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:00:31,985 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:00:31,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:00:31,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:00:31,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:00:31,990 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:00:31,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:00:31,991 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:00:31,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:00:31,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:00:31,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:00:31,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:00:31,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:00:31,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:00:31,994 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:00:31,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:00:31,994 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:00:31,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:00:31,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:00:31,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:00:31,996 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:00:31,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:00:31,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:00:31,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:00:31,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:00:31,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:00:31,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:00:31,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:00:31,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:00:31,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:00:31,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 341305be8cf30067c8ef09b4a168f6c17078b23f [2020-10-25 22:00:32,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:00:32,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:00:32,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:00:32,512 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:00:32,514 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:00:32,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-10-25 22:00:32,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d608feca/515d2b083c0b4bd79f398dc7b3f4a7b9/FLAG9af97e904 [2020-10-25 22:00:33,208 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:00:33,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-10-25 22:00:33,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d608feca/515d2b083c0b4bd79f398dc7b3f4a7b9/FLAG9af97e904 [2020-10-25 22:00:33,567 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d608feca/515d2b083c0b4bd79f398dc7b3f4a7b9 [2020-10-25 22:00:33,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:00:33,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:00:33,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:00:33,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:00:33,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:00:33,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:00:33" (1/1) ... [2020-10-25 22:00:33,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b5976ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:33, skipping insertion in model container [2020-10-25 22:00:33,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:00:33" (1/1) ... [2020-10-25 22:00:33,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:00:33,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:00:33,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:00:33,845 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:00:33,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:00:33,887 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:00:33,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:33 WrapperNode [2020-10-25 22:00:33,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:00:33,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:00:33,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:00:33,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:00:33,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:33" (1/1) ... [2020-10-25 22:00:33,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:33" (1/1) ... [2020-10-25 22:00:33,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:00:33,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:00:33,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:00:33,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:00:33,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:33" (1/1) ... [2020-10-25 22:00:33,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:33" (1/1) ... [2020-10-25 22:00:33,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:33" (1/1) ... [2020-10-25 22:00:33,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:33" (1/1) ... [2020-10-25 22:00:33,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:33" (1/1) ... [2020-10-25 22:00:33,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:33" (1/1) ... [2020-10-25 22:00:33,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:33" (1/1) ... [2020-10-25 22:00:33,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:00:33,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:00:33,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:00:33,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:00:33,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:33" (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 [2020-10-25 22:00:34,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:00:34,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:00:34,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-25 22:00:34,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:00:34,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-25 22:00:34,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:00:34,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:00:34,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:00:34,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:00:34,602 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:00:34,603 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-25 22:00:34,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:34 BoogieIcfgContainer [2020-10-25 22:00:34,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:00:34,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:00:34,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:00:34,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:00:34,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:00:33" (1/3) ... [2020-10-25 22:00:34,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47eec9c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:00:34, skipping insertion in model container [2020-10-25 22:00:34,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:33" (2/3) ... [2020-10-25 22:00:34,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47eec9c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:00:34, skipping insertion in model container [2020-10-25 22:00:34,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:34" (3/3) ... [2020-10-25 22:00:34,620 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2020-10-25 22:00:34,640 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:00:34,647 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:00:34,670 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:00:34,722 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:00:34,723 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:00:34,723 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:00:34,724 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:00:34,724 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:00:34,724 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:00:34,724 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:00:34,725 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:00:34,744 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-25 22:00:34,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-25 22:00:34,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:34,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:34,756 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:34,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:34,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1945097259, now seen corresponding path program 1 times [2020-10-25 22:00:34,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:00:34,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952291213] [2020-10-25 22:00:34,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:00:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:00:34,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:34,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952291213] [2020-10-25 22:00:34,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:00:34,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 22:00:34,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036494516] [2020-10-25 22:00:34,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 22:00:34,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:00:35,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 22:00:35,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:00:35,011 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-10-25 22:00:35,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:00:35,033 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-10-25 22:00:35,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 22:00:35,034 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-25 22:00:35,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:00:35,045 INFO L225 Difference]: With dead ends: 41 [2020-10-25 22:00:35,045 INFO L226 Difference]: Without dead ends: 18 [2020-10-25 22:00:35,055 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 [2020-10-25 22:00:35,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-25 22:00:35,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-25 22:00:35,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-25 22:00:35,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-10-25 22:00:35,102 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2020-10-25 22:00:35,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:00:35,103 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-10-25 22:00:35,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 22:00:35,103 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-10-25 22:00:35,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 22:00:35,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:35,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:35,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:00:35,105 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:35,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:35,108 INFO L82 PathProgramCache]: Analyzing trace with hash -390209938, now seen corresponding path program 1 times [2020-10-25 22:00:35,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:00:35,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800607990] [2020-10-25 22:00:35,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:00:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:00:35,215 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:00:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:00:35,258 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:00:35,284 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 22:00:35,284 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 22:00:35,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 22:00:35,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:00:35 BoogieIcfgContainer [2020-10-25 22:00:35,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:00:35,322 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:00:35,322 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:00:35,323 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:00:35,323 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:34" (3/4) ... [2020-10-25 22:00:35,327 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 22:00:35,328 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:00:35,331 INFO L168 Benchmark]: Toolchain (without parser) took 1757.22 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.5 MB in the beginning and 36.9 MB in the end (delta: -11.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:35,332 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 48.2 MB. Free memory was 31.3 MB in the beginning and 31.3 MB in the end (delta: 39.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:00:35,333 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.97 ms. Allocated memory is still 48.2 MB. Free memory was 24.9 MB in the beginning and 28.2 MB in the end (delta: -3.3 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:35,334 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.40 ms. Allocated memory is still 48.2 MB. Free memory was 28.2 MB in the beginning and 26.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:35,335 INFO L168 Benchmark]: Boogie Preprocessor took 32.87 ms. Allocated memory is still 48.2 MB. Free memory was 26.5 MB in the beginning and 25.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:35,336 INFO L168 Benchmark]: RCFGBuilder took 641.00 ms. Allocated memory is still 48.2 MB. Free memory was 25.2 MB in the beginning and 22.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:35,337 INFO L168 Benchmark]: TraceAbstraction took 712.05 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 21.6 MB in the beginning and 37.3 MB in the end (delta: -15.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:00:35,338 INFO L168 Benchmark]: Witness Printer took 5.60 ms. Allocated memory is still 58.7 MB. Free memory was 37.3 MB in the beginning and 36.9 MB in the end (delta: 384.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:35,343 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 48.2 MB. Free memory was 31.3 MB in the beginning and 31.3 MB in the end (delta: 39.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 309.97 ms. Allocated memory is still 48.2 MB. Free memory was 24.9 MB in the beginning and 28.2 MB in the end (delta: -3.3 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.40 ms. Allocated memory is still 48.2 MB. Free memory was 28.2 MB in the beginning and 26.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.87 ms. Allocated memory is still 48.2 MB. Free memory was 26.5 MB in the beginning and 25.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 641.00 ms. Allocated memory is still 48.2 MB. Free memory was 25.2 MB in the beginning and 22.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 712.05 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 21.6 MB in the beginning and 37.3 MB in the end (delta: -15.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.60 ms. Allocated memory is still 58.7 MB. Free memory was 37.3 MB in the beginning and 36.9 MB in the end (delta: 384.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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, 0.1s 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 0.2.0-5485861 [2020-10-25 22:00:38,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:00:38,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:00:38,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:00:38,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:00:38,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:00:38,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:00:38,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:00:38,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:00:38,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:00:38,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:00:38,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:00:38,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:00:38,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:00:38,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:00:38,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:00:38,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:00:38,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:00:38,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:00:38,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:00:38,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:00:38,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:00:38,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:00:38,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:00:38,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:00:38,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:00:38,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:00:38,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:00:38,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:00:38,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:00:38,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:00:38,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:00:38,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:00:38,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:00:38,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:00:38,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:00:38,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:00:38,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:00:38,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:00:38,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:00:38,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:00:38,170 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 22:00:38,197 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:00:38,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:00:38,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:00:38,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:00:38,200 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:00:38,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:00:38,201 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:00:38,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:00:38,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:00:38,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:00:38,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:00:38,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:00:38,203 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 22:00:38,203 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 22:00:38,203 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:00:38,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:00:38,204 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:00:38,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:00:38,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:00:38,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:00:38,205 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:00:38,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:00:38,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:00:38,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:00:38,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:00:38,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:00:38,207 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 22:00:38,207 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 22:00:38,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:00:38,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:00:38,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 22:00:38,208 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 341305be8cf30067c8ef09b4a168f6c17078b23f [2020-10-25 22:00:38,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:00:38,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:00:38,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:00:38,623 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:00:38,624 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:00:38,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-10-25 22:00:38,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/260bab31a/9d31285284bd44259af990bed56673d4/FLAGa648e0988 [2020-10-25 22:00:39,380 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:00:39,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-10-25 22:00:39,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/260bab31a/9d31285284bd44259af990bed56673d4/FLAGa648e0988 [2020-10-25 22:00:39,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/260bab31a/9d31285284bd44259af990bed56673d4 [2020-10-25 22:00:39,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:00:39,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:00:39,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:00:39,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:00:39,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:00:39,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:00:39" (1/1) ... [2020-10-25 22:00:39,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75d632b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:39, skipping insertion in model container [2020-10-25 22:00:39,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:00:39" (1/1) ... [2020-10-25 22:00:39,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:00:39,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:00:39,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:00:39,938 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:00:39,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:00:39,987 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:00:39,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:39 WrapperNode [2020-10-25 22:00:39,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:00:39,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:00:39,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:00:39,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:00:40,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:39" (1/1) ... [2020-10-25 22:00:40,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:39" (1/1) ... [2020-10-25 22:00:40,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:00:40,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:00:40,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:00:40,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:00:40,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:39" (1/1) ... [2020-10-25 22:00:40,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:39" (1/1) ... [2020-10-25 22:00:40,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:39" (1/1) ... [2020-10-25 22:00:40,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:39" (1/1) ... [2020-10-25 22:00:40,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:39" (1/1) ... [2020-10-25 22:00:40,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:39" (1/1) ... [2020-10-25 22:00:40,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:39" (1/1) ... [2020-10-25 22:00:40,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:00:40,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:00:40,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:00:40,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:00:40,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:39" (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 [2020-10-25 22:00:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 22:00:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:00:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-10-25 22:00:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-25 22:00:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:00:40,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:00:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-25 22:00:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-25 22:00:40,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:00:40,531 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:00:40,532 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-25 22:00:40,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:40 BoogieIcfgContainer [2020-10-25 22:00:40,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:00:40,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:00:40,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:00:40,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:00:40,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:00:39" (1/3) ... [2020-10-25 22:00:40,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbc595e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:00:40, skipping insertion in model container [2020-10-25 22:00:40,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:00:39" (2/3) ... [2020-10-25 22:00:40,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbc595e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:00:40, skipping insertion in model container [2020-10-25 22:00:40,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:40" (3/3) ... [2020-10-25 22:00:40,546 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2020-10-25 22:00:40,561 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:00:40,568 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:00:40,584 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:00:40,614 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:00:40,614 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:00:40,614 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:00:40,615 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:00:40,615 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:00:40,615 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:00:40,615 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:00:40,616 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:00:40,644 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-25 22:00:40,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-25 22:00:40,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:40,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:40,653 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:40,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:40,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1945097259, now seen corresponding path program 1 times [2020-10-25 22:00:40,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 22:00:40,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184483421] [2020-10-25 22:00:40,677 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 [2020-10-25 22:00:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:00:40,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-25 22:00:40,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:00:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:40,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 22:00:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:40,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184483421] [2020-10-25 22:00:40,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:00:40,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-25 22:00:40,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108887026] [2020-10-25 22:00:40,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 22:00:40,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 22:00:40,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 22:00:40,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:00:40,940 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-10-25 22:00:40,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:00:40,966 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-10-25 22:00:40,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 22:00:40,968 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-25 22:00:40,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:00:40,999 INFO L225 Difference]: With dead ends: 41 [2020-10-25 22:00:41,002 INFO L226 Difference]: Without dead ends: 18 [2020-10-25 22:00:41,005 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 [2020-10-25 22:00:41,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-25 22:00:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-25 22:00:41,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-25 22:00:41,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-10-25 22:00:41,049 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2020-10-25 22:00:41,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:00:41,050 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-10-25 22:00:41,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 22:00:41,050 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-10-25 22:00:41,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 22:00:41,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:41,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:41,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 22:00:41,268 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:41,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:41,270 INFO L82 PathProgramCache]: Analyzing trace with hash -390209938, now seen corresponding path program 1 times [2020-10-25 22:00:41,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 22:00:41,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855136211] [2020-10-25 22:00:41,272 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 [2020-10-25 22:00:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:00:41,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-25 22:00:41,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:00:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:41,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 22:00:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:41,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855136211] [2020-10-25 22:00:41,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:00:41,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2020-10-25 22:00:41,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351496236] [2020-10-25 22:00:41,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:00:41,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 22:00:41,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:00:41,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:00:41,538 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2020-10-25 22:00:41,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:00:41,635 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-10-25 22:00:41,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:00:41,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-25 22:00:41,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:00:41,639 INFO L225 Difference]: With dead ends: 29 [2020-10-25 22:00:41,640 INFO L226 Difference]: Without dead ends: 24 [2020-10-25 22:00:41,641 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 [2020-10-25 22:00:41,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-25 22:00:41,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2020-10-25 22:00:41,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-25 22:00:41,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-10-25 22:00:41,652 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 11 [2020-10-25 22:00:41,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:00:41,653 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-10-25 22:00:41,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:00:41,653 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-10-25 22:00:41,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-25 22:00:41,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:41,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:41,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 22:00:41,865 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:41,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:41,867 INFO L82 PathProgramCache]: Analyzing trace with hash 843742638, now seen corresponding path program 1 times [2020-10-25 22:00:41,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 22:00:41,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246304456] [2020-10-25 22:00:41,869 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 [2020-10-25 22:00:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:00:41,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-25 22:00:41,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:00:42,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:42,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 22:00:42,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:42,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246304456] [2020-10-25 22:00:42,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:00:42,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-10-25 22:00:42,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67307797] [2020-10-25 22:00:42,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-25 22:00:42,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 22:00:42,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-25 22:00:42,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-25 22:00:42,150 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 10 states. [2020-10-25 22:00:42,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:00:42,533 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-10-25 22:00:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 22:00:42,534 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-10-25 22:00:42,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:00:42,535 INFO L225 Difference]: With dead ends: 24 [2020-10-25 22:00:42,535 INFO L226 Difference]: Without dead ends: 17 [2020-10-25 22:00:42,536 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 [2020-10-25 22:00:42,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-25 22:00:42,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-25 22:00:42,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-25 22:00:42,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-25 22:00:42,542 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 12 [2020-10-25 22:00:42,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:00:42,542 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-25 22:00:42,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-25 22:00:42,543 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-25 22:00:42,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 22:00:42,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:00:42,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:00:42,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-25 22:00:42,758 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:00:42,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:00:42,759 INFO L82 PathProgramCache]: Analyzing trace with hash -2105231138, now seen corresponding path program 1 times [2020-10-25 22:00:42,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 22:00:42,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762685090] [2020-10-25 22:00:42,760 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 [2020-10-25 22:00:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:00:42,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-25 22:00:42,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:00:42,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:42,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 22:00:43,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:00:43,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762685090] [2020-10-25 22:00:43,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:00:43,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-25 22:00:43,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89977578] [2020-10-25 22:00:43,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-25 22:00:43,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 22:00:43,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-25 22:00:43,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-25 22:00:43,088 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 8 states. [2020-10-25 22:00:43,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:00:43,238 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-10-25 22:00:43,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 22:00:43,239 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-25 22:00:43,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:00:43,239 INFO L225 Difference]: With dead ends: 17 [2020-10-25 22:00:43,239 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 22:00:43,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-25 22:00:43,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 22:00:43,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 22:00:43,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 22:00:43,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 22:00:43,241 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-10-25 22:00:43,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:00:43,242 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 22:00:43,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-25 22:00:43,242 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 22:00:43,242 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 22:00:43,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-25 22:00:43,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 22:00:43,582 INFO L274 CegarLoopResult]: For program point L23(lines 23 41) no Hoare annotation was computed. [2020-10-25 22:00:43,583 INFO L274 CegarLoopResult]: For program point L23-1(lines 23 41) no Hoare annotation was computed. [2020-10-25 22:00:43,583 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 22:00:43,583 INFO L274 CegarLoopResult]: For program point L32-1(lines 32 36) no Hoare annotation was computed. [2020-10-25 22:00:43,583 INFO L270 CegarLoopResult]: At program point L32-2(lines 32 36) the Hoare annotation is: false [2020-10-25 22:00:43,583 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 22:00:43,583 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 22:00:43,583 INFO L274 CegarLoopResult]: For program point L24(lines 24 37) no Hoare annotation was computed. [2020-10-25 22:00:43,584 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-25 22:00:43,584 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2020-10-25 22:00:43,584 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)) [2020-10-25 22:00:43,584 INFO L274 CegarLoopResult]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2020-10-25 22:00:43,585 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-25 22:00:43,585 INFO L274 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-10-25 22:00:43,585 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 22:00:43,585 INFO L274 CegarLoopResult]: For program point L58(lines 58 61) no Hoare annotation was computed. [2020-10-25 22:00:43,585 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|))) [2020-10-25 22:00:43,585 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|))) [2020-10-25 22:00:43,586 INFO L277 CegarLoopResult]: At program point L63(lines 48 64) the Hoare annotation is: true [2020-10-25 22:00:43,586 INFO L274 CegarLoopResult]: For program point L26-1(lines 26 30) no Hoare annotation was computed. [2020-10-25 22:00:43,586 INFO L270 CegarLoopResult]: At program point L26-2(lines 26 30) the Hoare annotation is: false [2020-10-25 22:00:43,586 INFO L274 CegarLoopResult]: For program point L39(lines 39 40) no Hoare annotation was computed. [2020-10-25 22:00:43,597 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-10-25 22:00:43,604 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-10-25 22:00:43,609 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-10-25 22:00:43,609 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-10-25 22:00:43,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:00:43 BoogieIcfgContainer [2020-10-25 22:00:43,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:00:43,614 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:00:43,614 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:00:43,614 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:00:43,615 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:00:40" (3/4) ... [2020-10-25 22:00:43,619 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 22:00:43,635 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-10-25 22:00:43,637 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-25 22:00:43,641 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-25 22:00:43,641 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:00:43,678 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) [2020-10-25 22:00:43,680 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) [2020-10-25 22:00:43,734 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:00:43,734 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:00:43,737 INFO L168 Benchmark]: Toolchain (without parser) took 4042.42 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 31.1 MB in the beginning and 25.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:43,738 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 37.7 MB. Free memory was 20.4 MB in the beginning and 20.3 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:00:43,740 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.80 ms. Allocated memory is still 46.1 MB. Free memory was 30.5 MB in the beginning and 19.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:43,741 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.13 ms. Allocated memory is still 46.1 MB. Free memory was 19.9 MB in the beginning and 30.2 MB in the end (delta: -10.3 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:43,742 INFO L168 Benchmark]: Boogie Preprocessor took 36.54 ms. Allocated memory is still 46.1 MB. Free memory was 30.0 MB in the beginning and 28.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:43,750 INFO L168 Benchmark]: RCFGBuilder took 458.19 ms. Allocated memory is still 46.1 MB. Free memory was 28.5 MB in the beginning and 22.1 MB in the end (delta: 6.5 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:43,751 INFO L168 Benchmark]: TraceAbstraction took 3077.16 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.7 MB in the beginning and 29.0 MB in the end (delta: -7.3 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:43,752 INFO L168 Benchmark]: Witness Printer took 120.65 ms. Allocated memory is still 56.6 MB. Free memory was 28.6 MB in the beginning and 25.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:00:43,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 37.7 MB. Free memory was 20.4 MB in the beginning and 20.3 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.80 ms. Allocated memory is still 46.1 MB. Free memory was 30.5 MB in the beginning and 19.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.13 ms. Allocated memory is still 46.1 MB. Free memory was 19.9 MB in the beginning and 30.2 MB in the end (delta: -10.3 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.54 ms. Allocated memory is still 46.1 MB. Free memory was 30.0 MB in the beginning and 28.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 458.19 ms. Allocated memory is still 46.1 MB. Free memory was 28.5 MB in the beginning and 22.1 MB in the end (delta: 6.5 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3077.16 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.7 MB in the beginning and 29.0 MB in the end (delta: -7.3 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Witness Printer took 120.65 ms. Allocated memory is still 56.6 MB. Free memory was 28.6 MB in the beginning and 25.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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 [2020-10-25 22:00:43,767 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-10-25 22:00:43,767 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 [2020-10-25 22:00:43,769 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-10-25 22:00:43,772 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: 2.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, 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, 0.2s 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...