/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/floats-cdfpl/newton_3_7.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:05:29,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:05:29,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:05:29,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:05:29,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:05:29,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:05:29,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:05:29,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:05:29,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:05:29,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:05:29,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:05:29,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:05:29,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:05:29,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:05:29,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:05:29,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:05:29,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:05:29,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:05:29,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:05:29,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:05:29,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:05:29,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:05:29,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:05:29,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:05:29,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 06:05:29,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:05:29,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:05:29,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:05:29,419 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 06:05:29,449 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:05:29,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:05:29,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:05:29,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:05:29,454 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:05:29,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:05:29,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:05:29,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:05:29,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:05:29,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:05:29,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:05:29,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:05:29,455 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:05:29,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:05:29,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:05:29,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:05:29,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:05:29,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:05:29,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:05:29,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:05:29,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:05:29,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:05:29,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:05:29,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:05:29,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:05:29,458 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:05:29,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:05:29,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:05:29,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:05:29,864 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:05:29,864 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:05:29,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2020-12-23 06:05:29,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/37563a846/9c689eacec7942828caafe0f07c760fb/FLAGd8860bb40 [2020-12-23 06:05:30,555 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:05:30,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2020-12-23 06:05:30,564 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/37563a846/9c689eacec7942828caafe0f07c760fb/FLAGd8860bb40 [2020-12-23 06:05:30,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/37563a846/9c689eacec7942828caafe0f07c760fb [2020-12-23 06:05:30,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:05:30,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:05:30,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:05:30,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:05:30,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:05:30,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:05:30" (1/1) ... [2020-12-23 06:05:30,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64d84841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:30, skipping insertion in model container [2020-12-23 06:05:30,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:05:30" (1/1) ... [2020-12-23 06:05:30,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:05:30,981 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2020-12-23 06:05:31,146 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1266,1279] [2020-12-23 06:05:31,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:05:31,161 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2020-12-23 06:05:31,183 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1266,1279] [2020-12-23 06:05:31,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:05:31,200 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:05:31,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:31 WrapperNode [2020-12-23 06:05:31,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:05:31,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:05:31,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:05:31,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:05:31,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:31" (1/1) ... [2020-12-23 06:05:31,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:31" (1/1) ... [2020-12-23 06:05:31,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:05:31,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:05:31,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:05:31,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:05:31,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:31" (1/1) ... [2020-12-23 06:05:31,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:31" (1/1) ... [2020-12-23 06:05:31,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:31" (1/1) ... [2020-12-23 06:05:31,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:31" (1/1) ... [2020-12-23 06:05:31,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:31" (1/1) ... [2020-12-23 06:05:31,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:31" (1/1) ... [2020-12-23 06:05:31,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:31" (1/1) ... [2020-12-23 06:05:31,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:05:31,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:05:31,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:05:31,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:05:31,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:05:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:05:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:05:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:05:31,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:05:31,600 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:05:31,600 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-23 06:05:31,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:05:31 BoogieIcfgContainer [2020-12-23 06:05:31,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:05:31,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:05:31,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:05:31,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:05:31,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:05:30" (1/3) ... [2020-12-23 06:05:31,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2597cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:05:31, skipping insertion in model container [2020-12-23 06:05:31,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:31" (2/3) ... [2020-12-23 06:05:31,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2597cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:05:31, skipping insertion in model container [2020-12-23 06:05:31,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:05:31" (3/3) ... [2020-12-23 06:05:31,626 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_7.i [2020-12-23 06:05:31,642 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:05:31,654 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:05:31,705 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:05:31,771 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:05:31,771 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:05:31,771 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:05:31,771 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:05:31,771 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:05:31,772 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:05:31,772 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:05:31,776 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:05:31,820 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-12-23 06:05:31,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 06:05:31,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:05:31,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:05:31,837 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:05:31,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:05:31,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1427287630, now seen corresponding path program 1 times [2020-12-23 06:05:31,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:05:31,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816452591] [2020-12-23 06:05:31,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:05:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:05:32,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:05:32,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816452591] [2020-12-23 06:05:32,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:05:32,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 06:05:32,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28417654] [2020-12-23 06:05:32,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 06:05:32,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:05:32,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 06:05:32,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:05:32,112 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-12-23 06:05:32,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:05:32,137 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-12-23 06:05:32,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 06:05:32,138 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-23 06:05:32,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:05:32,164 INFO L225 Difference]: With dead ends: 31 [2020-12-23 06:05:32,164 INFO L226 Difference]: Without dead ends: 13 [2020-12-23 06:05:32,167 INFO L677 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 [2020-12-23 06:05:32,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-23 06:05:32,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-23 06:05:32,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-23 06:05:32,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-12-23 06:05:32,206 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2020-12-23 06:05:32,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:05:32,207 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-12-23 06:05:32,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 06:05:32,207 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-12-23 06:05:32,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 06:05:32,208 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:05:32,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:05:32,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:05:32,210 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:05:32,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:05:32,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1034260620, now seen corresponding path program 1 times [2020-12-23 06:05:32,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:05:32,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77546852] [2020-12-23 06:05:32,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:05:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:05:32,258 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:05:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:05:32,292 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:05:32,314 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 06:05:32,314 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 06:05:32,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:05:32,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:05:32 BoogieIcfgContainer [2020-12-23 06:05:32,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:05:32,342 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:05:32,342 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:05:32,342 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:05:32,342 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:05:31" (3/4) ... [2020-12-23 06:05:32,346 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 06:05:32,346 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:05:32,348 INFO L168 Benchmark]: Toolchain (without parser) took 1408.10 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 117.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:05:32,349 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:05:32,350 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.63 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 116.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:05:32,351 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.85 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:05:32,352 INFO L168 Benchmark]: Boogie Preprocessor took 25.12 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:05:32,352 INFO L168 Benchmark]: RCFGBuilder took 333.66 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 101.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-23 06:05:32,353 INFO L168 Benchmark]: TraceAbstraction took 732.90 ms. Allocated memory is still 151.0 MB. Free memory was 100.9 MB in the beginning and 117.5 MB in the end (delta: -16.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:05:32,354 INFO L168 Benchmark]: Witness Printer took 4.40 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 117.0 MB in the end (delta: 539.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:05:32,359 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 256.63 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 116.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.85 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.12 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 333.66 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 101.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 732.90 ms. Allocated memory is still 151.0 MB. Free memory was 100.9 MB in the beginning and 117.5 MB in the end (delta: -16.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 4.40 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 117.0 MB in the end (delta: 539.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 42]: 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 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, 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=17occurred in iteration=0, 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 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 Received shutdown request...