./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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_6+soft_float_4-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f32113811de2ab4c3fb74e14d99b17c8b125c39361fe4dfe371ba0cd2a7c43ad --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:19:25,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:19:25,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:19:25,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:19:25,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:19:25,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:19:25,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:19:25,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:19:25,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:19:25,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:19:25,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:19:25,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:19:25,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:19:25,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:19:25,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:19:25,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:19:25,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:19:25,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:19:25,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:19:25,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:19:25,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:19:25,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:19:25,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:19:25,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:19:25,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:19:25,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:19:25,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:19:25,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:19:25,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:19:25,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:19:25,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:19:25,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:19:25,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:19:25,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:19:25,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:19:25,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:19:25,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:19:25,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:19:25,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:19:25,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:19:25,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:19:25,294 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 13:19:25,315 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:19:25,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:19:25,316 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:19:25,316 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:19:25,317 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:19:25,317 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:19:25,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:19:25,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:19:25,318 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:19:25,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:19:25,318 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:19:25,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:19:25,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:19:25,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:19:25,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:19:25,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:19:25,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:19:25,319 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:19:25,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:19:25,320 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:19:25,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:19:25,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:19:25,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:19:25,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:19:25,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:19:25,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:19:25,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:19:25,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:19:25,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:19:25,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:19:25,322 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:19:25,322 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:19:25,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:19:25,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:19:25,322 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f32113811de2ab4c3fb74e14d99b17c8b125c39361fe4dfe371ba0cd2a7c43ad [2021-12-22 13:19:25,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:19:25,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:19:25,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:19:25,533 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:19:25,534 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:19:25,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c [2021-12-22 13:19:25,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8250d1b5b/248d02c2d71541e087fe7179a6c041af/FLAGcc70112ca [2021-12-22 13:19:25,912 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:19:25,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c [2021-12-22 13:19:25,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8250d1b5b/248d02c2d71541e087fe7179a6c041af/FLAGcc70112ca [2021-12-22 13:19:26,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8250d1b5b/248d02c2d71541e087fe7179a6c041af [2021-12-22 13:19:26,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:19:26,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:19:26,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:19:26,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:19:26,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:19:26,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:19:26" (1/1) ... [2021-12-22 13:19:26,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72508a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:26, skipping insertion in model container [2021-12-22 13:19:26,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:19:26" (1/1) ... [2021-12-22 13:19:26,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:19:26,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:19:26,507 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_6+soft_float_4-2a.c.cil.c[1997,2010] [2021-12-22 13:19:26,511 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_6+soft_float_4-2a.c.cil.c[2391,2404] [2021-12-22 13:19:26,544 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:19:26,549 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:19:26,559 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_6+soft_float_4-2a.c.cil.c[1997,2010] [2021-12-22 13:19:26,560 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_6+soft_float_4-2a.c.cil.c[2391,2404] [2021-12-22 13:19:26,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:19:26,592 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:19:26,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:26 WrapperNode [2021-12-22 13:19:26,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:19:26,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:19:26,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:19:26,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:19:26,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:26" (1/1) ... [2021-12-22 13:19:26,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:26" (1/1) ... [2021-12-22 13:19:26,621 INFO L137 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2021-12-22 13:19:26,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:19:26,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:19:26,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:19:26,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:19:26,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:26" (1/1) ... [2021-12-22 13:19:26,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:26" (1/1) ... [2021-12-22 13:19:26,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:26" (1/1) ... [2021-12-22 13:19:26,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:26" (1/1) ... [2021-12-22 13:19:26,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:26" (1/1) ... [2021-12-22 13:19:26,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:26" (1/1) ... [2021-12-22 13:19:26,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:26" (1/1) ... [2021-12-22 13:19:26,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:19:26,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:19:26,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:19:26,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:19:26,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:26" (1/1) ... [2021-12-22 13:19:26,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:19:26,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:19:26,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 13:19:26,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 13:19:26,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:19:26,714 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-22 13:19:26,714 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-22 13:19:26,714 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-22 13:19:26,716 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-22 13:19:26,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:19:26,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:19:26,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:19:26,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 13:19:26,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 13:19:26,768 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:19:26,769 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:19:26,937 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:19:26,943 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:19:26,943 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 13:19:26,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:19:26 BoogieIcfgContainer [2021-12-22 13:19:26,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:19:26,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:19:26,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:19:26,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:19:26,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:19:26" (1/3) ... [2021-12-22 13:19:26,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f08a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:19:26, skipping insertion in model container [2021-12-22 13:19:26,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:26" (2/3) ... [2021-12-22 13:19:26,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f08a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:19:26, skipping insertion in model container [2021-12-22 13:19:26,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:19:26" (3/3) ... [2021-12-22 13:19:26,951 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_4-2a.c.cil.c [2021-12-22 13:19:26,955 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:19:26,955 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 13:19:26,990 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:19:26,995 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 13:19:27,003 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 13:19:27,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-22 13:19:27,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 13:19:27,024 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:19:27,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:19:27,025 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:19:27,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:19:27,031 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-22 13:19:27,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:19:27,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724848862] [2021-12-22 13:19:27,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:19:27,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:19:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:19:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:19:27,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:19:27,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724848862] [2021-12-22 13:19:27,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724848862] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:19:27,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:19:27,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 13:19:27,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397896958] [2021-12-22 13:19:27,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:19:27,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 13:19:27,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:19:27,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 13:19:27,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 13:19:27,170 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:19:27,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:19:27,193 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-12-22 13:19:27,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 13:19:27,201 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 [2021-12-22 13:19:27,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:19:27,207 INFO L225 Difference]: With dead ends: 121 [2021-12-22 13:19:27,215 INFO L226 Difference]: Without dead ends: 56 [2021-12-22 13:19:27,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 13:19:27,222 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:19:27,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:19:27,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-22 13:19:27,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-22 13:19:27,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-22 13:19:27,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-12-22 13:19:27,293 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-12-22 13:19:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:19:27,293 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-12-22 13:19:27,293 INFO L471 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) [2021-12-22 13:19:27,294 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-12-22 13:19:27,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 13:19:27,294 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:19:27,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:19:27,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:19:27,296 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:19:27,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:19:27,302 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-22 13:19:27,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:19:27,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960085591] [2021-12-22 13:19:27,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:19:27,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:19:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 13:19:27,336 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 13:19:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 13:19:27,370 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 13:19:27,370 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 13:19:27,371 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-22 13:19:27,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-22 13:19:27,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 13:19:27,379 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-22 13:19:27,382 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 13:19:27,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 01:19:27 BoogieIcfgContainer [2021-12-22 13:19:27,406 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 13:19:27,407 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 13:19:27,407 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 13:19:27,408 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 13:19:27,408 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:19:26" (3/4) ... [2021-12-22 13:19:27,411 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 13:19:27,411 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 13:19:27,413 INFO L158 Benchmark]: Toolchain (without parser) took 1074.09ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 69.1MB in the beginning and 103.0MB in the end (delta: -33.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:19:27,413 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 107.0MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:19:27,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.27ms. Allocated memory is still 107.0MB. Free memory was 68.9MB in the beginning and 78.8MB in the end (delta: -9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 13:19:27,416 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.94ms. Allocated memory is still 107.0MB. Free memory was 78.8MB in the beginning and 76.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 13:19:27,416 INFO L158 Benchmark]: Boogie Preprocessor took 28.06ms. Allocated memory is still 107.0MB. Free memory was 76.9MB in the beginning and 75.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:19:27,418 INFO L158 Benchmark]: RCFGBuilder took 294.69ms. Allocated memory is still 107.0MB. Free memory was 75.5MB in the beginning and 62.6MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-22 13:19:27,419 INFO L158 Benchmark]: TraceAbstraction took 459.75ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 62.2MB in the beginning and 103.0MB in the end (delta: -40.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:19:27,419 INFO L158 Benchmark]: Witness Printer took 3.66ms. Allocated memory is still 130.0MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:19:27,425 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 107.0MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.27ms. Allocated memory is still 107.0MB. Free memory was 68.9MB in the beginning and 78.8MB in the end (delta: -9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.94ms. Allocated memory is still 107.0MB. Free memory was 78.8MB in the beginning and 76.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.06ms. Allocated memory is still 107.0MB. Free memory was 76.9MB in the beginning and 75.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 294.69ms. Allocated memory is still 107.0MB. Free memory was 75.5MB in the beginning and 62.6MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 459.75ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 62.2MB in the beginning and 103.0MB in the end (delta: -40.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.66ms. Allocated memory is still 130.0MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.399f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 63 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 81 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s 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 [2021-12-22 13:19:27,463 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_6+soft_float_4-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f32113811de2ab4c3fb74e14d99b17c8b125c39361fe4dfe371ba0cd2a7c43ad --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:19:29,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:19:29,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:19:29,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:19:29,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:19:29,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:19:29,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:19:29,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:19:29,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:19:29,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:19:29,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:19:29,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:19:29,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:19:29,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:19:29,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:19:29,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:19:29,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:19:29,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:19:29,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:19:29,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:19:29,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:19:29,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:19:29,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:19:29,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:19:29,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:19:29,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:19:29,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:19:29,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:19:29,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:19:29,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:19:29,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:19:29,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:19:29,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:19:29,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:19:29,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:19:29,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:19:29,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:19:29,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:19:29,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:19:29,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:19:29,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:19:29,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-22 13:19:29,491 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:19:29,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:19:29,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:19:29,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:19:29,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:19:29,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:19:29,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:19:29,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:19:29,495 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:19:29,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:19:29,496 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:19:29,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:19:29,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:19:29,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:19:29,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:19:29,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:19:29,497 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 13:19:29,497 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 13:19:29,498 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 13:19:29,498 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:19:29,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:19:29,498 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:19:29,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:19:29,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:19:29,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:19:29,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:19:29,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:19:29,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:19:29,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:19:29,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:19:29,504 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 13:19:29,505 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 13:19:29,505 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:19:29,505 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:19:29,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:19:29,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:19:29,506 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 13:19:29,506 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f32113811de2ab4c3fb74e14d99b17c8b125c39361fe4dfe371ba0cd2a7c43ad [2021-12-22 13:19:29,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:19:29,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:19:29,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:19:29,831 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:19:29,831 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:19:29,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c [2021-12-22 13:19:29,884 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/353581d34/dfeb4b4c03574c888024f4585447f00b/FLAG173e0ce63 [2021-12-22 13:19:30,256 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:19:30,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_4-2a.c.cil.c [2021-12-22 13:19:30,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/353581d34/dfeb4b4c03574c888024f4585447f00b/FLAG173e0ce63 [2021-12-22 13:19:30,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/353581d34/dfeb4b4c03574c888024f4585447f00b [2021-12-22 13:19:30,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:19:30,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:19:30,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:19:30,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:19:30,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:19:30,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:19:30" (1/1) ... [2021-12-22 13:19:30,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ae78205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:30, skipping insertion in model container [2021-12-22 13:19:30,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:19:30" (1/1) ... [2021-12-22 13:19:30,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:19:30,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:19:30,825 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_6+soft_float_4-2a.c.cil.c[1997,2010] [2021-12-22 13:19:30,830 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_6+soft_float_4-2a.c.cil.c[2391,2404] [2021-12-22 13:19:30,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:19:30,883 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:19:30,918 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_6+soft_float_4-2a.c.cil.c[1997,2010] [2021-12-22 13:19:30,919 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_6+soft_float_4-2a.c.cil.c[2391,2404] [2021-12-22 13:19:30,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:19:30,950 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:19:30,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:30 WrapperNode [2021-12-22 13:19:30,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:19:30,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:19:30,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:19:30,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:19:30,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:30" (1/1) ... [2021-12-22 13:19:30,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:30" (1/1) ... [2021-12-22 13:19:30,982 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2021-12-22 13:19:30,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:19:30,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:19:30,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:19:30,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:19:30,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:30" (1/1) ... [2021-12-22 13:19:30,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:30" (1/1) ... [2021-12-22 13:19:30,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:30" (1/1) ... [2021-12-22 13:19:30,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:30" (1/1) ... [2021-12-22 13:19:31,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:30" (1/1) ... [2021-12-22 13:19:31,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:30" (1/1) ... [2021-12-22 13:19:31,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:30" (1/1) ... [2021-12-22 13:19:31,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:19:31,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:19:31,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:19:31,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:19:31,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:30" (1/1) ... [2021-12-22 13:19:31,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:19:31,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:19:31,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 13:19:31,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 13:19:31,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:19:31,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 13:19:31,098 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-22 13:19:31,098 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-22 13:19:31,099 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-22 13:19:31,099 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-22 13:19:31,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:19:31,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:19:31,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 13:19:31,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 13:19:31,189 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:19:31,195 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:19:33,701 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:19:33,707 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:19:33,707 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 13:19:33,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:19:33 BoogieIcfgContainer [2021-12-22 13:19:33,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:19:33,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:19:33,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:19:33,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:19:33,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:19:30" (1/3) ... [2021-12-22 13:19:33,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3ddedf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:19:33, skipping insertion in model container [2021-12-22 13:19:33,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:19:30" (2/3) ... [2021-12-22 13:19:33,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3ddedf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:19:33, skipping insertion in model container [2021-12-22 13:19:33,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:19:33" (3/3) ... [2021-12-22 13:19:33,715 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_4-2a.c.cil.c [2021-12-22 13:19:33,719 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:19:33,719 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 13:19:33,755 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:19:33,761 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 13:19:33,761 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 13:19:33,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-22 13:19:33,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 13:19:33,777 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:19:33,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:19:33,778 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:19:33,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:19:33,782 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-22 13:19:33,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 13:19:33,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859014994] [2021-12-22 13:19:33,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:19:33,792 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 13:19:33,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 13:19:33,799 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 13:19:33,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-22 13:19:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:19:34,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 13:19:34,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:19:34,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:19:34,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:19:34,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 13:19:34,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859014994] [2021-12-22 13:19:34,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859014994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:19:34,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:19:34,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 13:19:34,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699547363] [2021-12-22 13:19:34,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:19:34,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 13:19:34,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 13:19:34,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 13:19:34,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 13:19:34,287 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:19:34,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:19:34,327 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-12-22 13:19:34,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 13:19:34,329 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 [2021-12-22 13:19:34,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:19:34,335 INFO L225 Difference]: With dead ends: 121 [2021-12-22 13:19:34,335 INFO L226 Difference]: Without dead ends: 56 [2021-12-22 13:19:34,337 INFO L932 BasicCegarLoop]: 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 [2021-12-22 13:19:34,340 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:19:34,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:19:34,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-22 13:19:34,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-22 13:19:34,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-22 13:19:34,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-12-22 13:19:34,375 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-12-22 13:19:34,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:19:34,375 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-12-22 13:19:34,376 INFO L471 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) [2021-12-22 13:19:34,376 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-12-22 13:19:34,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 13:19:34,376 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:19:34,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:19:34,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-22 13:19:34,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 13:19:34,580 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:19:34,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:19:34,582 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-22 13:19:34,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 13:19:34,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978170781] [2021-12-22 13:19:34,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:19:34,583 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 13:19:34,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 13:19:34,587 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 13:19:34,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process