/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_2_5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:40:17,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:40:17,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:40:17,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:40:17,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:40:17,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:40:17,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:40:17,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:40:17,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:40:17,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:40:17,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:40:17,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:40:17,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:40:17,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:40:17,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:40:17,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:40:17,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:40:17,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:40:17,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:40:17,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:40:17,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:40:17,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:40:17,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:40:17,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:40:17,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:40:17,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:40:17,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:40:17,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:40:17,582 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:40:17,635 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:40:17,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:40:17,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:40:17,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:40:17,641 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:40:17,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:40:17,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:40:17,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:40:17,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:40:17,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:40:17,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:40:17,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:40:17,643 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:40:17,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:40:17,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:40:17,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:40:17,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:40:17,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:40:17,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:40:17,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:40:17,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:40:17,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:40:17,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:40:17,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:40:17,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:40:17,646 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:40:18,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:40:18,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:40:18,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:40:18,140 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:40:18,141 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:40:18,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_5.i [2020-12-22 03:40:18,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc85d53b2/05961144ebb842558b81692d5b872a13/FLAGc19ee27f9 [2020-12-22 03:40:18,917 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:40:18,917 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i [2020-12-22 03:40:18,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc85d53b2/05961144ebb842558b81692d5b872a13/FLAGc19ee27f9 [2020-12-22 03:40:19,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc85d53b2/05961144ebb842558b81692d5b872a13 [2020-12-22 03:40:19,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:40:19,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:40:19,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:40:19,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:40:19,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:40:19,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:40:19" (1/1) ... [2020-12-22 03:40:19,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c7949e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:19, skipping insertion in model container [2020-12-22 03:40:19,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:40:19" (1/1) ... [2020-12-22 03:40:19,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:40:19,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:40:19,481 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i[1245,1258] [2020-12-22 03:40:19,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:40:19,502 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:40:19,542 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i[1245,1258] [2020-12-22 03:40:19,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:40:19,573 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:40:19,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:19 WrapperNode [2020-12-22 03:40:19,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:40:19,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:40:19,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:40:19,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:40:19,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:19" (1/1) ... [2020-12-22 03:40:19,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:19" (1/1) ... [2020-12-22 03:40:19,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:40:19,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:40:19,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:40:19,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:40:19,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:19" (1/1) ... [2020-12-22 03:40:19,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:19" (1/1) ... [2020-12-22 03:40:19,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:19" (1/1) ... [2020-12-22 03:40:19,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:19" (1/1) ... [2020-12-22 03:40:19,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:19" (1/1) ... [2020-12-22 03:40:19,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:19" (1/1) ... [2020-12-22 03:40:19,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:19" (1/1) ... [2020-12-22 03:40:19,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:40:19,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:40:19,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:40:19,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:40:19,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 03:40:19,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:40:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:40:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:40:19,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:40:20,156 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:40:20,156 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-22 03:40:20,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:40:20 BoogieIcfgContainer [2020-12-22 03:40:20,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:40:20,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:40:20,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:40:20,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:40:20,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:40:19" (1/3) ... [2020-12-22 03:40:20,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1561d5df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:40:20, skipping insertion in model container [2020-12-22 03:40:20,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:19" (2/3) ... [2020-12-22 03:40:20,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1561d5df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:40:20, skipping insertion in model container [2020-12-22 03:40:20,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:40:20" (3/3) ... [2020-12-22 03:40:20,176 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_5.i [2020-12-22 03:40:20,192 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:40:20,203 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:40:20,256 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:40:20,317 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:40:20,318 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:40:20,318 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:40:20,318 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:40:20,318 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:40:20,319 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:40:20,319 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:40:20,319 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:40:20,335 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-12-22 03:40:20,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 03:40:20,341 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:40:20,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:40:20,342 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:40:20,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:40:20,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1267787092, now seen corresponding path program 1 times [2020-12-22 03:40:20,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:40:20,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846425464] [2020-12-22 03:40:20,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:40:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:40:20,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:40:20,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846425464] [2020-12-22 03:40:20,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:40:20,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:40:20,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850046248] [2020-12-22 03:40:20,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:40:20,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:40:20,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:40:20,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:40:20,547 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-12-22 03:40:20,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:40:20,566 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-12-22 03:40:20,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:40:20,567 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-22 03:40:20,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:40:20,577 INFO L225 Difference]: With dead ends: 27 [2020-12-22 03:40:20,577 INFO L226 Difference]: Without dead ends: 11 [2020-12-22 03:40:20,580 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 [2020-12-22 03:40:20,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-22 03:40:20,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-22 03:40:20,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-22 03:40:20,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-12-22 03:40:20,618 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 10 [2020-12-22 03:40:20,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:40:20,618 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-12-22 03:40:20,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:40:20,619 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-12-22 03:40:20,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 03:40:20,619 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:40:20,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:40:20,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:40:20,620 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:40:20,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:40:20,621 INFO L82 PathProgramCache]: Analyzing trace with hash -2077133718, now seen corresponding path program 1 times [2020-12-22 03:40:20,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:40:20,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246869949] [2020-12-22 03:40:20,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:40:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:40:20,646 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:40:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:40:20,684 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:40:20,725 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:40:20,726 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:40:20,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:40:20,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:40:20 BoogieIcfgContainer [2020-12-22 03:40:20,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:40:20,772 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:40:20,773 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:40:20,773 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:40:20,774 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:40:20" (3/4) ... [2020-12-22 03:40:20,778 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:40:20,778 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:40:20,784 INFO L168 Benchmark]: Toolchain (without parser) took 1519.07 ms. Allocated memory is still 156.2 MB. Free memory was 131.1 MB in the beginning and 85.4 MB in the end (delta: 45.7 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:40:20,785 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory is still 130.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:40:20,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.74 ms. Allocated memory is still 156.2 MB. Free memory was 131.1 MB in the beginning and 120.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:40:20,790 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.85 ms. Allocated memory is still 156.2 MB. Free memory was 120.6 MB in the beginning and 119.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:40:20,791 INFO L168 Benchmark]: Boogie Preprocessor took 62.14 ms. Allocated memory is still 156.2 MB. Free memory was 119.4 MB in the beginning and 117.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:40:20,793 INFO L168 Benchmark]: RCFGBuilder took 451.74 ms. Allocated memory is still 156.2 MB. Free memory was 117.9 MB in the beginning and 106.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:40:20,794 INFO L168 Benchmark]: TraceAbstraction took 610.85 ms. Allocated memory is still 156.2 MB. Free memory was 105.9 MB in the beginning and 86.0 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-12-22 03:40:20,797 INFO L168 Benchmark]: Witness Printer took 5.88 ms. Allocated memory is still 156.2 MB. Free memory was 85.9 MB in the beginning and 85.4 MB in the end (delta: 470.4 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:40:20,814 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory is still 130.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 312.74 ms. Allocated memory is still 156.2 MB. Free memory was 131.1 MB in the beginning and 120.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 64.85 ms. Allocated memory is still 156.2 MB. Free memory was 120.6 MB in the beginning and 119.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.14 ms. Allocated memory is still 156.2 MB. Free memory was 119.4 MB in the beginning and 117.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 451.74 ms. Allocated memory is still 156.2 MB. Free memory was 117.9 MB in the beginning and 106.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 610.85 ms. Allocated memory is still 156.2 MB. Free memory was 105.9 MB in the beginning and 86.0 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Witness Printer took 5.88 ms. Allocated memory is still 156.2 MB. Free memory was 85.9 MB in the beginning and 85.4 MB in the end (delta: 470.4 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 35. 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) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 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=15occurred 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, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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...