./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_1-2a.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 635a1e60678a5560c2d4f471b1621e4874af8f81f11429fca537539223b8f1e6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:40:52,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:40:52,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:40:52,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:40:52,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:40:52,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:40:52,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:40:52,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:40:52,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:40:52,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:40:52,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:40:52,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:40:52,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:40:52,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:40:52,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:40:52,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:40:52,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:40:52,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:40:52,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:40:52,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:40:52,247 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:40:52,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:40:52,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:40:52,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:40:52,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:40:52,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:40:52,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:40:52,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:40:52,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:40:52,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:40:52,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:40:52,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:40:52,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:40:52,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:40:52,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:40:52,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:40:52,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:40:52,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:40:52,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:40:52,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:40:52,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:40:52,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:40:52,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:40:52,286 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:40:52,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:40:52,287 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:40:52,287 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:40:52,288 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:40:52,288 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:40:52,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:40:52,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:40:52,289 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:40:52,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:40:52,290 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:40:52,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:40:52,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:40:52,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:40:52,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:40:52,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:40:52,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:40:52,291 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:40:52,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:40:52,291 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:40:52,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:40:52,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:40:52,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:40:52,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:40:52,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:40:52,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:40:52,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:40:52,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:40:52,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:40:52,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:40:52,293 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:40:52,293 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:40:52,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:40:52,294 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 635a1e60678a5560c2d4f471b1621e4874af8f81f11429fca537539223b8f1e6 [2022-07-19 20:40:52,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:40:52,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:40:52,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:40:52,495 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:40:52,495 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:40:52,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c [2022-07-19 20:40:52,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fef7c9f7e/1da25f78bbe345edaf28db00359f2330/FLAGb175a69d0 [2022-07-19 20:40:52,959 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:40:52,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c [2022-07-19 20:40:52,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fef7c9f7e/1da25f78bbe345edaf28db00359f2330/FLAGb175a69d0 [2022-07-19 20:40:52,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fef7c9f7e/1da25f78bbe345edaf28db00359f2330 [2022-07-19 20:40:52,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:40:52,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:40:52,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:40:52,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:40:52,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:40:52,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:40:52" (1/1) ... [2022-07-19 20:40:52,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65d13f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:52, skipping insertion in model container [2022-07-19 20:40:52,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:40:52" (1/1) ... [2022-07-19 20:40:52,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:40:53,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:40:53,155 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_1-2a.c.cil.c[1997,2010] [2022-07-19 20:40:53,158 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_1-2a.c.cil.c[2391,2404] [2022-07-19 20:40:53,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:40:53,198 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:40:53,206 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_1-2a.c.cil.c[1997,2010] [2022-07-19 20:40:53,207 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_1-2a.c.cil.c[2391,2404] [2022-07-19 20:40:53,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:40:53,254 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:40:53,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:53 WrapperNode [2022-07-19 20:40:53,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:40:53,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:40:53,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:40:53,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:40:53,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:53" (1/1) ... [2022-07-19 20:40:53,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:53" (1/1) ... [2022-07-19 20:40:53,299 INFO L137 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 235 [2022-07-19 20:40:53,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:40:53,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:40:53,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:40:53,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:40:53,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:53" (1/1) ... [2022-07-19 20:40:53,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:53" (1/1) ... [2022-07-19 20:40:53,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:53" (1/1) ... [2022-07-19 20:40:53,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:53" (1/1) ... [2022-07-19 20:40:53,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:53" (1/1) ... [2022-07-19 20:40:53,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:53" (1/1) ... [2022-07-19 20:40:53,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:53" (1/1) ... [2022-07-19 20:40:53,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:40:53,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:40:53,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:40:53,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:40:53,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:53" (1/1) ... [2022-07-19 20:40:53,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:40:53,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:40:53,360 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) [2022-07-19 20:40:53,366 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 [2022-07-19 20:40:53,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:40:53,400 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-19 20:40:53,400 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-19 20:40:53,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:40:53,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:40:53,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:40:53,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 20:40:53,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 20:40:53,477 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:40:53,478 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:40:53,807 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:40:53,813 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:40:53,815 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 20:40:53,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:40:53 BoogieIcfgContainer [2022-07-19 20:40:53,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:40:53,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:40:53,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:40:53,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:40:53,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:40:52" (1/3) ... [2022-07-19 20:40:53,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1617a717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:40:53, skipping insertion in model container [2022-07-19 20:40:53,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:53" (2/3) ... [2022-07-19 20:40:53,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1617a717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:40:53, skipping insertion in model container [2022-07-19 20:40:53,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:40:53" (3/3) ... [2022-07-19 20:40:53,826 INFO L111 eAbstractionObserver]: Analyzing ICFG square_2+soft_float_1-2a.c.cil.c [2022-07-19 20:40:53,841 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:40:53,841 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:40:53,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:40:53,916 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@423aa8d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@623cdeaf [2022-07-19 20:40:53,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:40:53,921 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 102 states have (on average 1.7058823529411764) internal successors, (174), 106 states have internal predecessors, (174), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 20:40:53,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 20:40:53,927 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:40:53,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:40:53,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:40:53,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:40:53,944 INFO L85 PathProgramCache]: Analyzing trace with hash -685161840, now seen corresponding path program 1 times [2022-07-19 20:40:53,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:40:53,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921325810] [2022-07-19 20:40:53,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:40:53,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:40:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:40:54,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:40:54,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:40:54,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921325810] [2022-07-19 20:40:54,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921325810] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:40:54,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:40:54,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 20:40:54,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951945608] [2022-07-19 20:40:54,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:40:54,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 20:40:54,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:40:54,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 20:40:54,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 20:40:54,084 INFO L87 Difference]: Start difference. First operand has 115 states, 102 states have (on average 1.7058823529411764) internal successors, (174), 106 states have internal predecessors, (174), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 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) [2022-07-19 20:40:54,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:40:54,109 INFO L93 Difference]: Finished difference Result 225 states and 380 transitions. [2022-07-19 20:40:54,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 20:40:54,110 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 [2022-07-19 20:40:54,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:40:54,116 INFO L225 Difference]: With dead ends: 225 [2022-07-19 20:40:54,116 INFO L226 Difference]: Without dead ends: 108 [2022-07-19 20:40:54,118 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 [2022-07-19 20:40:54,120 INFO L413 NwaCegarLoop]: 169 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, 169 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 [2022-07-19 20:40:54,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:40:54,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-07-19 20:40:54,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-07-19 20:40:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 96 states have (on average 1.5104166666666667) internal successors, (145), 99 states have internal predecessors, (145), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-19 20:40:54,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 160 transitions. [2022-07-19 20:40:54,151 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 160 transitions. Word has length 7 [2022-07-19 20:40:54,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:40:54,152 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 160 transitions. [2022-07-19 20:40:54,152 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) [2022-07-19 20:40:54,152 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 160 transitions. [2022-07-19 20:40:54,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 20:40:54,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:40:54,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:40:54,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:40:54,153 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:40:54,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:40:54,154 INFO L85 PathProgramCache]: Analyzing trace with hash -685102258, now seen corresponding path program 1 times [2022-07-19 20:40:54,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:40:54,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694961847] [2022-07-19 20:40:54,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:40:54,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:40:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 20:40:54,166 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 20:40:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 20:40:54,188 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 20:40:54,188 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 20:40:54,190 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-19 20:40:54,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-19 20:40:54,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:40:54,193 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 20:40:54,195 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 20:40:54,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 08:40:54 BoogieIcfgContainer [2022-07-19 20:40:54,208 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 20:40:54,208 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 20:40:54,209 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 20:40:54,209 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 20:40:54,209 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:40:53" (3/4) ... [2022-07-19 20:40:54,211 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 20:40:54,211 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 20:40:54,213 INFO L158 Benchmark]: Toolchain (without parser) took 1230.82ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 76.9MB in the beginning and 86.7MB in the end (delta: -9.8MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2022-07-19 20:40:54,213 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 20:40:54,213 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.70ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 76.7MB in the beginning and 100.9MB in the end (delta: -24.2MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2022-07-19 20:40:54,214 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.79ms. Allocated memory is still 132.1MB. Free memory was 100.9MB in the beginning and 98.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 20:40:54,214 INFO L158 Benchmark]: Boogie Preprocessor took 37.88ms. Allocated memory is still 132.1MB. Free memory was 98.4MB in the beginning and 96.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 20:40:54,215 INFO L158 Benchmark]: RCFGBuilder took 479.45ms. Allocated memory is still 132.1MB. Free memory was 96.7MB in the beginning and 76.1MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-07-19 20:40:54,216 INFO L158 Benchmark]: TraceAbstraction took 388.56ms. Allocated memory is still 132.1MB. Free memory was 75.6MB in the beginning and 87.4MB in the end (delta: -11.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 20:40:54,216 INFO L158 Benchmark]: Witness Printer took 2.99ms. Allocated memory is still 132.1MB. Free memory was 87.4MB in the beginning and 86.7MB in the end (delta: 687.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 20:40:54,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.70ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 76.7MB in the beginning and 100.9MB in the end (delta: -24.2MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.79ms. Allocated memory is still 132.1MB. Free memory was 100.9MB in the beginning and 98.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.88ms. Allocated memory is still 132.1MB. Free memory was 98.4MB in the beginning and 96.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 479.45ms. Allocated memory is still 132.1MB. Free memory was 96.7MB in the beginning and 76.1MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 388.56ms. Allocated memory is still 132.1MB. Free memory was 75.6MB in the beginning and 87.4MB in the end (delta: -11.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.99ms. Allocated memory is still 132.1MB. Free memory was 87.4MB in the beginning and 86.7MB in the end (delta: 687.2kB). 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: [L403] COND TRUE __VERIFIER_nondet_int() [L404] 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 3 procedures, 115 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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, 169 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, 169 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=115occurred 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 [2022-07-19 20:40:54,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_2+soft_float_1-2a.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 635a1e60678a5560c2d4f471b1621e4874af8f81f11429fca537539223b8f1e6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:40:55,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:40:55,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:40:55,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:40:55,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:40:55,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:40:55,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:40:55,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:40:55,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:40:55,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:40:55,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:40:55,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:40:55,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:40:55,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:40:55,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:40:55,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:40:55,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:40:55,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:40:55,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:40:55,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:40:55,963 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:40:55,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:40:55,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:40:55,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:40:55,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:40:55,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:40:55,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:40:55,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:40:55,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:40:55,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:40:55,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:40:55,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:40:55,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:40:55,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:40:55,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:40:55,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:40:55,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:40:55,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:40:55,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:40:55,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:40:55,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:40:55,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:40:55,975 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 20:40:55,989 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:40:55,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:40:55,989 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:40:55,989 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:40:55,990 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:40:55,990 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:40:55,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:40:55,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:40:55,991 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:40:55,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:40:55,991 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:40:55,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:40:55,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:40:55,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:40:55,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:40:55,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:40:55,992 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 20:40:55,992 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 20:40:55,992 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 20:40:55,992 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:40:55,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:40:55,993 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:40:55,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:40:55,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:40:55,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:40:55,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:40:55,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:40:55,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:40:55,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:40:55,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:40:55,994 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 20:40:55,994 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 20:40:55,994 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:40:55,994 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:40:55,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:40:55,995 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 20:40:55,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 635a1e60678a5560c2d4f471b1621e4874af8f81f11429fca537539223b8f1e6 [2022-07-19 20:40:56,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:40:56,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:40:56,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:40:56,267 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:40:56,267 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:40:56,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c [2022-07-19 20:40:56,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a334ec336/805280bc65a944eb81cd5949404b0a74/FLAGbfa264599 [2022-07-19 20:40:56,707 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:40:56,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c [2022-07-19 20:40:56,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a334ec336/805280bc65a944eb81cd5949404b0a74/FLAGbfa264599 [2022-07-19 20:40:57,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a334ec336/805280bc65a944eb81cd5949404b0a74 [2022-07-19 20:40:57,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:40:57,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:40:57,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:40:57,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:40:57,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:40:57,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:40:57" (1/1) ... [2022-07-19 20:40:57,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@521ca47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:57, skipping insertion in model container [2022-07-19 20:40:57,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:40:57" (1/1) ... [2022-07-19 20:40:57,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:40:57,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:40:57,237 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_1-2a.c.cil.c[1997,2010] [2022-07-19 20:40:57,240 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_1-2a.c.cil.c[2391,2404] [2022-07-19 20:40:57,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:40:57,312 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:40:57,321 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_1-2a.c.cil.c[1997,2010] [2022-07-19 20:40:57,322 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_1-2a.c.cil.c[2391,2404] [2022-07-19 20:40:57,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:40:57,356 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:40:57,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:57 WrapperNode [2022-07-19 20:40:57,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:40:57,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:40:57,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:40:57,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:40:57,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:57" (1/1) ... [2022-07-19 20:40:57,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:57" (1/1) ... [2022-07-19 20:40:57,395 INFO L137 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 165 [2022-07-19 20:40:57,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:40:57,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:40:57,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:40:57,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:40:57,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:57" (1/1) ... [2022-07-19 20:40:57,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:57" (1/1) ... [2022-07-19 20:40:57,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:57" (1/1) ... [2022-07-19 20:40:57,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:57" (1/1) ... [2022-07-19 20:40:57,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:57" (1/1) ... [2022-07-19 20:40:57,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:57" (1/1) ... [2022-07-19 20:40:57,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:57" (1/1) ... [2022-07-19 20:40:57,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:40:57,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:40:57,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:40:57,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:40:57,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:57" (1/1) ... [2022-07-19 20:40:57,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:40:57,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:40:57,501 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) [2022-07-19 20:40:57,551 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 [2022-07-19 20:40:57,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:40:57,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 20:40:57,572 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-07-19 20:40:57,572 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-07-19 20:40:57,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:40:57,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:40:57,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 20:40:57,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 20:40:57,627 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:40:57,629 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:41:00,107 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:41:00,112 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:41:00,112 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 20:41:00,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:41:00 BoogieIcfgContainer [2022-07-19 20:41:00,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:41:00,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:41:00,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:41:00,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:41:00,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:40:57" (1/3) ... [2022-07-19 20:41:00,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bf60c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:41:00, skipping insertion in model container [2022-07-19 20:41:00,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:40:57" (2/3) ... [2022-07-19 20:41:00,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bf60c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:41:00, skipping insertion in model container [2022-07-19 20:41:00,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:41:00" (3/3) ... [2022-07-19 20:41:00,142 INFO L111 eAbstractionObserver]: Analyzing ICFG square_2+soft_float_1-2a.c.cil.c [2022-07-19 20:41:00,152 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:41:00,156 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:41:00,203 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:41:00,207 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@1112be7f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5196b06 [2022-07-19 20:41:00,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:41:00,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 20:41:00,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 20:41:00,214 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:41:00,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:41:00,215 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:41:00,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:41:00,218 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-07-19 20:41:00,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 20:41:00,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060728680] [2022-07-19 20:41:00,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:41:00,226 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 20:41:00,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 20:41:00,228 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) [2022-07-19 20:41:00,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 20:41:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:41:00,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 20:41:00,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:41:00,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:41:00,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:41:00,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 20:41:00,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060728680] [2022-07-19 20:41:00,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060728680] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:41:00,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:41:00,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 20:41:00,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560771048] [2022-07-19 20:41:00,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:41:00,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 20:41:00,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 20:41:00,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 20:41:00,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 20:41:00,661 INFO L87 Difference]: Start difference. First operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 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) [2022-07-19 20:41:00,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:41:00,693 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions. [2022-07-19 20:41:00,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 20:41:00,696 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 [2022-07-19 20:41:00,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:41:00,705 INFO L225 Difference]: With dead ends: 157 [2022-07-19 20:41:00,705 INFO L226 Difference]: Without dead ends: 74 [2022-07-19 20:41:00,715 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 [2022-07-19 20:41:00,720 INFO L413 NwaCegarLoop]: 116 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, 116 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 [2022-07-19 20:41:00,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:41:00,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-07-19 20:41:00,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-07-19 20:41:00,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 65 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-19 20:41:00,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions. [2022-07-19 20:41:00,765 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 7 [2022-07-19 20:41:00,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:41:00,766 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions. [2022-07-19 20:41:00,766 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) [2022-07-19 20:41:00,767 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions. [2022-07-19 20:41:00,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 20:41:00,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:41:00,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:41:00,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-19 20:41:00,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 20:41:00,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:41:00,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:41:00,983 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-07-19 20:41:00,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 20:41:00,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231301721] [2022-07-19 20:41:00,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:41:00,984 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 20:41:00,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 20:41:00,996 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) [2022-07-19 20:41:00,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-19 20:41:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 20:41:07,518 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 20:42:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 20:42:33,310 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-19 20:42:33,311 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 20:42:33,312 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-19 20:42:33,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-19 20:42:33,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-19 20:42:33,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 20:42:33,517 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 20:42:33,519 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 20:42:33,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 08:42:33 BoogieIcfgContainer [2022-07-19 20:42:33,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 20:42:33,535 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 20:42:33,535 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 20:42:33,535 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 20:42:33,535 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:41:00" (3/4) ... [2022-07-19 20:42:33,536 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-19 20:42:33,558 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 20:42:33,559 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 20:42:33,559 INFO L158 Benchmark]: Toolchain (without parser) took 96453.29ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 52.3MB in the beginning and 45.5MB in the end (delta: 6.8MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2022-07-19 20:42:33,560 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 69.2MB. Free memory is still 52.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 20:42:33,561 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.92ms. Allocated memory is still 69.2MB. Free memory was 52.1MB in the beginning and 49.9MB in the end (delta: 2.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 20:42:33,561 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.64ms. Allocated memory is still 69.2MB. Free memory was 49.6MB in the beginning and 47.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 20:42:33,562 INFO L158 Benchmark]: Boogie Preprocessor took 51.23ms. Allocated memory is still 69.2MB. Free memory was 47.8MB in the beginning and 45.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 20:42:33,562 INFO L158 Benchmark]: RCFGBuilder took 2683.02ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 45.7MB in the beginning and 72.2MB in the end (delta: -26.6MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2022-07-19 20:42:33,563 INFO L158 Benchmark]: TraceAbstraction took 93401.37ms. Allocated memory is still 90.2MB. Free memory was 71.8MB in the beginning and 47.1MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-07-19 20:42:33,563 INFO L158 Benchmark]: Witness Printer took 24.19ms. Allocated memory is still 90.2MB. Free memory was 47.1MB in the beginning and 45.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 20:42:33,564 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 69.2MB. Free memory is still 52.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 243.92ms. Allocated memory is still 69.2MB. Free memory was 52.1MB in the beginning and 49.9MB in the end (delta: 2.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.64ms. Allocated memory is still 69.2MB. Free memory was 49.6MB in the beginning and 47.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.23ms. Allocated memory is still 69.2MB. Free memory was 47.8MB in the beginning and 45.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2683.02ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 45.7MB in the beginning and 72.2MB in the end (delta: -26.6MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. * TraceAbstraction took 93401.37ms. Allocated memory is still 90.2MB. Free memory was 71.8MB in the beginning and 47.1MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 24.19ms. Allocated memory is still 90.2MB. Free memory was 47.1MB in the beginning and 45.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 48]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L403] COND TRUE __VERIFIER_nondet_int() [L404] 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 3 procedures, 81 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 93.3s, 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, 116 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, 116 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=81occurred 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, 6.8s 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! [2022-07-19 20:42:33,633 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