./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/combinations/square_3+soft_float_4-2a.c.cil.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 4ba0922fbaee541ed4ded1889d0ea25cfcdd1e879f7757f1ef1aa76d5475dafa --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:40:11,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:40:11,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:40:11,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:40:11,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:40:11,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:40:11,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:40:11,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:40:11,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:40:11,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:40:11,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:40:11,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:40:11,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:40:11,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:40:11,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:40:11,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:40:11,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:40:11,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:40:11,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:40:11,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:40:11,977 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:40:11,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:40:11,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:40:11,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:40:11,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:40:11,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:40:11,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:40:11,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:40:11,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:40:11,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:40:11,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:40:11,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:40:11,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:40:11,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:40:11,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:40:11,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:40:11,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:40:11,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:40:11,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:40:11,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:40:11,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:40:11,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:40:11,999 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:40:12,025 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:40:12,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:40:12,027 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:40:12,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:40:12,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:40:12,028 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:40:12,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:40:12,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:40:12,029 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:40:12,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:40:12,030 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:40:12,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:40:12,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:40:12,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:40:12,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:40:12,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:40:12,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:40:12,031 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:40:12,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:40:12,031 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:40:12,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:40:12,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:40:12,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:40:12,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:40:12,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:40:12,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:40:12,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:40:12,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:40:12,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:40:12,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:40:12,033 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:40:12,033 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:40:12,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:40:12,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ba0922fbaee541ed4ded1889d0ea25cfcdd1e879f7757f1ef1aa76d5475dafa [2022-07-12 09:40:12,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:40:12,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:40:12,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:40:12,306 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:40:12,306 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:40:12,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c [2022-07-12 09:40:12,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2126828b2/37b313ac9a114f178d09c70ae234f0d5/FLAGd87b2e912 [2022-07-12 09:40:12,767 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:40:12,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c [2022-07-12 09:40:12,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2126828b2/37b313ac9a114f178d09c70ae234f0d5/FLAGd87b2e912 [2022-07-12 09:40:12,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2126828b2/37b313ac9a114f178d09c70ae234f0d5 [2022-07-12 09:40:12,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:40:12,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:40:12,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:40:12,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:40:12,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:40:12,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:40:12" (1/1) ... [2022-07-12 09:40:12,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ad4c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:12, skipping insertion in model container [2022-07-12 09:40:12,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:40:12" (1/1) ... [2022-07-12 09:40:12,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:40:12,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:40:13,042 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/combinations/square_3+soft_float_4-2a.c.cil.c[1999,2012] [2022-07-12 09:40:13,047 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/combinations/square_3+soft_float_4-2a.c.cil.c[2393,2406] [2022-07-12 09:40:13,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:40:13,127 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:40:13,146 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/combinations/square_3+soft_float_4-2a.c.cil.c[1999,2012] [2022-07-12 09:40:13,149 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/combinations/square_3+soft_float_4-2a.c.cil.c[2393,2406] [2022-07-12 09:40:13,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:40:13,208 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:40:13,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:13 WrapperNode [2022-07-12 09:40:13,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:40:13,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:40:13,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:40:13,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:40:13,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:13" (1/1) ... [2022-07-12 09:40:13,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:13" (1/1) ... [2022-07-12 09:40:13,251 INFO L137 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2022-07-12 09:40:13,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:40:13,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:40:13,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:40:13,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:40:13,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:13" (1/1) ... [2022-07-12 09:40:13,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:13" (1/1) ... [2022-07-12 09:40:13,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:13" (1/1) ... [2022-07-12 09:40:13,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:13" (1/1) ... [2022-07-12 09:40:13,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:13" (1/1) ... [2022-07-12 09:40:13,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:13" (1/1) ... [2022-07-12 09:40:13,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:13" (1/1) ... [2022-07-12 09:40:13,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:40:13,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:40:13,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:40:13,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:40:13,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:13" (1/1) ... [2022-07-12 09:40:13,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:40:13,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:40:13,307 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:40:13,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:40:13,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:40:13,341 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-12 09:40:13,341 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-12 09:40:13,341 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-07-12 09:40:13,341 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-07-12 09:40:13,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:40:13,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:40:13,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:40:13,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 09:40:13,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 09:40:13,429 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:40:13,435 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:40:13,751 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:40:13,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:40:13,758 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 09:40:13,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:40:13 BoogieIcfgContainer [2022-07-12 09:40:13,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:40:13,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:40:13,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:40:13,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:40:13,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:40:12" (1/3) ... [2022-07-12 09:40:13,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa5b007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:40:13, skipping insertion in model container [2022-07-12 09:40:13,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:13" (2/3) ... [2022-07-12 09:40:13,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa5b007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:40:13, skipping insertion in model container [2022-07-12 09:40:13,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:40:13" (3/3) ... [2022-07-12 09:40:13,767 INFO L111 eAbstractionObserver]: Analyzing ICFG square_3+soft_float_4-2a.c.cil.c [2022-07-12 09:40:13,779 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:40:13,780 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:40:13,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:40:13,831 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1cfa9318, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6ce6c67 [2022-07-12 09:40:13,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:40:13,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 83 states have (on average 1.6746987951807228) internal successors, (139), 85 states have internal predecessors, (139), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-12 09:40:13,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:40:13,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:40:13,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:40:13,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:40:13,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:40:13,849 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-07-12 09:40:13,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:40:13,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454851909] [2022-07-12 09:40:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:40:13,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:40:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:40:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:40:13,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:40:13,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454851909] [2022-07-12 09:40:13,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454851909] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:40:13,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:40:13,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:40:13,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891179299] [2022-07-12 09:40:13,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:40:13,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 09:40:13,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:40:14,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 09:40:14,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:40:14,025 INFO L87 Difference]: Start difference. First operand has 97 states, 83 states have (on average 1.6746987951807228) internal successors, (139), 85 states have internal predecessors, (139), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:40:14,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:40:14,079 INFO L93 Difference]: Finished difference Result 189 states and 310 transitions. [2022-07-12 09:40:14,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 09:40:14,081 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-12 09:40:14,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:40:14,090 INFO L225 Difference]: With dead ends: 189 [2022-07-12 09:40:14,090 INFO L226 Difference]: Without dead ends: 90 [2022-07-12 09:40:14,099 INFO L412 NwaCegarLoop]: 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 [2022-07-12 09:40:14,102 INFO L413 NwaCegarLoop]: 134 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, 134 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 [2022-07-12 09:40:14,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:40:14,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-12 09:40:14,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-07-12 09:40:14,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 77 states have (on average 1.4415584415584415) internal successors, (111), 79 states have internal predecessors, (111), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-12 09:40:14,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 126 transitions. [2022-07-12 09:40:14,137 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 126 transitions. Word has length 7 [2022-07-12 09:40:14,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:40:14,137 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 126 transitions. [2022-07-12 09:40:14,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:40:14,138 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 126 transitions. [2022-07-12 09:40:14,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:40:14,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:40:14,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:40:14,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:40:14,139 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:40:14,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:40:14,140 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-07-12 09:40:14,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:40:14,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253990764] [2022-07-12 09:40:14,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:40:14,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:40:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:40:14,156 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 09:40:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:40:14,179 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 09:40:14,179 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 09:40:14,180 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-12 09:40:14,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-12 09:40:14,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:40:14,185 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 09:40:14,188 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 09:40:14,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 09:40:14 BoogieIcfgContainer [2022-07-12 09:40:14,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 09:40:14,210 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 09:40:14,211 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 09:40:14,211 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 09:40:14,211 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:40:13" (3/4) ... [2022-07-12 09:40:14,214 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 09:40:14,214 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 09:40:14,216 INFO L158 Benchmark]: Toolchain (without parser) took 1416.80ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 57.0MB in the beginning and 78.8MB in the end (delta: -21.8MB). Peak memory consumption was 992.8kB. Max. memory is 16.1GB. [2022-07-12 09:40:14,216 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 94.4MB. Free memory was 73.8MB in the beginning and 73.7MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:40:14,219 INFO L158 Benchmark]: CACSL2BoogieTranslator took 408.41ms. Allocated memory is still 94.4MB. Free memory was 56.8MB in the beginning and 65.7MB in the end (delta: -8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 09:40:14,219 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.46ms. Allocated memory is still 94.4MB. Free memory was 65.7MB in the beginning and 63.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:40:14,219 INFO L158 Benchmark]: Boogie Preprocessor took 25.63ms. Allocated memory is still 94.4MB. Free memory was 63.6MB in the beginning and 62.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:40:14,220 INFO L158 Benchmark]: RCFGBuilder took 481.38ms. Allocated memory is still 94.4MB. Free memory was 61.9MB in the beginning and 43.8MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-12 09:40:14,220 INFO L158 Benchmark]: TraceAbstraction took 448.04ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 43.4MB in the beginning and 78.8MB in the end (delta: -35.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:40:14,220 INFO L158 Benchmark]: Witness Printer took 4.00ms. Allocated memory is still 117.4MB. Free memory is still 78.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:40:14,222 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 94.4MB. Free memory was 73.8MB in the beginning and 73.7MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 408.41ms. Allocated memory is still 94.4MB. Free memory was 56.8MB in the beginning and 65.7MB in the end (delta: -8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.46ms. Allocated memory is still 94.4MB. Free memory was 65.7MB in the beginning and 63.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.63ms. Allocated memory is still 94.4MB. Free memory was 63.6MB in the beginning and 62.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 481.38ms. Allocated memory is still 94.4MB. Free memory was 61.9MB in the beginning and 43.8MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 448.04ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 43.4MB in the beginning and 78.8MB in the end (delta: -35.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.00ms. Allocated memory is still 117.4MB. Free memory is still 78.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: 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 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.39843f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 97 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 134 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, 134 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=97occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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 [2022-07-12 09:40:14,251 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/combinations/square_3+soft_float_4-2a.c.cil.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 4ba0922fbaee541ed4ded1889d0ea25cfcdd1e879f7757f1ef1aa76d5475dafa --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:40:16,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:40:16,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:40:16,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:40:16,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:40:16,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:40:16,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:40:16,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:40:16,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:40:16,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:40:16,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:40:16,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:40:16,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:40:16,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:40:16,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:40:16,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:40:16,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:40:16,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:40:16,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:40:16,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:40:16,264 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:40:16,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:40:16,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:40:16,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:40:16,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:40:16,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:40:16,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:40:16,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:40:16,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:40:16,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:40:16,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:40:16,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:40:16,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:40:16,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:40:16,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:40:16,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:40:16,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:40:16,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:40:16,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:40:16,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:40:16,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:40:16,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:40:16,285 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 09:40:16,322 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:40:16,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:40:16,323 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:40:16,323 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:40:16,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:40:16,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:40:16,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:40:16,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:40:16,325 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:40:16,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:40:16,326 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:40:16,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:40:16,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:40:16,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:40:16,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:40:16,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:40:16,336 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 09:40:16,336 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 09:40:16,336 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 09:40:16,336 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:40:16,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:40:16,337 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:40:16,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:40:16,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:40:16,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:40:16,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:40:16,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:40:16,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:40:16,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:40:16,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:40:16,339 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 09:40:16,339 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 09:40:16,339 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:40:16,340 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:40:16,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:40:16,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 09:40:16,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ba0922fbaee541ed4ded1889d0ea25cfcdd1e879f7757f1ef1aa76d5475dafa [2022-07-12 09:40:16,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:40:16,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:40:16,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:40:16,672 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:40:16,672 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:40:16,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c [2022-07-12 09:40:16,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/221263716/77cc53f8623f4a88ad0768d60cb40f64/FLAG656c47348 [2022-07-12 09:40:17,214 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:40:17,215 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c [2022-07-12 09:40:17,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/221263716/77cc53f8623f4a88ad0768d60cb40f64/FLAG656c47348 [2022-07-12 09:40:17,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/221263716/77cc53f8623f4a88ad0768d60cb40f64 [2022-07-12 09:40:17,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:40:17,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:40:17,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:40:17,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:40:17,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:40:17,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:40:17" (1/1) ... [2022-07-12 09:40:17,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1abe9c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:17, skipping insertion in model container [2022-07-12 09:40:17,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:40:17" (1/1) ... [2022-07-12 09:40:17,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:40:17,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:40:17,921 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/combinations/square_3+soft_float_4-2a.c.cil.c[1999,2012] [2022-07-12 09:40:17,927 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/combinations/square_3+soft_float_4-2a.c.cil.c[2393,2406] [2022-07-12 09:40:17,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:40:17,996 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:40:18,007 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/combinations/square_3+soft_float_4-2a.c.cil.c[1999,2012] [2022-07-12 09:40:18,008 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/combinations/square_3+soft_float_4-2a.c.cil.c[2393,2406] [2022-07-12 09:40:18,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:40:18,039 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:40:18,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:18 WrapperNode [2022-07-12 09:40:18,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:40:18,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:40:18,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:40:18,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:40:18,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:18" (1/1) ... [2022-07-12 09:40:18,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:18" (1/1) ... [2022-07-12 09:40:18,074 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2022-07-12 09:40:18,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:40:18,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:40:18,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:40:18,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:40:18,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:18" (1/1) ... [2022-07-12 09:40:18,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:18" (1/1) ... [2022-07-12 09:40:18,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:18" (1/1) ... [2022-07-12 09:40:18,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:18" (1/1) ... [2022-07-12 09:40:18,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:18" (1/1) ... [2022-07-12 09:40:18,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:18" (1/1) ... [2022-07-12 09:40:18,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:18" (1/1) ... [2022-07-12 09:40:18,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:40:18,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:40:18,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:40:18,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:40:18,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:18" (1/1) ... [2022-07-12 09:40:18,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:40:18,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:40:18,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:40:18,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:40:18,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:40:18,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 09:40:18,215 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-12 09:40:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-12 09:40:18,216 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-07-12 09:40:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-07-12 09:40:18,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:40:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:40:18,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 09:40:18,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 09:40:18,277 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:40:18,278 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:40:20,780 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:40:20,787 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:40:20,788 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 09:40:20,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:40:20 BoogieIcfgContainer [2022-07-12 09:40:20,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:40:20,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:40:20,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:40:20,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:40:20,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:40:17" (1/3) ... [2022-07-12 09:40:20,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e112860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:40:20, skipping insertion in model container [2022-07-12 09:40:20,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:40:18" (2/3) ... [2022-07-12 09:40:20,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e112860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:40:20, skipping insertion in model container [2022-07-12 09:40:20,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:40:20" (3/3) ... [2022-07-12 09:40:20,807 INFO L111 eAbstractionObserver]: Analyzing ICFG square_3+soft_float_4-2a.c.cil.c [2022-07-12 09:40:20,820 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:40:20,820 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:40:20,861 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:40:20,867 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@312e11f4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3c47f5f3 [2022-07-12 09:40:20,867 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:40:20,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-12 09:40:20,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:40:20,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:40:20,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:40:20,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:40:20,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:40:20,883 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-07-12 09:40:20,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 09:40:20,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439078392] [2022-07-12 09:40:20,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:40:20,895 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 09:40:20,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 09:40:20,899 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 09:40:20,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 09:40:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:40:21,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 09:40:21,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:40:21,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:40:21,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:40:21,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 09:40:21,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439078392] [2022-07-12 09:40:21,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439078392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:40:21,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:40:21,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:40:21,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127445661] [2022-07-12 09:40:21,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:40:21,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 09:40:21,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 09:40:21,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 09:40:21,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:40:21,370 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:40:21,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:40:21,395 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2022-07-12 09:40:21,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 09:40:21,397 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-12 09:40:21,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:40:21,404 INFO L225 Difference]: With dead ends: 121 [2022-07-12 09:40:21,405 INFO L226 Difference]: Without dead ends: 56 [2022-07-12 09:40:21,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 09:40:21,411 INFO L413 NwaCegarLoop]: 81 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, 81 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 [2022-07-12 09:40:21,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:40:21,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-12 09:40:21,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-07-12 09:40:21,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-12 09:40:21,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2022-07-12 09:40:21,446 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2022-07-12 09:40:21,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:40:21,446 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2022-07-12 09:40:21,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:40:21,446 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2022-07-12 09:40:21,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:40:21,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:40:21,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:40:21,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 09:40:21,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 09:40:21,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:40:21,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:40:21,669 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-07-12 09:40:21,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 09:40:21,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966947447] [2022-07-12 09:40:21,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:40:21,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 09:40:21,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 09:40:21,672 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 09:40:21,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 09:41:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:41:25,402 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 09:43:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:43:47,076 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-12 09:43:47,076 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 09:43:47,077 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-12 09:43:47,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-12 09:43:47,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 09:43:47,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 09:43:47,283 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 09:43:47,288 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 09:43:47,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 09:43:47 BoogieIcfgContainer [2022-07-12 09:43:47,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 09:43:47,316 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 09:43:47,317 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 09:43:47,319 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 09:43:47,320 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:40:20" (3/4) ... [2022-07-12 09:43:47,322 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 09:43:47,354 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 09:43:47,354 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 09:43:47,355 INFO L158 Benchmark]: Toolchain (without parser) took 209608.60ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 36.6MB in the beginning and 39.5MB in the end (delta: -2.9MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2022-07-12 09:43:47,355 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 58.7MB. Free memory was 40.4MB in the beginning and 40.4MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:43:47,356 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.53ms. Allocated memory is still 58.7MB. Free memory was 36.4MB in the beginning and 37.5MB in the end (delta: -1.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 09:43:47,356 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.59ms. Allocated memory is still 58.7MB. Free memory was 37.4MB in the beginning and 35.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:43:47,356 INFO L158 Benchmark]: Boogie Preprocessor took 71.24ms. Allocated memory is still 58.7MB. Free memory was 35.6MB in the beginning and 34.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:43:47,357 INFO L158 Benchmark]: RCFGBuilder took 2642.84ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 33.9MB in the beginning and 47.7MB in the end (delta: -13.8MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2022-07-12 09:43:47,357 INFO L158 Benchmark]: TraceAbstraction took 206524.41ms. Allocated memory is still 71.3MB. Free memory was 47.2MB in the beginning and 41.3MB in the end (delta: 5.9MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2022-07-12 09:43:47,357 INFO L158 Benchmark]: Witness Printer took 37.80ms. Allocated memory is still 71.3MB. Free memory was 41.3MB in the beginning and 39.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:43:47,359 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 58.7MB. Free memory was 40.4MB in the beginning and 40.4MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.53ms. Allocated memory is still 58.7MB. Free memory was 36.4MB in the beginning and 37.5MB in the end (delta: -1.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.59ms. Allocated memory is still 58.7MB. Free memory was 37.4MB in the beginning and 35.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.24ms. Allocated memory is still 58.7MB. Free memory was 35.6MB in the beginning and 34.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2642.84ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 33.9MB in the beginning and 47.7MB in the end (delta: -13.8MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * TraceAbstraction took 206524.41ms. Allocated memory is still 71.3MB. Free memory was 47.2MB in the beginning and 41.3MB in the end (delta: 5.9MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * Witness Printer took 37.80ms. Allocated memory is still 71.3MB. Free memory was 41.3MB in the beginning and 39.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 48]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0.999987781047821, result=1.3984341621398926, x=0.999987781047821] [L47] COND TRUE !(result >= 0.0f && result < 1.39843f) VAL [IN=0.999987781047821, result=1.3984341621398926, x=0.999987781047821] [L48] reach_error() VAL [IN=0.999987781047821, result=1.3984341621398926, x=0.999987781047821] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 63 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 206.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 81 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, 81 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred 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, 64.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 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 proved your program to be incorrect! [2022-07-12 09:43:47,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE