./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0220b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_0220b.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 eba0d69032dcca3a4fd537674be713f074cf8e41be9cc562a35b9ffa9def96ba --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:42:23,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:42:23,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:42:23,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:42:23,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:42:23,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:42:23,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:42:23,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:42:23,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:42:23,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:42:23,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:42:23,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:42:23,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:42:23,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:42:23,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:42:23,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:42:23,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:42:23,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:42:23,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:42:23,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:42:23,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:42:23,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:42:23,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:42:23,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:42:23,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:42:23,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:42:23,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:42:23,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:42:23,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:42:23,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:42:23,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:42:23,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:42:23,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:42:23,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:42:23,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:42:23,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:42:23,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:42:23,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:42:23,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:42:23,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:42:23,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:42:23,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 23:42:23,707 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:42:23,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:42:23,709 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:42:23,709 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:42:23,710 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:42:23,710 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:42:23,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:42:23,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:42:23,711 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:42:23,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:42:23,711 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:42:23,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 23:42:23,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:42:23,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:42:23,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:42:23,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:42:23,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:42:23,712 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:42:23,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:42:23,713 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:42:23,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:42:23,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:42:23,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:42:23,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:42:23,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:42:23,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:42:23,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:42:23,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:42:23,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 23:42:23,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 23:42:23,715 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:42:23,715 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:42:23,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:42:23,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:42:23,716 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eba0d69032dcca3a4fd537674be713f074cf8e41be9cc562a35b9ffa9def96ba [2021-12-15 23:42:23,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:42:23,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:42:23,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:42:23,932 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:42:23,932 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:42:23,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0220b.c [2021-12-15 23:42:23,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eb53abd0/b123e11b1b264f76a53b5bc46406d363/FLAG58a2220b5 [2021-12-15 23:42:24,401 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:42:24,402 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0220b.c [2021-12-15 23:42:24,415 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eb53abd0/b123e11b1b264f76a53b5bc46406d363/FLAG58a2220b5 [2021-12-15 23:42:24,425 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eb53abd0/b123e11b1b264f76a53b5bc46406d363 [2021-12-15 23:42:24,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:42:24,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:42:24,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:42:24,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:42:24,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:42:24,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:42:24" (1/1) ... [2021-12-15 23:42:24,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ee660c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:24, skipping insertion in model container [2021-12-15 23:42:24,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:42:24" (1/1) ... [2021-12-15 23:42:24,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:42:24,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:42:24,735 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/float-newlib/float_req_bl_0220b.c[15845,15858] [2021-12-15 23:42:24,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:42:24,768 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:42:24,857 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/float-newlib/float_req_bl_0220b.c[15845,15858] [2021-12-15 23:42:24,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:42:24,890 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:42:24,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:24 WrapperNode [2021-12-15 23:42:24,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:42:24,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:42:24,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:42:24,892 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:42:24,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:24" (1/1) ... [2021-12-15 23:42:24,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:24" (1/1) ... [2021-12-15 23:42:24,998 INFO L137 Inliner]: procedures = 25, calls = 495, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 1156 [2021-12-15 23:42:24,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:42:24,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:42:24,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:42:24,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:42:25,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:24" (1/1) ... [2021-12-15 23:42:25,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:24" (1/1) ... [2021-12-15 23:42:25,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:24" (1/1) ... [2021-12-15 23:42:25,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:24" (1/1) ... [2021-12-15 23:42:25,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:24" (1/1) ... [2021-12-15 23:42:25,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:24" (1/1) ... [2021-12-15 23:42:25,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:24" (1/1) ... [2021-12-15 23:42:25,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:42:25,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:42:25,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:42:25,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:42:25,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:24" (1/1) ... [2021-12-15 23:42:25,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:42:25,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:42:25,102 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) [2021-12-15 23:42:25,151 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 [2021-12-15 23:42:25,160 INFO L130 BoogieDeclarations]: Found specification of procedure __kernel_cosf [2021-12-15 23:42:25,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __kernel_cosf [2021-12-15 23:42:25,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:42:25,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 23:42:25,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-15 23:42:25,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 23:42:25,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-15 23:42:25,161 INFO L130 BoogieDeclarations]: Found specification of procedure __kernel_sinf [2021-12-15 23:42:25,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __kernel_sinf [2021-12-15 23:42:25,162 INFO L130 BoogieDeclarations]: Found specification of procedure scalbn_float [2021-12-15 23:42:25,162 INFO L138 BoogieDeclarations]: Found implementation of procedure scalbn_float [2021-12-15 23:42:25,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 23:42:25,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-12-15 23:42:25,162 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2021-12-15 23:42:25,162 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2021-12-15 23:42:25,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 23:42:25,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:42:25,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:42:25,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 23:42:25,342 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:42:25,343 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:42:26,060 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:42:26,067 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:42:26,067 INFO L301 CfgBuilder]: Removed 61 assume(true) statements. [2021-12-15 23:42:26,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:42:26 BoogieIcfgContainer [2021-12-15 23:42:26,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:42:26,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:42:26,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:42:26,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:42:26,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:42:24" (1/3) ... [2021-12-15 23:42:26,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48895c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:42:26, skipping insertion in model container [2021-12-15 23:42:26,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:24" (2/3) ... [2021-12-15 23:42:26,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48895c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:42:26, skipping insertion in model container [2021-12-15 23:42:26,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:42:26" (3/3) ... [2021-12-15 23:42:26,077 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0220b.c [2021-12-15 23:42:26,082 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:42:26,082 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 23:42:26,119 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:42:26,126 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 23:42:26,127 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 23:42:26,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 249 states, 231 states have (on average 1.6623376623376624) internal successors, (384), 232 states have internal predecessors, (384), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-12-15 23:42:26,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-15 23:42:26,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:42:26,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:42:26,147 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:42:26,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:42:26,151 INFO L85 PathProgramCache]: Analyzing trace with hash -709361443, now seen corresponding path program 1 times [2021-12-15 23:42:26,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:42:26,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814645714] [2021-12-15 23:42:26,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:42:26,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:42:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:42:26,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:42:26,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:42:26,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814645714] [2021-12-15 23:42:26,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814645714] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:42:26,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:42:26,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 23:42:26,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969920920] [2021-12-15 23:42:26,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:42:26,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 23:42:26,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:42:26,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 23:42:26,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:42:26,372 INFO L87 Difference]: Start difference. First operand has 249 states, 231 states have (on average 1.6623376623376624) internal successors, (384), 232 states have internal predecessors, (384), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-12-15 23:42:26,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:42:26,404 INFO L93 Difference]: Finished difference Result 496 states and 826 transitions. [2021-12-15 23:42:26,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 23:42:26,405 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) Word has length 10 [2021-12-15 23:42:26,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:42:26,412 INFO L225 Difference]: With dead ends: 496 [2021-12-15 23:42:26,412 INFO L226 Difference]: Without dead ends: 246 [2021-12-15 23:42:26,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:42:26,418 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:42:26,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:42:26,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-12-15 23:42:26,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2021-12-15 23:42:26,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 229 states have (on average 1.3930131004366813) internal successors, (319), 229 states have internal predecessors, (319), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-12-15 23:42:26,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 343 transitions. [2021-12-15 23:42:26,452 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 343 transitions. Word has length 10 [2021-12-15 23:42:26,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:42:26,453 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 343 transitions. [2021-12-15 23:42:26,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-12-15 23:42:26,453 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 343 transitions. [2021-12-15 23:42:26,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 23:42:26,454 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:42:26,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:42:26,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 23:42:26,454 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:42:26,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:42:26,455 INFO L85 PathProgramCache]: Analyzing trace with hash 759322579, now seen corresponding path program 1 times [2021-12-15 23:42:26,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:42:26,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166739063] [2021-12-15 23:42:26,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:42:26,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:42:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 23:42:26,527 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 23:42:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 23:42:26,654 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 23:42:26,656 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 23:42:26,657 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 23:42:26,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 23:42:26,661 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-15 23:42:26,663 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 23:42:26,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:42:26 BoogieIcfgContainer [2021-12-15 23:42:26,710 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 23:42:26,711 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 23:42:26,711 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 23:42:26,711 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 23:42:26,711 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:42:26" (3/4) ... [2021-12-15 23:42:26,713 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-15 23:42:26,713 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 23:42:26,714 INFO L158 Benchmark]: Toolchain (without parser) took 2285.60ms. Allocated memory was 117.4MB in the beginning and 148.9MB in the end (delta: 31.5MB). Free memory was 87.2MB in the beginning and 64.2MB in the end (delta: 23.0MB). Peak memory consumption was 54.1MB. Max. memory is 16.1GB. [2021-12-15 23:42:26,714 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 86.0MB. Free memory was 45.7MB in the beginning and 45.7MB in the end (delta: 43.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:42:26,715 INFO L158 Benchmark]: CACSL2BoogieTranslator took 460.53ms. Allocated memory is still 117.4MB. Free memory was 86.9MB in the beginning and 77.3MB in the end (delta: 9.6MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2021-12-15 23:42:26,715 INFO L158 Benchmark]: Boogie Procedure Inliner took 107.36ms. Allocated memory is still 117.4MB. Free memory was 77.3MB in the beginning and 70.2MB in the end (delta: 7.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 23:42:26,716 INFO L158 Benchmark]: Boogie Preprocessor took 54.42ms. Allocated memory is still 117.4MB. Free memory was 70.2MB in the beginning and 63.3MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 23:42:26,716 INFO L158 Benchmark]: RCFGBuilder took 1015.31ms. Allocated memory is still 117.4MB. Free memory was 63.3MB in the beginning and 54.5MB in the end (delta: 8.8MB). Peak memory consumption was 45.2MB. Max. memory is 16.1GB. [2021-12-15 23:42:26,716 INFO L158 Benchmark]: TraceAbstraction took 639.05ms. Allocated memory was 117.4MB in the beginning and 148.9MB in the end (delta: 31.5MB). Free memory was 53.8MB in the beginning and 65.2MB in the end (delta: -11.4MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2021-12-15 23:42:26,717 INFO L158 Benchmark]: Witness Printer took 2.75ms. Allocated memory is still 148.9MB. Free memory was 65.2MB in the beginning and 64.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 23:42:26,718 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 86.0MB. Free memory was 45.7MB in the beginning and 45.7MB in the end (delta: 43.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 460.53ms. Allocated memory is still 117.4MB. Free memory was 86.9MB in the beginning and 77.3MB in the end (delta: 9.6MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 107.36ms. Allocated memory is still 117.4MB. Free memory was 77.3MB in the beginning and 70.2MB in the end (delta: 7.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.42ms. Allocated memory is still 117.4MB. Free memory was 70.2MB in the beginning and 63.3MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1015.31ms. Allocated memory is still 117.4MB. Free memory was 63.3MB in the beginning and 54.5MB in the end (delta: 8.8MB). Peak memory consumption was 45.2MB. Max. memory is 16.1GB. * TraceAbstraction took 639.05ms. Allocated memory was 117.4MB in the beginning and 148.9MB in the end (delta: 31.5MB). Free memory was 53.8MB in the beginning and 65.2MB in the end (delta: -11.4MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. * Witness Printer took 2.75ms. Allocated memory is still 148.9MB. Free memory was 65.2MB in the beginning and 64.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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: 629]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 628, overapproximation of someUnaryDOUBLEoperation at line 507, overapproximation of bitwiseAnd at line 594, overapproximation of someUnaryFLOAToperation at line 624, overapproximation of someBinaryArithmeticFLOAToperation at line 599. Possible FailurePath: [L13] static const float huge_floor = 1.0e30; [L90-L92] static const float two25_scalbn = 3.355443200e+07, twom25_scalbn = 2.9802322388e-08, huge_scalbn = 1.0e+30, tiny_scalbn = 1.0e-30; [L165] static const int init_jk_krempio[] = {4, 7, 9}; [L167-L171] static const float PIo2_krempio[] = { 1.5703125000e+00, 4.5776367188e-04, 2.5987625122e-05, 7.5437128544e-08, 6.0026650317e-11, 7.3896444519e-13, 5.3845816694e-15, 5.6378512969e-18, 8.3009228831e-20, 3.2756352257e-22, 6.3331015649e-25, }; [L173-L175] static const float zero_krempio = 0.0, one_krempio = 1.0, two8_krempio = 2.5600000000e+02, twon8_krempio = 3.9062500000e-03; [L350-L368] static const __int32_t two_over_pi_rempio[] = { 0xA2, 0xF9, 0x83, 0x6E, 0x4E, 0x44, 0x15, 0x29, 0xFC, 0x27, 0x57, 0xD1, 0xF5, 0x34, 0xDD, 0xC0, 0xDB, 0x62, 0x95, 0x99, 0x3C, 0x43, 0x90, 0x41, 0xFE, 0x51, 0x63, 0xAB, 0xDE, 0xBB, 0xC5, 0x61, 0xB7, 0x24, 0x6E, 0x3A, 0x42, 0x4D, 0xD2, 0xE0, 0x06, 0x49, 0x2E, 0xEA, 0x09, 0xD1, 0x92, 0x1C, 0xFE, 0x1D, 0xEB, 0x1C, 0xB1, 0x29, 0xA7, 0x3E, 0xE8, 0x82, 0x35, 0xF5, 0x2E, 0xBB, 0x44, 0x84, 0xE9, 0x9C, 0x70, 0x26, 0xB4, 0x5F, 0x7E, 0x41, 0x39, 0x91, 0xD6, 0x39, 0x83, 0x53, 0x39, 0xF4, 0x9C, 0x84, 0x5F, 0x8B, 0xBD, 0xF9, 0x28, 0x3B, 0x1F, 0xF8, 0x97, 0xFF, 0xDE, 0x05, 0x98, 0x0F, 0xEF, 0x2F, 0x11, 0x8B, 0x5A, 0x0A, 0x6D, 0x1F, 0x6D, 0x36, 0x7E, 0xCF, 0x27, 0xCB, 0x09, 0xB7, 0x4F, 0x46, 0x3F, 0x66, 0x9E, 0x5F, 0xEA, 0x2D, 0x75, 0x27, 0xBA, 0xC7, 0xEB, 0xE5, 0xF1, 0x7B, 0x3D, 0x07, 0x39, 0xF7, 0x8A, 0x52, 0x92, 0xEA, 0x6B, 0xFB, 0x5F, 0xB1, 0x1F, 0x8D, 0x5D, 0x08, 0x56, 0x03, 0x30, 0x46, 0xFC, 0x7B, 0x6B, 0xAB, 0xF0, 0xCF, 0xBC, 0x20, 0x9A, 0xF4, 0x36, 0x1D, 0xA9, 0xE3, 0x91, 0x61, 0x5E, 0xE6, 0x1B, 0x08, 0x65, 0x99, 0x85, 0x5F, 0x14, 0xA0, 0x68, 0x40, 0x8D, 0xFF, 0xD8, 0x80, 0x4D, 0x73, 0x27, 0x31, 0x06, 0x06, 0x15, 0x56, 0xCA, 0x73, 0xA8, 0xC9, 0x60, 0xE2, 0x7B, 0xC0, 0x8C, 0x6B, }; [L370-L376] static const __int32_t npio2_hw_rempio[] = { 0x3fc90f00, 0x40490f00, 0x4096cb00, 0x40c90f00, 0x40fb5300, 0x4116cb00, 0x412fed00, 0x41490f00, 0x41623100, 0x417b5300, 0x418a3a00, 0x4196cb00, 0x41a35c00, 0x41afed00, 0x41bc7e00, 0x41c90f00, 0x41d5a000, 0x41e23100, 0x41eec200, 0x41fb5300, 0x4203f200, 0x420a3a00, 0x42108300, 0x4216cb00, 0x421d1400, 0x42235c00, 0x4229a500, 0x422fed00, 0x42363600, 0x423c7e00, 0x4242c700, 0x42490f00}; [L378-L387] static const float zero_rempio = 0.0000000000e+00, half_rempio = 5.0000000000e-01, two8_rempio = 2.5600000000e+02, invpio2_rempio = 6.3661980629e-01, pio2_1_rempio = 1.5707855225e+00, pio2_1t_rempio = 1.0804334124e-05, pio2_2_rempio = 1.0804273188e-05, pio2_2t_rempio = 6.0770999344e-11, pio2_3_rempio = 6.0770943833e-11, pio2_3t_rempio = 6.1232342629e-17; [L507-L510] static const float half_ksin = 5.0000000000e-01, S1_ksin = -1.6666667163e-01, S2_ksin = 8.3333337680e-03, S3_ksin = -1.9841270114e-04, S4_ksin = 2.7557314297e-06, S5_ksin = -2.5050759689e-08, S6_ksin = 1.5896910177e-10; [L534-L537] static const float one_kcos = 1.0000000000e+00, C1_kcos = 4.1666667908e-02, C2_kcos = -1.3888889225e-03, C3_kcos = 2.4801587642e-05, C4_kcos = -2.7557314297e-07, C5_kcos = 2.0875723372e-09, C6_kcos = -1.1359647598e-11; [L574-L582] static const float one_ktan = 1.0000000000e+00, pio4_ktan = 7.8539812565e-01, pio4lo_ktan = 3.7748947079e-08, T_ktan[] = { 3.3333334327e-01, 1.3333334029e-01, 5.3968254477e-02, 2.1869488060e-02, 8.8632395491e-03, 3.5920790397e-03, 1.4562094584e-03, 5.8804126456e-04, 2.4646313977e-04, 7.8179444245e-05, 7.1407252108e-05, -1.8558637748e-05, 2.5907305826e-05, }; VAL [C1_kcos=10416666977/250000000000, C3_kcos=12400793821/500000000000000, C5_kcos=5218930843/2500000000000000000, half_ksin=1/2, half_rempio=1/2, huge_floor=1000000000000000000000000000000, huge_scalbn=1000000000000000000000000000000, init_jk_krempio={4:0}, invpio2_rempio=63661980629/100000000000, npio2_hw_rempio={7:0}, one_kcos=1, one_krempio=1, one_ktan=1, pio2_1_rempio=628314209/400000000, pio2_1t_rempio=2701083531/250000000000000, pio2_2_rempio=2701068297/250000000000000, pio2_2t_rempio=3798187459/62500000000000000000, pio2_3_rempio=60770943833/1000000000000000000000, pio2_3t_rempio=61232342629/1000000000000000000000000000, PIo2_krempio={5:0}, pio4_ktan=15707962513/20000000000, pio4lo_ktan=37748947079/1000000000000000000, S2_ksin=1041666721/125000000000, S4_ksin=27557314297/10000000000000000, S6_ksin=15896910177/100000000000000000000, tiny_scalbn=1/1000000000000000000000000000000, two25_scalbn=33554432, two8_krempio=256, two8_rempio=256, two_over_pi_rempio={6:0}, twom25_scalbn=7450580597/250000000000000000, twon8_krempio=1/256, zero_krempio=0, zero_rempio=0] [L624] float x = -0.0f; [L625] CALL, EXPR sin_float(x) [L585] float y[2], z = 0.0; [L586] __int32_t n, ix; VAL [\old(x)=1000000000000000000000000000002, C1_kcos=10416666977/250000000000, C3_kcos=12400793821/500000000000000, C5_kcos=5218930843/2500000000000000000, half_ksin=1/2, half_rempio=1/2, huge_floor=1000000000000000000000000000000, huge_scalbn=1000000000000000000000000000000, init_jk_krempio={4:0}, invpio2_rempio=63661980629/100000000000, npio2_hw_rempio={7:0}, one_kcos=1, one_krempio=1, one_ktan=1, pio2_1_rempio=628314209/400000000, pio2_1t_rempio=2701083531/250000000000000, pio2_2_rempio=2701068297/250000000000000, pio2_2t_rempio=3798187459/62500000000000000000, pio2_3_rempio=60770943833/1000000000000000000000, pio2_3t_rempio=61232342629/1000000000000000000000000000, PIo2_krempio={5:0}, pio4_ktan=15707962513/20000000000, pio4lo_ktan=37748947079/1000000000000000000, S2_ksin=1041666721/125000000000, S4_ksin=27557314297/10000000000000000, S6_ksin=15896910177/100000000000000000000, tiny_scalbn=1/1000000000000000000000000000000, two25_scalbn=33554432, two8_krempio=256, two8_rempio=256, two_over_pi_rempio={6:0}, twom25_scalbn=7450580597/250000000000000000, twon8_krempio=1/256, x=1000000000000000000000000000002, y={14:0}, z=0, zero_krempio=0, zero_rempio=0] [L589] ieee_float_shape_type gf_u; [L590] gf_u.value = (x) [L591] EXPR gf_u.word [L591] (ix) = gf_u.word [L594] ix &= 0x7fffffff VAL [\old(x)=1000000000000000000000000000002, C1_kcos=10416666977/250000000000, C3_kcos=12400793821/500000000000000, C5_kcos=5218930843/2500000000000000000, half_ksin=1/2, half_rempio=1/2, huge_floor=1000000000000000000000000000000, huge_scalbn=1000000000000000000000000000000, init_jk_krempio={4:0}, invpio2_rempio=63661980629/100000000000, npio2_hw_rempio={7:0}, one_kcos=1, one_krempio=1, one_ktan=1, pio2_1_rempio=628314209/400000000, pio2_1t_rempio=2701083531/250000000000000, pio2_2_rempio=2701068297/250000000000000, pio2_2t_rempio=3798187459/62500000000000000000, pio2_3_rempio=60770943833/1000000000000000000000, pio2_3t_rempio=61232342629/1000000000000000000000000000, PIo2_krempio={5:0}, pio4_ktan=15707962513/20000000000, pio4lo_ktan=37748947079/1000000000000000000, S2_ksin=1041666721/125000000000, S4_ksin=27557314297/10000000000000000, S6_ksin=15896910177/100000000000000000000, tiny_scalbn=1/1000000000000000000000000000000, two25_scalbn=33554432, two8_krempio=256, two8_rempio=256, two_over_pi_rempio={6:0}, twom25_scalbn=7450580597/250000000000000000, twon8_krempio=1/256, x=1000000000000000000000000000002, y={14:0}, z=0, zero_krempio=0, zero_rempio=0] [L595] COND FALSE !(ix <= 0x3f490fd8) VAL [\old(x)=1000000000000000000000000000002, C1_kcos=10416666977/250000000000, C3_kcos=12400793821/500000000000000, C5_kcos=5218930843/2500000000000000000, half_ksin=1/2, half_rempio=1/2, huge_floor=1000000000000000000000000000000, huge_scalbn=1000000000000000000000000000000, init_jk_krempio={4:0}, invpio2_rempio=63661980629/100000000000, ix=2139095040, npio2_hw_rempio={7:0}, one_kcos=1, one_krempio=1, one_ktan=1, pio2_1_rempio=628314209/400000000, pio2_1t_rempio=2701083531/250000000000000, pio2_2_rempio=2701068297/250000000000000, pio2_2t_rempio=3798187459/62500000000000000000, pio2_3_rempio=60770943833/1000000000000000000000, pio2_3t_rempio=61232342629/1000000000000000000000000000, PIo2_krempio={5:0}, pio4_ktan=15707962513/20000000000, pio4lo_ktan=37748947079/1000000000000000000, S2_ksin=1041666721/125000000000, S4_ksin=27557314297/10000000000000000, S6_ksin=15896910177/100000000000000000000, tiny_scalbn=1/1000000000000000000000000000000, two25_scalbn=33554432, two8_krempio=256, two8_rempio=256, two_over_pi_rempio={6:0}, twom25_scalbn=7450580597/250000000000000000, twon8_krempio=1/256, x=1000000000000000000000000000002, y={14:0}, z=0, zero_krempio=0, zero_rempio=0] [L598] COND TRUE !((ix) < 0x7f800000L) [L599] return x - x; [L599] return x - x; VAL [\old(x)=1000000000000000000000000000002, C1_kcos=10416666977/250000000000, C3_kcos=12400793821/500000000000000, C5_kcos=5218930843/2500000000000000000, half_ksin=1/2, half_rempio=1/2, huge_floor=1000000000000000000000000000000, huge_scalbn=1000000000000000000000000000000, init_jk_krempio={4:0}, invpio2_rempio=63661980629/100000000000, ix=2139095040, npio2_hw_rempio={7:0}, one_kcos=1, one_krempio=1, one_ktan=1, pio2_1_rempio=628314209/400000000, pio2_1t_rempio=2701083531/250000000000000, pio2_2_rempio=2701068297/250000000000000, pio2_2t_rempio=3798187459/62500000000000000000, pio2_3_rempio=60770943833/1000000000000000000000, pio2_3t_rempio=61232342629/1000000000000000000000000000, PIo2_krempio={5:0}, pio4_ktan=15707962513/20000000000, pio4lo_ktan=37748947079/1000000000000000000, S2_ksin=1041666721/125000000000, S4_ksin=27557314297/10000000000000000, S6_ksin=15896910177/100000000000000000000, tiny_scalbn=1/1000000000000000000000000000000, two25_scalbn=33554432, two8_krempio=256, two8_rempio=256, two_over_pi_rempio={6:0}, twom25_scalbn=7450580597/250000000000000000, twon8_krempio=1/256, x=1000000000000000000000000000002, z=0, zero_krempio=0, zero_rempio=0] [L625] RET, EXPR sin_float(x) [L625] float res = sin_float(x); [L628] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [C1_kcos=10416666977/250000000000, C3_kcos=12400793821/500000000000000, C5_kcos=5218930843/2500000000000000000, half_ksin=1/2, half_rempio=1/2, huge_floor=1000000000000000000000000000000, huge_scalbn=1000000000000000000000000000000, init_jk_krempio={4:0}, invpio2_rempio=63661980629/100000000000, npio2_hw_rempio={7:0}, one_kcos=1, one_krempio=1, one_ktan=1, pio2_1_rempio=628314209/400000000, pio2_1t_rempio=2701083531/250000000000000, pio2_2_rempio=2701068297/250000000000000, pio2_2t_rempio=3798187459/62500000000000000000, pio2_3_rempio=60770943833/1000000000000000000000, pio2_3t_rempio=61232342629/1000000000000000000000000000, PIo2_krempio={5:0}, pio4_ktan=15707962513/20000000000, pio4lo_ktan=37748947079/1000000000000000000, res=1000000000000000000000000000001, res == -0.0f && __signbit_float(res) == 1=0, S2_ksin=1041666721/125000000000, S4_ksin=27557314297/10000000000000000, S6_ksin=15896910177/100000000000000000000, tiny_scalbn=1/1000000000000000000000000000000, two25_scalbn=33554432, two8_krempio=256, two8_rempio=256, two_over_pi_rempio={6:0}, twom25_scalbn=7450580597/250000000000000000, twon8_krempio=1/256, x=1000000000000000000000000000002, zero_krempio=0, zero_rempio=0] [L628] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L629] reach_error() VAL [C1_kcos=10416666977/250000000000, C3_kcos=12400793821/500000000000000, C5_kcos=5218930843/2500000000000000000, half_ksin=1/2, half_rempio=1/2, huge_floor=1000000000000000000000000000000, huge_scalbn=1000000000000000000000000000000, init_jk_krempio={4:0}, invpio2_rempio=63661980629/100000000000, npio2_hw_rempio={7:0}, one_kcos=1, one_krempio=1, one_ktan=1, pio2_1_rempio=628314209/400000000, pio2_1t_rempio=2701083531/250000000000000, pio2_2_rempio=2701068297/250000000000000, pio2_2t_rempio=3798187459/62500000000000000000, pio2_3_rempio=60770943833/1000000000000000000000, pio2_3t_rempio=61232342629/1000000000000000000000000000, PIo2_krempio={5:0}, pio4_ktan=15707962513/20000000000, pio4lo_ktan=37748947079/1000000000000000000, res=1000000000000000000000000000001, S2_ksin=1041666721/125000000000, S4_ksin=27557314297/10000000000000000, S6_ksin=15896910177/100000000000000000000, tiny_scalbn=1/1000000000000000000000000000000, two25_scalbn=33554432, two8_krempio=256, two8_rempio=256, two_over_pi_rempio={6:0}, twom25_scalbn=7450580597/250000000000000000, twon8_krempio=1/256, x=1000000000000000000000000000002, zero_krempio=0, zero_rempio=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 249 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 346 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 346 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-15 23:42:26,761 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/float-newlib/float_req_bl_0220b.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 eba0d69032dcca3a4fd537674be713f074cf8e41be9cc562a35b9ffa9def96ba --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:42:28,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:42:28,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:42:28,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:42:28,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:42:28,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:42:28,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:42:28,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:42:28,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:42:28,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:42:28,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:42:28,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:42:28,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:42:28,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:42:28,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:42:28,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:42:28,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:42:28,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:42:28,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:42:28,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:42:28,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:42:28,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:42:28,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:42:28,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:42:28,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:42:28,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:42:28,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:42:28,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:42:28,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:42:28,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:42:28,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:42:28,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:42:28,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:42:28,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:42:28,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:42:28,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:42:28,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:42:28,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:42:28,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:42:28,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:42:28,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:42:28,853 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 23:42:28,891 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:42:28,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:42:28,892 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:42:28,893 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:42:28,893 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:42:28,894 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:42:28,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:42:28,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:42:28,895 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:42:28,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:42:28,896 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:42:28,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:42:28,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:42:28,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:42:28,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:42:28,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:42:28,896 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 23:42:28,897 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 23:42:28,897 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 23:42:28,897 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:42:28,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:42:28,897 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:42:28,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:42:28,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:42:28,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:42:28,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:42:28,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:42:28,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:42:28,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:42:28,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:42:28,899 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 23:42:28,899 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 23:42:28,899 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:42:28,899 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:42:28,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:42:28,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:42:28,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 23:42:28,900 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eba0d69032dcca3a4fd537674be713f074cf8e41be9cc562a35b9ffa9def96ba [2021-12-15 23:42:29,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:42:29,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:42:29,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:42:29,195 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:42:29,196 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:42:29,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0220b.c [2021-12-15 23:42:29,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f4235033/44d2429222944cbaab7ed39cd6c5a6ec/FLAGe0cdd09ea [2021-12-15 23:42:29,656 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:42:29,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0220b.c [2021-12-15 23:42:29,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f4235033/44d2429222944cbaab7ed39cd6c5a6ec/FLAGe0cdd09ea [2021-12-15 23:42:29,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f4235033/44d2429222944cbaab7ed39cd6c5a6ec [2021-12-15 23:42:29,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:42:29,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:42:29,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:42:29,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:42:29,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:42:29,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:42:29" (1/1) ... [2021-12-15 23:42:29,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6289dac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:29, skipping insertion in model container [2021-12-15 23:42:29,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:42:29" (1/1) ... [2021-12-15 23:42:29,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:42:29,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:42:30,016 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/float-newlib/float_req_bl_0220b.c[15845,15858] [2021-12-15 23:42:30,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:42:30,053 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:42:30,140 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/float-newlib/float_req_bl_0220b.c[15845,15858] [2021-12-15 23:42:30,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:42:30,198 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:42:30,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:30 WrapperNode [2021-12-15 23:42:30,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:42:30,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:42:30,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:42:30,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:42:30,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:30" (1/1) ... [2021-12-15 23:42:30,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:30" (1/1) ... [2021-12-15 23:42:30,283 INFO L137 Inliner]: procedures = 29, calls = 495, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 1154 [2021-12-15 23:42:30,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:42:30,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:42:30,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:42:30,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:42:30,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:30" (1/1) ... [2021-12-15 23:42:30,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:30" (1/1) ... [2021-12-15 23:42:30,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:30" (1/1) ... [2021-12-15 23:42:30,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:30" (1/1) ... [2021-12-15 23:42:30,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:30" (1/1) ... [2021-12-15 23:42:30,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:30" (1/1) ... [2021-12-15 23:42:30,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:30" (1/1) ... [2021-12-15 23:42:30,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:42:30,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:42:30,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:42:30,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:42:30,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:30" (1/1) ... [2021-12-15 23:42:30,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:42:30,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:42:30,457 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) [2021-12-15 23:42:30,467 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 [2021-12-15 23:42:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure __kernel_cosf [2021-12-15 23:42:30,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __kernel_cosf [2021-12-15 23:42:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:42:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 23:42:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-15 23:42:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 23:42:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-12-15 23:42:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 23:42:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure __kernel_sinf [2021-12-15 23:42:30,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __kernel_sinf [2021-12-15 23:42:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure scalbn_float [2021-12-15 23:42:30,525 INFO L138 BoogieDeclarations]: Found implementation of procedure scalbn_float [2021-12-15 23:42:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-12-15 23:42:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2021-12-15 23:42:30,525 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2021-12-15 23:42:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-12-15 23:42:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:42:30,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:42:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 23:42:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 23:42:30,715 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:42:30,722 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:43:12,765 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:43:12,771 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:43:12,771 INFO L301 CfgBuilder]: Removed 61 assume(true) statements. [2021-12-15 23:43:12,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:43:12 BoogieIcfgContainer [2021-12-15 23:43:12,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:43:12,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:43:12,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:43:12,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:43:12,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:42:29" (1/3) ... [2021-12-15 23:43:12,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e12d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:43:12, skipping insertion in model container [2021-12-15 23:43:12,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:42:30" (2/3) ... [2021-12-15 23:43:12,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e12d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:43:12, skipping insertion in model container [2021-12-15 23:43:12,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:43:12" (3/3) ... [2021-12-15 23:43:12,798 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0220b.c [2021-12-15 23:43:12,802 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:43:12,804 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 23:43:12,836 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:43:12,840 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 23:43:12,841 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 23:43:12,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 249 states, 231 states have (on average 1.6623376623376624) internal successors, (384), 232 states have internal predecessors, (384), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-12-15 23:43:12,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-15 23:43:12,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:43:12,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:43:12,864 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:43:12,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:43:12,867 INFO L85 PathProgramCache]: Analyzing trace with hash -709361443, now seen corresponding path program 1 times [2021-12-15 23:43:12,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:43:12,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798011800] [2021-12-15 23:43:12,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:43:12,877 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:43:12,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:43:12,879 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) [2021-12-15 23:43:12,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 23:43:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:43:14,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 23:43:14,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:43:14,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:43:14,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:43:14,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:43:14,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798011800] [2021-12-15 23:43:14,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798011800] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:43:14,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:43:14,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 23:43:14,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956408004] [2021-12-15 23:43:14,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:43:14,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 23:43:14,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:43:14,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 23:43:14,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:43:14,476 INFO L87 Difference]: Start difference. First operand has 249 states, 231 states have (on average 1.6623376623376624) internal successors, (384), 232 states have internal predecessors, (384), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-12-15 23:43:14,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:43:14,570 INFO L93 Difference]: Finished difference Result 496 states and 826 transitions. [2021-12-15 23:43:14,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 23:43:14,572 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) Word has length 10 [2021-12-15 23:43:14,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:43:14,579 INFO L225 Difference]: With dead ends: 496 [2021-12-15 23:43:14,579 INFO L226 Difference]: Without dead ends: 246 [2021-12-15 23:43:14,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:43:14,585 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:43:14,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:43:14,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-12-15 23:43:14,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2021-12-15 23:43:14,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 229 states have (on average 1.3930131004366813) internal successors, (319), 229 states have internal predecessors, (319), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-12-15 23:43:14,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 343 transitions. [2021-12-15 23:43:14,627 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 343 transitions. Word has length 10 [2021-12-15 23:43:14,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:43:14,628 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 343 transitions. [2021-12-15 23:43:14,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-12-15 23:43:14,628 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 343 transitions. [2021-12-15 23:43:14,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 23:43:14,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:43:14,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:43:14,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 23:43:14,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:43:14,830 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:43:14,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:43:14,830 INFO L85 PathProgramCache]: Analyzing trace with hash 759322579, now seen corresponding path program 1 times [2021-12-15 23:43:14,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:43:14,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882435003] [2021-12-15 23:43:14,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:43:14,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:43:14,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:43:14,833 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) [2021-12-15 23:43:14,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 23:43:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:43:16,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-15 23:43:16,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:43:16,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:43:16,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:43:16,553 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:43:16,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882435003] [2021-12-15 23:43:16,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882435003] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:43:16,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:43:16,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 23:43:16,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961293352] [2021-12-15 23:43:16,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:43:16,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 23:43:16,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:43:16,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 23:43:16,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 23:43:16,557 INFO L87 Difference]: Start difference. First operand 246 states and 343 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2021-12-15 23:43:16,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:43:16,692 INFO L93 Difference]: Finished difference Result 265 states and 364 transitions. [2021-12-15 23:43:16,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 23:43:16,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 11 [2021-12-15 23:43:16,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:43:16,693 INFO L225 Difference]: With dead ends: 265 [2021-12-15 23:43:16,693 INFO L226 Difference]: Without dead ends: 27 [2021-12-15 23:43:16,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-15 23:43:16,697 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:43:16,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 103 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 3 Unchecked, 0.0s Time] [2021-12-15 23:43:16,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-15 23:43:16,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-15 23:43:16,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-15 23:43:16,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-12-15 23:43:16,705 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 11 [2021-12-15 23:43:16,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:43:16,705 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-12-15 23:43:16,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2021-12-15 23:43:16,706 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-12-15 23:43:16,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-15 23:43:16,706 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:43:16,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:43:16,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-15 23:43:16,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:43:16,931 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:43:16,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:43:16,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1983106081, now seen corresponding path program 1 times [2021-12-15 23:43:16,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:43:16,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113166000] [2021-12-15 23:43:16,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:43:16,933 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:43:16,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:43:16,940 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) [2021-12-15 23:43:16,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-15 23:43:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:43:18,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-15 23:43:18,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:43:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:43:18,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:43:18,849 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:43:18,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113166000] [2021-12-15 23:43:18,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113166000] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:43:18,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:43:18,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 23:43:18,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715740760] [2021-12-15 23:43:18,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:43:18,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-15 23:43:18,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:43:18,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-15 23:43:18,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-15 23:43:18,850 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-15 23:43:21,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:43:23,477 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:43:25,482 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:43:27,634 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:43:29,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:43:30,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:43:30,071 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-12-15 23:43:30,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 23:43:30,071 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-12-15 23:43:30,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:43:30,072 INFO L225 Difference]: With dead ends: 42 [2021-12-15 23:43:30,072 INFO L226 Difference]: Without dead ends: 39 [2021-12-15 23:43:30,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-12-15 23:43:30,073 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 35 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-12-15 23:43:30,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 126 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 10.9s Time] [2021-12-15 23:43:30,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-15 23:43:30,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2021-12-15 23:43:30,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-15 23:43:30,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-12-15 23:43:30,077 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 20 [2021-12-15 23:43:30,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:43:30,077 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-12-15 23:43:30,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-15 23:43:30,078 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-12-15 23:43:30,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-15 23:43:30,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:43:30,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:43:30,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-15 23:43:30,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:43:30,279 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:43:30,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:43:30,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1085069118, now seen corresponding path program 1 times [2021-12-15 23:43:30,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:43:30,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083222049] [2021-12-15 23:43:30,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:43:30,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:43:30,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:43:30,283 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) [2021-12-15 23:43:30,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-15 23:43:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:43:32,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-15 23:43:32,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:43:32,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:43:32,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:43:32,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:43:32,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083222049] [2021-12-15 23:43:32,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083222049] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:43:32,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:43:32,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 23:43:32,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538156619] [2021-12-15 23:43:32,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:43:32,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 23:43:32,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:43:32,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 23:43:32,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-15 23:43:32,883 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-15 23:43:33,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:43:33,471 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2021-12-15 23:43:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 23:43:33,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-12-15 23:43:33,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:43:33,474 INFO L225 Difference]: With dead ends: 46 [2021-12-15 23:43:33,474 INFO L226 Difference]: Without dead ends: 32 [2021-12-15 23:43:33,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-15 23:43:33,475 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 23:43:33,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 125 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 14 Unchecked, 0.1s Time] [2021-12-15 23:43:33,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-15 23:43:33,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-15 23:43:33,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-15 23:43:33,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2021-12-15 23:43:33,480 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 21 [2021-12-15 23:43:33,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:43:33,480 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2021-12-15 23:43:33,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-15 23:43:33,481 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2021-12-15 23:43:33,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-15 23:43:33,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:43:33,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:43:33,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-15 23:43:33,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:43:33,695 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:43:33,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:43:33,696 INFO L85 PathProgramCache]: Analyzing trace with hash 452402173, now seen corresponding path program 1 times [2021-12-15 23:43:33,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:43:33,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405637751] [2021-12-15 23:43:33,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:43:33,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:43:33,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:43:33,698 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) [2021-12-15 23:43:33,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-15 23:43:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:43:35,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-15 23:43:35,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:43:36,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:43:36,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:43:36,146 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:43:36,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405637751] [2021-12-15 23:43:36,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405637751] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:43:36,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:43:36,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 23:43:36,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958894107] [2021-12-15 23:43:36,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:43:36,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 23:43:36,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:43:36,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 23:43:36,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 23:43:36,148 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-15 23:43:38,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:43:40,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []