./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-esbmc-regression/digits_while.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/floats-esbmc-regression/digits_while.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 4eb7ec87e4b26eecb67fe680444df008acb1d5ac2a26461a17b628d29f2e5ff2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 14:07:44,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 14:07:44,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 14:07:44,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 14:07:44,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 14:07:44,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 14:07:44,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 14:07:44,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 14:07:44,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 14:07:44,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 14:07:44,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 14:07:44,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 14:07:44,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 14:07:44,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 14:07:44,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 14:07:44,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 14:07:44,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 14:07:44,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 14:07:44,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 14:07:44,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 14:07:44,875 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 14:07:44,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 14:07:44,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 14:07:44,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 14:07:44,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 14:07:44,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 14:07:44,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 14:07:44,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 14:07:44,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 14:07:44,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 14:07:44,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 14:07:44,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 14:07:44,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 14:07:44,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 14:07:44,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 14:07:44,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 14:07:44,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 14:07:44,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 14:07:44,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 14:07:44,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 14:07:44,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 14:07:44,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 14:07:44,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 14:07:44,915 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 14:07:44,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 14:07:44,918 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 14:07:44,918 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 14:07:44,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 14:07:44,919 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 14:07:44,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 14:07:44,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 14:07:44,920 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 14:07:44,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 14:07:44,921 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 14:07:44,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 14:07:44,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 14:07:44,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 14:07:44,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 14:07:44,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 14:07:44,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 14:07:44,922 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 14:07:44,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 14:07:44,922 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 14:07:44,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 14:07:44,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 14:07:44,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 14:07:44,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 14:07:44,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:07:44,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 14:07:44,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 14:07:44,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 14:07:44,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 14:07:44,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 14:07:44,924 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 14:07:44,924 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 14:07:44,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 14:07:44,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eb7ec87e4b26eecb67fe680444df008acb1d5ac2a26461a17b628d29f2e5ff2 [2022-07-22 14:07:45,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 14:07:45,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 14:07:45,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 14:07:45,142 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 14:07:45,143 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 14:07:45,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/digits_while.c [2022-07-22 14:07:45,197 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d7545dca/078ef759b6b24bf791563829d42406c0/FLAGba3debe4b [2022-07-22 14:07:45,562 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 14:07:45,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_while.c [2022-07-22 14:07:45,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d7545dca/078ef759b6b24bf791563829d42406c0/FLAGba3debe4b [2022-07-22 14:07:46,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d7545dca/078ef759b6b24bf791563829d42406c0 [2022-07-22 14:07:46,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 14:07:46,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 14:07:46,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 14:07:46,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 14:07:46,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 14:07:46,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:07:46" (1/1) ... [2022-07-22 14:07:46,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d66097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:46, skipping insertion in model container [2022-07-22 14:07:46,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:07:46" (1/1) ... [2022-07-22 14:07:46,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 14:07:46,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 14:07:46,160 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_while.c[317,330] [2022-07-22 14:07:46,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:07:46,185 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 14:07:46,195 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_while.c[317,330] [2022-07-22 14:07:46,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:07:46,210 INFO L208 MainTranslator]: Completed translation [2022-07-22 14:07:46,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:46 WrapperNode [2022-07-22 14:07:46,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 14:07:46,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 14:07:46,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 14:07:46,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 14:07:46,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:46" (1/1) ... [2022-07-22 14:07:46,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:46" (1/1) ... [2022-07-22 14:07:46,236 INFO L137 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2022-07-22 14:07:46,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 14:07:46,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 14:07:46,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 14:07:46,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 14:07:46,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:46" (1/1) ... [2022-07-22 14:07:46,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:46" (1/1) ... [2022-07-22 14:07:46,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:46" (1/1) ... [2022-07-22 14:07:46,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:46" (1/1) ... [2022-07-22 14:07:46,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:46" (1/1) ... [2022-07-22 14:07:46,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:46" (1/1) ... [2022-07-22 14:07:46,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:46" (1/1) ... [2022-07-22 14:07:46,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 14:07:46,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 14:07:46,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 14:07:46,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 14:07:46,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:46" (1/1) ... [2022-07-22 14:07:46,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:07:46,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:07:46,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 14:07:46,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 14:07:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 14:07:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 14:07:46,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 14:07:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 14:07:46,366 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 14:07:46,367 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 14:07:46,454 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 14:07:46,458 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 14:07:46,458 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 14:07:46,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:07:46 BoogieIcfgContainer [2022-07-22 14:07:46,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 14:07:46,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 14:07:46,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 14:07:46,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 14:07:46,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 02:07:46" (1/3) ... [2022-07-22 14:07:46,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102c8eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:07:46, skipping insertion in model container [2022-07-22 14:07:46,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:46" (2/3) ... [2022-07-22 14:07:46,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102c8eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:07:46, skipping insertion in model container [2022-07-22 14:07:46,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:07:46" (3/3) ... [2022-07-22 14:07:46,466 INFO L111 eAbstractionObserver]: Analyzing ICFG digits_while.c [2022-07-22 14:07:46,475 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 14:07:46,476 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 14:07:46,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 14:07:46,511 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4094f145, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71e8fe74 [2022-07-22 14:07:46,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 14:07:46,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:07:46,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-22 14:07:46,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:07:46,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-22 14:07:46,519 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:07:46,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:07:46,522 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2022-07-22 14:07:46,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:07:46,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817927909] [2022-07-22 14:07:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:07:46,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:07:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 14:07:46,587 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 14:07:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 14:07:46,607 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 14:07:46,608 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 14:07:46,609 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 14:07:46,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 14:07:46,613 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-22 14:07:46,616 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 14:07:46,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 02:07:46 BoogieIcfgContainer [2022-07-22 14:07:46,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 14:07:46,631 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 14:07:46,631 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 14:07:46,631 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 14:07:46,632 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:07:46" (3/4) ... [2022-07-22 14:07:46,634 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 14:07:46,634 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 14:07:46,635 INFO L158 Benchmark]: Toolchain (without parser) took 624.01ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 71.8MB in the beginning and 82.6MB in the end (delta: -10.8MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2022-07-22 14:07:46,635 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 102.8MB. Free memory is still 56.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 14:07:46,636 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.86ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 71.5MB in the beginning and 107.7MB in the end (delta: -36.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 14:07:46,637 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.41ms. Allocated memory is still 132.1MB. Free memory was 107.7MB in the beginning and 106.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 14:07:46,637 INFO L158 Benchmark]: Boogie Preprocessor took 16.00ms. Allocated memory is still 132.1MB. Free memory was 106.2MB in the beginning and 105.3MB in the end (delta: 873.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 14:07:46,638 INFO L158 Benchmark]: RCFGBuilder took 205.46ms. Allocated memory is still 132.1MB. Free memory was 105.3MB in the beginning and 96.3MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-22 14:07:46,638 INFO L158 Benchmark]: TraceAbstraction took 170.00ms. Allocated memory is still 132.1MB. Free memory was 95.8MB in the beginning and 82.6MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-22 14:07:46,639 INFO L158 Benchmark]: Witness Printer took 2.84ms. Allocated memory is still 132.1MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 14:07:46,642 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 102.8MB. Free memory is still 56.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 199.86ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 71.5MB in the beginning and 107.7MB in the end (delta: -36.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.41ms. Allocated memory is still 132.1MB. Free memory was 107.7MB in the beginning and 106.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.00ms. Allocated memory is still 132.1MB. Free memory was 106.2MB in the beginning and 105.3MB in the end (delta: 873.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 205.46ms. Allocated memory is still 132.1MB. Free memory was 105.3MB in the beginning and 96.3MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 170.00ms. Allocated memory is still 132.1MB. Free memory was 95.8MB in the beginning and 82.6MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 2.84ms. Allocated memory is still 132.1MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 4]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryLONGDOUBLEComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 8. Possible FailurePath: [L8] long double x = 1.0/7.0; [L9] long long res = 0; [L11] int i = 1; VAL [i=1, res=0] [L12] COND FALSE !(x != 0) VAL [i=1, res=0] [L19] CALL __VERIFIER_assert(res == 67050) [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2022-07-22 14:07:46,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/floats-esbmc-regression/digits_while.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 4eb7ec87e4b26eecb67fe680444df008acb1d5ac2a26461a17b628d29f2e5ff2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 14:07:48,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 14:07:48,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 14:07:48,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 14:07:48,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 14:07:48,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 14:07:48,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 14:07:48,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 14:07:48,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 14:07:48,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 14:07:48,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 14:07:48,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 14:07:48,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 14:07:48,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 14:07:48,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 14:07:48,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 14:07:48,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 14:07:48,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 14:07:48,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 14:07:48,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 14:07:48,543 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 14:07:48,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 14:07:48,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 14:07:48,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 14:07:48,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 14:07:48,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 14:07:48,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 14:07:48,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 14:07:48,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 14:07:48,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 14:07:48,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 14:07:48,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 14:07:48,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 14:07:48,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 14:07:48,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 14:07:48,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 14:07:48,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 14:07:48,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 14:07:48,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 14:07:48,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 14:07:48,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 14:07:48,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 14:07:48,565 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-22 14:07:48,591 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 14:07:48,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 14:07:48,592 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 14:07:48,592 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 14:07:48,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 14:07:48,593 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 14:07:48,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 14:07:48,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 14:07:48,594 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 14:07:48,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 14:07:48,595 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 14:07:48,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 14:07:48,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 14:07:48,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 14:07:48,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 14:07:48,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 14:07:48,596 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 14:07:48,596 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 14:07:48,596 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 14:07:48,596 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 14:07:48,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 14:07:48,596 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 14:07:48,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 14:07:48,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 14:07:48,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 14:07:48,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 14:07:48,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:07:48,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 14:07:48,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 14:07:48,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 14:07:48,598 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 14:07:48,598 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 14:07:48,598 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 14:07:48,598 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 14:07:48,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 14:07:48,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 14:07:48,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eb7ec87e4b26eecb67fe680444df008acb1d5ac2a26461a17b628d29f2e5ff2 [2022-07-22 14:07:48,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 14:07:48,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 14:07:48,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 14:07:48,879 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 14:07:48,880 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 14:07:48,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/digits_while.c [2022-07-22 14:07:48,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5733e6417/c0f97490c58e4229a1b3d983080ec622/FLAG384752b4e [2022-07-22 14:07:49,318 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 14:07:49,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_while.c [2022-07-22 14:07:49,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5733e6417/c0f97490c58e4229a1b3d983080ec622/FLAG384752b4e [2022-07-22 14:07:49,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5733e6417/c0f97490c58e4229a1b3d983080ec622 [2022-07-22 14:07:49,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 14:07:49,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 14:07:49,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 14:07:49,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 14:07:49,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 14:07:49,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:07:49" (1/1) ... [2022-07-22 14:07:49,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d576e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:49, skipping insertion in model container [2022-07-22 14:07:49,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:07:49" (1/1) ... [2022-07-22 14:07:49,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 14:07:49,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 14:07:49,485 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_while.c[317,330] [2022-07-22 14:07:49,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:07:49,512 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 14:07:49,558 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/digits_while.c[317,330] [2022-07-22 14:07:49,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:07:49,574 INFO L208 MainTranslator]: Completed translation [2022-07-22 14:07:49,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:49 WrapperNode [2022-07-22 14:07:49,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 14:07:49,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 14:07:49,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 14:07:49,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 14:07:49,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:49" (1/1) ... [2022-07-22 14:07:49,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:49" (1/1) ... [2022-07-22 14:07:49,600 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2022-07-22 14:07:49,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 14:07:49,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 14:07:49,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 14:07:49,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 14:07:49,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:49" (1/1) ... [2022-07-22 14:07:49,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:49" (1/1) ... [2022-07-22 14:07:49,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:49" (1/1) ... [2022-07-22 14:07:49,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:49" (1/1) ... [2022-07-22 14:07:49,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:49" (1/1) ... [2022-07-22 14:07:49,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:49" (1/1) ... [2022-07-22 14:07:49,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:49" (1/1) ... [2022-07-22 14:07:49,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 14:07:49,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 14:07:49,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 14:07:49,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 14:07:49,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:49" (1/1) ... [2022-07-22 14:07:49,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:07:49,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:07:49,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 14:07:49,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 14:07:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 14:07:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 14:07:49,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 14:07:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 14:07:49,778 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 14:07:49,780 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 14:07:51,955 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 14:07:51,959 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 14:07:51,959 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 14:07:51,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:07:51 BoogieIcfgContainer [2022-07-22 14:07:51,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 14:07:51,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 14:07:51,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 14:07:51,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 14:07:51,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 02:07:49" (1/3) ... [2022-07-22 14:07:51,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d88201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:07:51, skipping insertion in model container [2022-07-22 14:07:51,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:07:49" (2/3) ... [2022-07-22 14:07:51,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d88201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:07:51, skipping insertion in model container [2022-07-22 14:07:51,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:07:51" (3/3) ... [2022-07-22 14:07:51,966 INFO L111 eAbstractionObserver]: Analyzing ICFG digits_while.c [2022-07-22 14:07:51,980 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 14:07:51,980 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 14:07:52,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 14:07:52,023 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5ce4433a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7636134a [2022-07-22 14:07:52,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 14:07:52,040 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:07:52,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-22 14:07:52,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:07:52,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-22 14:07:52,045 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:07:52,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:07:52,063 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2022-07-22 14:07:52,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:07:52,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126920839] [2022-07-22 14:07:52,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:07:52,073 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:07:52,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:07:52,099 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 14:07:52,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-22 14:07:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:07:52,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 14:07:52,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:07:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:07:52,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 14:07:52,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:07:52,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126920839] [2022-07-22 14:07:52,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126920839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:07:52,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:07:52,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 14:07:52,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044648575] [2022-07-22 14:07:52,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:07:52,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 14:07:52,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:07:52,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 14:07:52,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 14:07:52,256 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:07:54,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:07:55,874 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:07:55,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:07:55,961 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2022-07-22 14:07:55,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 14:07:55,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-22 14:07:55,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:07:55,968 INFO L225 Difference]: With dead ends: 20 [2022-07-22 14:07:55,968 INFO L226 Difference]: Without dead ends: 8 [2022-07-22 14:07:55,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 14:07:55,972 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-22 14:07:55,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-22 14:07:55,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-07-22 14:07:55,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-07-22 14:07:55,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:07:55,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-07-22 14:07:55,992 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-07-22 14:07:55,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:07:55,992 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-07-22 14:07:55,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:07:55,992 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-07-22 14:07:55,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 14:07:55,993 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:07:55,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:07:56,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-22 14:07:56,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:07:56,200 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:07:56,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:07:56,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2022-07-22 14:07:56,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:07:56,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306653483] [2022-07-22 14:07:56,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:07:56,202 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:07:56,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:07:56,204 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 14:07:56,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-22 14:07:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:07:56,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 14:07:56,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:07:57,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:07:57,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 14:08:04,174 WARN L833 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2022-07-22 14:08:06,229 WARN L855 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-07-22 14:08:06,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-07-22 14:08:06,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:08:06,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306653483] [2022-07-22 14:08:06,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306653483] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 14:08:06,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 14:08:06,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-07-22 14:08:06,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956308362] [2022-07-22 14:08:06,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 14:08:06,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 14:08:06,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:08:06,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 14:08:06,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=17, Unknown=2, NotChecked=8, Total=42 [2022-07-22 14:08:06,408 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:08:08,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:08:10,562 WARN L855 $PredicateComparison]: unable to prove that (and (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-22 14:08:12,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:08:12,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:08:12,837 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-07-22 14:08:12,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 14:08:12,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-22 14:08:12,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:08:12,840 INFO L225 Difference]: With dead ends: 13 [2022-07-22 14:08:12,840 INFO L226 Difference]: Without dead ends: 9 [2022-07-22 14:08:12,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=17, Invalid=18, Unknown=3, NotChecked=18, Total=56 [2022-07-22 14:08:12,841 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-22 14:08:12,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 11 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 2 Unknown, 6 Unchecked, 4.3s Time] [2022-07-22 14:08:12,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-22 14:08:12,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-22 14:08:12,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:08:12,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-07-22 14:08:12,844 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2022-07-22 14:08:12,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:08:12,844 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-07-22 14:08:12,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:08:12,844 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-07-22 14:08:12,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-22 14:08:12,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:08:12,844 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-07-22 14:08:12,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-22 14:08:13,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:08:13,046 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:08:13,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:08:13,047 INFO L85 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 2 times [2022-07-22 14:08:13,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:08:13,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647418770] [2022-07-22 14:08:13,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 14:08:13,048 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:08:13,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:08:13,050 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 14:08:13,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-22 14:08:14,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 14:08:14,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 14:08:14,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 14:08:14,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:08:32,895 WARN L233 SmtUtils]: Spent 6.42s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 14:08:32,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:08:32,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 14:08:39,160 WARN L833 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2022-07-22 14:08:41,226 WARN L855 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-07-22 14:08:47,619 WARN L833 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse0)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2022-07-22 14:08:49,753 WARN L855 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse0)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-07-22 14:08:56,019 WARN L833 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2022-07-22 14:08:58,106 WARN L855 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-07-22 14:08:58,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-07-22 14:08:58,107 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:08:58,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647418770] [2022-07-22 14:08:58,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647418770] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 14:08:58,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 14:08:58,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-07-22 14:08:58,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788566022] [2022-07-22 14:08:58,108 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 14:08:58,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 14:08:58,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:08:58,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 14:08:58,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=24, Unknown=7, NotChecked=36, Total=90 [2022-07-22 14:08:58,109 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:09:00,219 WARN L855 $PredicateComparison]: unable to prove that (and (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-22 14:09:02,364 WARN L855 $PredicateComparison]: unable to prove that (and (= ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))) |c_ULTIMATE.start_main_~x~0#1|) (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse0)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-22 14:09:04,446 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (and (= |c_ULTIMATE.start_main_~x~0#1| (let ((.cse0 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-07-22 14:09:06,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:09:06,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:09:06,760 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-07-22 14:09:06,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 14:09:06,761 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-22 14:09:06,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:09:06,762 INFO L225 Difference]: With dead ends: 14 [2022-07-22 14:09:06,762 INFO L226 Difference]: Without dead ends: 10 [2022-07-22 14:09:06,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 33.3s TimeCoverageRelationStatistics Valid=29, Invalid=27, Unknown=10, NotChecked=90, Total=156 [2022-07-22 14:09:06,763 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 14:09:06,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 17 Unchecked, 2.3s Time] [2022-07-22 14:09:06,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-22 14:09:06,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-22 14:09:06,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:09:06,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-07-22 14:09:06,766 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2022-07-22 14:09:06,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:09:06,766 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-07-22 14:09:06,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:09:06,766 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-07-22 14:09:06,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 14:09:06,766 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:09:06,767 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-07-22 14:09:06,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-22 14:09:06,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:09:06,983 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:09:06,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:09:06,984 INFO L85 PathProgramCache]: Analyzing trace with hash 492108272, now seen corresponding path program 3 times [2022-07-22 14:09:06,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:09:06,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814055163] [2022-07-22 14:09:06,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 14:09:06,985 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:09:06,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:09:06,986 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 14:09:06,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-22 14:09:08,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-22 14:09:08,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 14:09:08,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 14:09:08,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:09:16,585 WARN L855 $PredicateComparison]: unable to prove that (and (= (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-22 14:09:23,332 WARN L855 $PredicateComparison]: unable to prove that (and (= (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (let ((.cse3 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse3) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-22 14:09:23,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-07-22 14:09:23,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 14:09:29,636 WARN L833 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2022-07-22 14:09:31,714 WARN L855 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-07-22 14:09:38,197 WARN L833 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse0)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2022-07-22 14:09:40,344 WARN L855 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse0)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-07-22 14:09:46,954 WARN L833 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse2))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse0)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2022-07-22 14:09:49,176 WARN L855 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse2))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse0)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-07-22 14:09:55,696 WARN L833 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (let ((.cse3 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse3) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2022-07-22 14:09:57,861 WARN L855 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (let ((.cse3 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse3) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-07-22 14:09:57,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-07-22 14:09:57,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:09:57,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814055163] [2022-07-22 14:09:57,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814055163] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 14:09:57,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 14:09:57,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-07-22 14:09:57,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276368150] [2022-07-22 14:09:57,863 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 14:09:57,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 14:09:57,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:09:57,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 14:09:57,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=19, Unknown=10, NotChecked=78, Total=132 [2022-07-22 14:09:57,864 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:10:00,072 WARN L855 $PredicateComparison]: unable to prove that (and (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (let ((.cse3 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse3) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-22 14:10:02,307 WARN L855 $PredicateComparison]: unable to prove that (and (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse2))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse0)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-22 14:10:04,492 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (and (= |c_ULTIMATE.start_main_~x~0#1| (let ((.cse0 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) (not (fp.eq (let ((.cse2 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse2))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-07-22 14:10:06,627 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (and (= (let ((.cse0 (let ((.cse2 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32))))) |c_ULTIMATE.start_main_~x~0#1|) (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-07-22 14:10:08,855 WARN L855 $PredicateComparison]: unable to prove that (and (not (fp.eq |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (let ((.cse3 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse3) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-22 14:10:08,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:10:08,894 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-07-22 14:10:08,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 14:10:08,895 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-22 14:10:08,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:10:08,895 INFO L225 Difference]: With dead ends: 15 [2022-07-22 14:10:08,895 INFO L226 Difference]: Without dead ends: 11 [2022-07-22 14:10:08,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=35, Invalid=24, Unknown=15, NotChecked=198, Total=272 [2022-07-22 14:10:08,896 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 14:10:08,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2022-07-22 14:10:08,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-07-22 14:10:08,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-07-22 14:10:08,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:10:08,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-07-22 14:10:08,899 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2022-07-22 14:10:08,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:10:08,899 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-07-22 14:10:08,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:10:08,900 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-07-22 14:10:08,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-22 14:10:08,900 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:10:08,900 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-07-22 14:10:08,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-07-22 14:10:09,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:10:09,108 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:10:09,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:10:09,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1922847381, now seen corresponding path program 4 times [2022-07-22 14:10:09,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:10:09,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060286083] [2022-07-22 14:10:09,109 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 14:10:09,109 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:10:09,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:10:09,111 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 14:10:09,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-22 14:10:11,174 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 14:10:11,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 14:10:11,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 14:10:11,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:10:19,692 WARN L855 $PredicateComparison]: unable to prove that (and (= (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-22 14:10:26,588 WARN L855 $PredicateComparison]: unable to prove that (and (= (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (let ((.cse3 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse3) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-22 14:10:33,760 WARN L855 $PredicateComparison]: unable to prove that (and (= (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (let ((.cse4 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse4 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse4) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse3) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-22 14:10:33,783 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-07-22 14:10:33,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 14:10:40,132 WARN L833 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2022-07-22 14:10:42,213 WARN L855 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-07-22 14:10:48,720 WARN L833 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse0)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2022-07-22 14:10:50,880 WARN L855 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse0)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-07-22 14:10:57,630 WARN L833 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse2))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse0)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2022-07-22 14:10:59,874 WARN L855 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse2))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse0)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-07-22 14:11:06,795 WARN L833 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse3))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse2))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2022-07-22 14:11:09,106 WARN L855 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse3))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse2))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-07-22 14:11:15,932 WARN L833 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (let ((.cse4 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse4 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse4) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse3) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2022-07-22 14:11:18,199 WARN L855 $PredicateComparison]: unable to prove that (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (let ((.cse4 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse4 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse4) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse3) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-07-22 14:11:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-07-22 14:11:18,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:11:18,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060286083] [2022-07-22 14:11:18,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060286083] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 14:11:18,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 14:11:18,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-07-22 14:11:18,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194752513] [2022-07-22 14:11:18,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 14:11:18,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 14:11:18,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:11:18,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 14:11:18,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=20, Unknown=13, NotChecked=120, Total=182 [2022-07-22 14:11:18,201 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:11:20,543 WARN L855 $PredicateComparison]: unable to prove that (and (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (let ((.cse4 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse4 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse4) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse3) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-22 14:11:22,888 WARN L855 $PredicateComparison]: unable to prove that (and (not (fp.eq (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse3))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse2))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-22 14:11:25,156 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (and (= |c_ULTIMATE.start_main_~x~0#1| (let ((.cse0 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) (not (fp.eq (let ((.cse2 (let ((.cse3 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse3))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse2))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-07-22 14:11:27,396 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (and (= (let ((.cse0 (let ((.cse2 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32))))) |c_ULTIMATE.start_main_~x~0#1|) (not (fp.eq (let ((.cse3 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse3))))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-07-22 14:11:29,629 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (and (= (let ((.cse0 (let ((.cse2 (let ((.cse3 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse3) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32))))) |c_ULTIMATE.start_main_~x~0#1|) (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-07-22 14:11:31,869 WARN L855 $PredicateComparison]: unable to prove that (and (= (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (let ((.cse4 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse4 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse4) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse3) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) |c_ULTIMATE.start_main_~x~0#1|) (not (fp.eq |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-22 14:11:32,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:11:32,004 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-07-22 14:11:32,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 14:11:32,005 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-22 14:11:32,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:11:32,005 INFO L225 Difference]: With dead ends: 16 [2022-07-22 14:11:32,005 INFO L226 Difference]: Without dead ends: 12 [2022-07-22 14:11:32,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 44.1s TimeCoverageRelationStatistics Valid=41, Invalid=26, Unknown=19, NotChecked=294, Total=380 [2022-07-22 14:11:32,006 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 14:11:32,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 45 Unchecked, 0.2s Time] [2022-07-22 14:11:32,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-22 14:11:32,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-22 14:11:32,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:11:32,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-07-22 14:11:32,009 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2022-07-22 14:11:32,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:11:32,009 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-07-22 14:11:32,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:11:32,009 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-07-22 14:11:32,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-22 14:11:32,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:11:32,010 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2022-07-22 14:11:32,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-22 14:11:32,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:11:32,227 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:11:32,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:11:32,228 INFO L85 PathProgramCache]: Analyzing trace with hash 522938704, now seen corresponding path program 5 times [2022-07-22 14:11:32,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:11:32,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487829650] [2022-07-22 14:11:32,228 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 14:11:32,228 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:11:32,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:11:32,230 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 14:11:32,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-22 14:11:36,120 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-07-22 14:11:36,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 14:11:36,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 14:11:36,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:11:44,582 WARN L855 $PredicateComparison]: unable to prove that (and (= (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-22 14:11:51,407 WARN L855 $PredicateComparison]: unable to prove that (and (= (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (let ((.cse3 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse3) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-22 14:11:58,757 WARN L855 $PredicateComparison]: unable to prove that (and (= (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (let ((.cse4 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse4 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse4) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse3) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse0) (_ bv10 32)))))) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-22 14:12:04,003 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 14:12:06,423 WARN L855 $PredicateComparison]: unable to prove that (and (= (let ((.cse1 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (let ((.cse4 (let ((.cse5 ((_ to_fp 15 113) c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode 7.0))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse5 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse5) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse4 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse4) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse3 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse3) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero .cse2) (_ bv10 32))))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse0)))))) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-07-22 14:12:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 14 not checked. [2022-07-22 14:12:06,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 14:12:12,852 WARN L833 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from false [2022-07-22 14:12:14,945 WARN L855 $PredicateComparison]: unable to prove that (not (fp.eq (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32))) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))) ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-07-22 14:12:24,460 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (or (fp.eq |c_ULTIMATE.start_main_~x~0#1| .cse0) (not (fp.eq (let ((.cse2 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse2) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 .cse2) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse1)))))) .cse0)))) is different from false [2022-07-22 14:12:26,640 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 15 113) c_currentRoundingMode (_ bv0 32)))) (or (fp.eq |c_ULTIMATE.start_main_~x~0#1| .cse0) (not (fp.eq (let ((.cse2 ((_ to_fp 15 113) c_currentRoundingMode (_ bv10 32)))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse2) ((_ to_fp 15 113) c_currentRoundingMode (bvmul ((_ fp.to_sbv 32) roundTowardZero |c_ULTIMATE.start_main_~x~0#1|) (_ bv10 32)))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 .cse2) ((_ to_fp 15 113) c_currentRoundingMode (bvmul (_ bv10 32) ((_ fp.to_sbv 32) roundTowardZero .cse1)))))) .cse0)))) is different from true