./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_2+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 af68db482217344707737f8e87f1bf38c34023f3266d60519ba723388f89d51c --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:13:58,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:13:58,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:13:58,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:13:58,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:13:58,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:13:58,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:13:58,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:13:58,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:13:58,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:13:58,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:13:58,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:13:58,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:13:58,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:13:58,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:13:58,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:13:58,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:13:58,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:13:58,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:13:58,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:13:58,941 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:13:58,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:13:58,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:13:58,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:13:58,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:13:58,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:13:58,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:13:58,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:13:58,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:13:58,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:13:58,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:13:58,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:13:58,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:13:58,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:13:58,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:13:58,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:13:58,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:13:58,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:13:58,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:13:58,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:13:58,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:13:58,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:13:58,972 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:13:58,994 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:13:58,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:13:58,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:13:58,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:13:58,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:13:58,996 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:13:58,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:13:58,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:13:58,997 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:13:58,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:13:58,997 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:13:58,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:13:58,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:13:58,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:13:58,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:13:58,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:13:58,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:13:58,998 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:13:58,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:13:58,999 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:13:58,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:13:58,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:13:58,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:13:59,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:13:59,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:13:59,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:13:59,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:13:59,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:13:59,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:13:59,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:13:59,001 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:13:59,001 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:13:59,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:13:59,002 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af68db482217344707737f8e87f1bf38c34023f3266d60519ba723388f89d51c [2022-07-21 08:13:59,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:13:59,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:13:59,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:13:59,320 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:13:59,321 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:13:59,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c [2022-07-21 08:13:59,376 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d76cc399/3b5f320c4d514aad96f86fa7b14e9ac2/FLAG947f09b7a [2022-07-21 08:13:59,820 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:13:59,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c [2022-07-21 08:13:59,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d76cc399/3b5f320c4d514aad96f86fa7b14e9ac2/FLAG947f09b7a [2022-07-21 08:13:59,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d76cc399/3b5f320c4d514aad96f86fa7b14e9ac2 [2022-07-21 08:13:59,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:13:59,852 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:13:59,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:13:59,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:13:59,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:13:59,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:13:59" (1/1) ... [2022-07-21 08:13:59,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ad14a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:13:59, skipping insertion in model container [2022-07-21 08:13:59,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:13:59" (1/1) ... [2022-07-21 08:13:59,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:13:59,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:14:00,075 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_2+soft_float_4-2a.c.cil.c[1997,2010] [2022-07-21 08:14:00,099 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_2+soft_float_4-2a.c.cil.c[2391,2404] [2022-07-21 08:14:00,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:14:00,177 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:14:00,197 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_2+soft_float_4-2a.c.cil.c[1997,2010] [2022-07-21 08:14:00,200 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_2+soft_float_4-2a.c.cil.c[2391,2404] [2022-07-21 08:14:00,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:14:00,258 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:14:00,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:00 WrapperNode [2022-07-21 08:14:00,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:14:00,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:14:00,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:14:00,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:14:00,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:00" (1/1) ... [2022-07-21 08:14:00,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:00" (1/1) ... [2022-07-21 08:14:00,308 INFO L137 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2022-07-21 08:14:00,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:14:00,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:14:00,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:14:00,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:14:00,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:00" (1/1) ... [2022-07-21 08:14:00,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:00" (1/1) ... [2022-07-21 08:14:00,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:00" (1/1) ... [2022-07-21 08:14:00,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:00" (1/1) ... [2022-07-21 08:14:00,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:00" (1/1) ... [2022-07-21 08:14:00,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:00" (1/1) ... [2022-07-21 08:14:00,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:00" (1/1) ... [2022-07-21 08:14:00,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:14:00,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:14:00,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:14:00,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:14:00,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:00" (1/1) ... [2022-07-21 08:14:00,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:14:00,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:14:00,400 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) [2022-07-21 08:14:00,423 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 [2022-07-21 08:14:00,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:14:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-21 08:14:00,452 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-21 08:14:00,452 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-07-21 08:14:00,453 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-07-21 08:14:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:14:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:14:00,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:14:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 08:14:00,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 08:14:00,587 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:14:00,589 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:14:00,942 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:14:00,948 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:14:00,948 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 08:14:00,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:14:00 BoogieIcfgContainer [2022-07-21 08:14:00,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:14:00,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:14:00,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:14:00,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:14:00,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:13:59" (1/3) ... [2022-07-21 08:14:00,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c16f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:14:00, skipping insertion in model container [2022-07-21 08:14:00,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:00" (2/3) ... [2022-07-21 08:14:00,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c16f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:14:00, skipping insertion in model container [2022-07-21 08:14:00,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:14:00" (3/3) ... [2022-07-21 08:14:00,960 INFO L111 eAbstractionObserver]: Analyzing ICFG square_2+soft_float_4-2a.c.cil.c [2022-07-21 08:14:00,972 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:14:00,972 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:14:01,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:14:01,034 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@5c834161, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7217b644 [2022-07-21 08:14:01,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:14:01,038 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) [2022-07-21 08:14:01,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 08:14:01,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:14:01,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:14:01,057 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:14:01,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:14:01,063 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-07-21 08:14:01,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:14:01,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846999342] [2022-07-21 08:14:01,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:14:01,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:14:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:14:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:14:01,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:14:01,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846999342] [2022-07-21 08:14:01,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846999342] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:14:01,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:14:01,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:14:01,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194129148] [2022-07-21 08:14:01,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:14:01,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 08:14:01,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:14:01,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 08:14:01,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 08:14:01,224 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) [2022-07-21 08:14:01,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:14:01,274 INFO L93 Difference]: Finished difference Result 189 states and 310 transitions. [2022-07-21 08:14:01,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 08:14:01,281 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 [2022-07-21 08:14:01,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:14:01,288 INFO L225 Difference]: With dead ends: 189 [2022-07-21 08:14:01,288 INFO L226 Difference]: Without dead ends: 90 [2022-07-21 08:14:01,291 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 [2022-07-21 08:14:01,295 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 [2022-07-21 08:14:01,296 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] [2022-07-21 08:14:01,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-21 08:14:01,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-07-21 08:14:01,328 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) [2022-07-21 08:14:01,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 126 transitions. [2022-07-21 08:14:01,332 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 126 transitions. Word has length 7 [2022-07-21 08:14:01,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:14:01,333 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 126 transitions. [2022-07-21 08:14:01,333 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) [2022-07-21 08:14:01,333 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 126 transitions. [2022-07-21 08:14:01,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 08:14:01,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:14:01,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:14:01,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:14:01,335 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:14:01,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:14:01,336 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-07-21 08:14:01,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:14:01,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047748601] [2022-07-21 08:14:01,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:14:01,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:14:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:14:01,359 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:14:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:14:01,407 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 08:14:01,407 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:14:01,409 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-21 08:14:01,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-21 08:14:01,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:14:01,414 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 08:14:01,417 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:14:01,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:14:01 BoogieIcfgContainer [2022-07-21 08:14:01,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:14:01,440 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:14:01,440 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:14:01,440 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:14:01,441 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:14:00" (3/4) ... [2022-07-21 08:14:01,443 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 08:14:01,443 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:14:01,446 INFO L158 Benchmark]: Toolchain (without parser) took 1592.40ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 27.0MB in the beginning and 38.6MB in the end (delta: -11.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:14:01,447 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 50.3MB. Free memory was 31.9MB in the beginning and 31.9MB in the end (delta: 39.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:14:01,449 INFO L158 Benchmark]: CACSL2BoogieTranslator took 404.88ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 26.9MB in the beginning and 39.9MB in the end (delta: -13.1MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2022-07-21 08:14:01,450 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.26ms. Allocated memory is still 60.8MB. Free memory was 39.8MB in the beginning and 37.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:14:01,452 INFO L158 Benchmark]: Boogie Preprocessor took 53.32ms. Allocated memory is still 60.8MB. Free memory was 37.9MB in the beginning and 36.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:14:01,452 INFO L158 Benchmark]: RCFGBuilder took 584.66ms. Allocated memory is still 60.8MB. Free memory was 36.3MB in the beginning and 33.2MB in the end (delta: 3.0MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2022-07-21 08:14:01,453 INFO L158 Benchmark]: TraceAbstraction took 487.42ms. Allocated memory is still 60.8MB. Free memory was 32.8MB in the beginning and 38.9MB in the end (delta: -6.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:14:01,453 INFO L158 Benchmark]: Witness Printer took 3.78ms. Allocated memory is still 60.8MB. Free memory was 38.9MB in the beginning and 38.6MB in the end (delta: 323.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:14:01,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 50.3MB. Free memory was 31.9MB in the beginning and 31.9MB in the end (delta: 39.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 404.88ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 26.9MB in the beginning and 39.9MB in the end (delta: -13.1MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.26ms. Allocated memory is still 60.8MB. Free memory was 39.8MB in the beginning and 37.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.32ms. Allocated memory is still 60.8MB. Free memory was 37.9MB in the beginning and 36.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 584.66ms. Allocated memory is still 60.8MB. Free memory was 36.3MB in the beginning and 33.2MB in the end (delta: 3.0MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * TraceAbstraction took 487.42ms. Allocated memory is still 60.8MB. Free memory was 32.8MB in the beginning and 38.9MB in the end (delta: -6.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.78ms. Allocated memory is still 60.8MB. Free memory was 38.9MB in the beginning and 38.6MB in the end (delta: 323.0kB). 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 < 1.398f) 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 [2022-07-21 08:14:01,502 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 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_2+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 af68db482217344707737f8e87f1bf38c34023f3266d60519ba723388f89d51c --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:14:03,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:14:03,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:14:03,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:14:03,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:14:03,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:14:03,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:14:03,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:14:03,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:14:03,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:14:03,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:14:03,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:14:03,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:14:03,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:14:03,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:14:03,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:14:03,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:14:03,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:14:03,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:14:03,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:14:03,504 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:14:03,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:14:03,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:14:03,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:14:03,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:14:03,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:14:03,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:14:03,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:14:03,517 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:14:03,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:14:03,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:14:03,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:14:03,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:14:03,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:14:03,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:14:03,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:14:03,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:14:03,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:14:03,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:14:03,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:14:03,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:14:03,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:14:03,534 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 08:14:03,566 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:14:03,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:14:03,567 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:14:03,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:14:03,568 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:14:03,568 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:14:03,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:14:03,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:14:03,569 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:14:03,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:14:03,570 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:14:03,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:14:03,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:14:03,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:14:03,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:14:03,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:14:03,572 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 08:14:03,572 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 08:14:03,572 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 08:14:03,572 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:14:03,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:14:03,573 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:14:03,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:14:03,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:14:03,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:14:03,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:14:03,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:14:03,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:14:03,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:14:03,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:14:03,575 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 08:14:03,575 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 08:14:03,575 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:14:03,576 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:14:03,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:14:03,576 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 08:14:03,576 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af68db482217344707737f8e87f1bf38c34023f3266d60519ba723388f89d51c [2022-07-21 08:14:03,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:14:03,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:14:03,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:14:03,934 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:14:03,935 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:14:03,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c [2022-07-21 08:14:03,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6883cf624/7d9f01764bcf461997a65cde3243c05e/FLAG702b4ecd0 [2022-07-21 08:14:04,456 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:14:04,456 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c [2022-07-21 08:14:04,475 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6883cf624/7d9f01764bcf461997a65cde3243c05e/FLAG702b4ecd0 [2022-07-21 08:14:04,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6883cf624/7d9f01764bcf461997a65cde3243c05e [2022-07-21 08:14:04,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:14:04,825 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:14:04,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:14:04,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:14:04,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:14:04,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:14:04" (1/1) ... [2022-07-21 08:14:04,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d098627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:04, skipping insertion in model container [2022-07-21 08:14:04,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:14:04" (1/1) ... [2022-07-21 08:14:04,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:14:04,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:14:05,008 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_2+soft_float_4-2a.c.cil.c[1997,2010] [2022-07-21 08:14:05,015 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_2+soft_float_4-2a.c.cil.c[2391,2404] [2022-07-21 08:14:05,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:14:05,109 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:14:05,132 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_2+soft_float_4-2a.c.cil.c[1997,2010] [2022-07-21 08:14:05,135 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_2+soft_float_4-2a.c.cil.c[2391,2404] [2022-07-21 08:14:05,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:14:05,193 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:14:05,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:05 WrapperNode [2022-07-21 08:14:05,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:14:05,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:14:05,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:14:05,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:14:05,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:05" (1/1) ... [2022-07-21 08:14:05,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:05" (1/1) ... [2022-07-21 08:14:05,246 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2022-07-21 08:14:05,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:14:05,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:14:05,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:14:05,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:14:05,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:05" (1/1) ... [2022-07-21 08:14:05,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:05" (1/1) ... [2022-07-21 08:14:05,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:05" (1/1) ... [2022-07-21 08:14:05,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:05" (1/1) ... [2022-07-21 08:14:05,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:05" (1/1) ... [2022-07-21 08:14:05,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:05" (1/1) ... [2022-07-21 08:14:05,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:05" (1/1) ... [2022-07-21 08:14:05,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:14:05,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:14:05,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:14:05,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:14:05,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:05" (1/1) ... [2022-07-21 08:14:05,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:14:05,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:14:05,333 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) [2022-07-21 08:14:05,359 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 [2022-07-21 08:14:05,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:14:05,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 08:14:05,374 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-21 08:14:05,374 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-21 08:14:05,375 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-07-21 08:14:05,375 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-07-21 08:14:05,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:14:05,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:14:05,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 08:14:05,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 08:14:05,437 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:14:05,438 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:14:07,950 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:14:07,956 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:14:07,956 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 08:14:07,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:14:07 BoogieIcfgContainer [2022-07-21 08:14:07,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:14:07,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:14:07,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:14:07,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:14:07,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:14:04" (1/3) ... [2022-07-21 08:14:07,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7030c2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:14:07, skipping insertion in model container [2022-07-21 08:14:07,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:14:05" (2/3) ... [2022-07-21 08:14:07,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7030c2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:14:07, skipping insertion in model container [2022-07-21 08:14:07,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:14:07" (3/3) ... [2022-07-21 08:14:07,966 INFO L111 eAbstractionObserver]: Analyzing ICFG square_2+soft_float_4-2a.c.cil.c [2022-07-21 08:14:07,979 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:14:07,980 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:14:08,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:14:08,049 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@d001c44, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@67ffb150 [2022-07-21 08:14:08,049 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:14:08,053 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) [2022-07-21 08:14:08,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 08:14:08,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:14:08,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:14:08,061 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:14:08,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:14:08,066 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-07-21 08:14:08,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 08:14:08,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906145996] [2022-07-21 08:14:08,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:14:08,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 08:14:08,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 08:14:08,080 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) [2022-07-21 08:14:08,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 08:14:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:14:08,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 08:14:08,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:14:08,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:14:08,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:14:08,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 08:14:08,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906145996] [2022-07-21 08:14:08,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906145996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:14:08,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:14:08,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:14:08,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21276985] [2022-07-21 08:14:08,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:14:08,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 08:14:08,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 08:14:08,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 08:14:08,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 08:14:08,537 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) [2022-07-21 08:14:08,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:14:08,562 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2022-07-21 08:14:08,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 08:14:08,565 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 [2022-07-21 08:14:08,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:14:08,571 INFO L225 Difference]: With dead ends: 121 [2022-07-21 08:14:08,572 INFO L226 Difference]: Without dead ends: 56 [2022-07-21 08:14:08,576 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 [2022-07-21 08:14:08,584 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 [2022-07-21 08:14:08,586 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] [2022-07-21 08:14:08,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-21 08:14:08,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-07-21 08:14:08,618 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) [2022-07-21 08:14:08,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2022-07-21 08:14:08,621 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2022-07-21 08:14:08,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:14:08,622 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2022-07-21 08:14:08,622 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) [2022-07-21 08:14:08,622 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2022-07-21 08:14:08,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 08:14:08,623 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:14:08,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:14:08,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-21 08:14:08,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 08:14:08,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:14:08,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:14:08,829 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-07-21 08:14:08,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 08:14:08,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358466560] [2022-07-21 08:14:08,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:14:08,830 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 08:14:08,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 08:14:08,832 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) [2022-07-21 08:14:08,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 08:16:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:16:37,196 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:17:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:17:08,509 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-21 08:17:08,510 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:17:08,511 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-21 08:17:08,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-21 08:17:08,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 08:17:08,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 08:17:08,727 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 08:17:08,730 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:17:08,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:17:08 BoogieIcfgContainer [2022-07-21 08:17:08,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:17:08,751 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:17:08,751 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:17:08,751 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:17:08,751 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:14:07" (3/4) ... [2022-07-21 08:17:08,753 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-21 08:17:08,784 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 08:17:08,785 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:17:08,786 INFO L158 Benchmark]: Toolchain (without parser) took 183960.32ms. Allocated memory was 58.7MB in the beginning and 79.7MB in the end (delta: 21.0MB). Free memory was 37.3MB in the beginning and 50.6MB in the end (delta: -13.3MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2022-07-21 08:17:08,786 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 58.7MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:17:08,786 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.38ms. Allocated memory is still 58.7MB. Free memory was 37.1MB in the beginning and 38.7MB in the end (delta: -1.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 08:17:08,787 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.27ms. Allocated memory is still 58.7MB. Free memory was 38.5MB in the beginning and 36.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:17:08,787 INFO L158 Benchmark]: Boogie Preprocessor took 48.42ms. Allocated memory is still 58.7MB. Free memory was 36.8MB in the beginning and 35.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:17:08,788 INFO L158 Benchmark]: RCFGBuilder took 2661.57ms. Allocated memory was 58.7MB in the beginning and 79.7MB in the end (delta: 21.0MB). Free memory was 35.1MB in the beginning and 57.7MB in the end (delta: -22.6MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2022-07-21 08:17:08,788 INFO L158 Benchmark]: TraceAbstraction took 180789.86ms. Allocated memory is still 79.7MB. Free memory was 57.1MB in the beginning and 52.3MB in the end (delta: 4.8MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2022-07-21 08:17:08,789 INFO L158 Benchmark]: Witness Printer took 34.34ms. Allocated memory is still 79.7MB. Free memory was 52.3MB in the beginning and 50.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:17:08,791 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 58.7MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 368.38ms. Allocated memory is still 58.7MB. Free memory was 37.1MB in the beginning and 38.7MB in the end (delta: -1.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.27ms. Allocated memory is still 58.7MB. Free memory was 38.5MB in the beginning and 36.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.42ms. Allocated memory is still 58.7MB. Free memory was 36.8MB in the beginning and 35.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2661.57ms. Allocated memory was 58.7MB in the beginning and 79.7MB in the end (delta: 21.0MB). Free memory was 35.1MB in the beginning and 57.7MB in the end (delta: -22.6MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * TraceAbstraction took 180789.86ms. Allocated memory is still 79.7MB. Free memory was 57.1MB in the beginning and 52.3MB in the end (delta: 4.8MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Witness Printer took 34.34ms. Allocated memory is still 79.7MB. Free memory was 52.3MB in the beginning and 50.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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=0.9999999403953552, result=1.3984375, x=0.9999999403953552] [L47] COND TRUE !(result >= 0.0f && result < 1.398f) VAL [IN=0.9999999403953552, result=1.3984375, x=0.9999999403953552] [L48] reach_error() VAL [IN=0.9999999403953552, result=1.3984375, x=0.9999999403953552] - 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: 180.7s, 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, 148.7s 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! [2022-07-21 08:17:08,874 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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE