/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_2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 15:59:45,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 15:59:45,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 15:59:45,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 15:59:45,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 15:59:45,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 15:59:45,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 15:59:45,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 15:59:45,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 15:59:45,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 15:59:45,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 15:59:45,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 15:59:45,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 15:59:45,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 15:59:45,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 15:59:45,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 15:59:45,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 15:59:45,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 15:59:45,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 15:59:45,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 15:59:45,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 15:59:45,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 15:59:45,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 15:59:45,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 15:59:45,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 15:59:45,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 15:59:45,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 15:59:45,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 15:59:45,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 15:59:45,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 15:59:45,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 15:59:45,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 15:59:45,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 15:59:45,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 15:59:45,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 15:59:45,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 15:59:45,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 15:59:45,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 15:59:45,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 15:59:45,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 15:59:45,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 15:59:45,444 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 15:59:45,496 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 15:59:45,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 15:59:45,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 15:59:45,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 15:59:45,503 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 15:59:45,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 15:59:45,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 15:59:45,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 15:59:45,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 15:59:45,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 15:59:45,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 15:59:45,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 15:59:45,506 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 15:59:45,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 15:59:45,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 15:59:45,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 15:59:45,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 15:59:45,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 15:59:45,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 15:59:45,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 15:59:45,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 15:59:45,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 15:59:45,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 15:59:45,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 15:59:45,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 15:59:45,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 15:59:45,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 15:59:45,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 15:59:45,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 15:59:45,999 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 15:59:45,999 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 15:59:46,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_2.i [2021-01-06 15:59:46,093 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c118073cd/35eb8ba559094152a6344dc7706875f8/FLAGdd9c667da [2021-01-06 15:59:46,731 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 15:59:46,732 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_2.i [2021-01-06 15:59:46,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c118073cd/35eb8ba559094152a6344dc7706875f8/FLAGdd9c667da [2021-01-06 15:59:47,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c118073cd/35eb8ba559094152a6344dc7706875f8 [2021-01-06 15:59:47,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 15:59:47,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 15:59:47,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 15:59:47,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 15:59:47,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 15:59:47,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 03:59:47" (1/1) ... [2021-01-06 15:59:47,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9cc9e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:47, skipping insertion in model container [2021-01-06 15:59:47,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 03:59:47" (1/1) ... [2021-01-06 15:59:47,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 15:59:47,141 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-06 15:59:47,392 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_2_2.i[1245,1258] [2021-01-06 15:59:47,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 15:59:47,411 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-06 15:59:47,452 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_2_2.i[1245,1258] [2021-01-06 15:59:47,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 15:59:47,484 INFO L208 MainTranslator]: Completed translation [2021-01-06 15:59:47,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:47 WrapperNode [2021-01-06 15:59:47,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 15:59:47,487 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 15:59:47,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 15:59:47,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 15:59:47,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:47" (1/1) ... [2021-01-06 15:59:47,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:47" (1/1) ... [2021-01-06 15:59:47,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 15:59:47,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 15:59:47,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 15:59:47,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 15:59:47,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:47" (1/1) ... [2021-01-06 15:59:47,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:47" (1/1) ... [2021-01-06 15:59:47,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:47" (1/1) ... [2021-01-06 15:59:47,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:47" (1/1) ... [2021-01-06 15:59:47,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:47" (1/1) ... [2021-01-06 15:59:47,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:47" (1/1) ... [2021-01-06 15:59:47,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:47" (1/1) ... [2021-01-06 15:59:47,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 15:59:47,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 15:59:47,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 15:59:47,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 15:59:47,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:47" (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 [2021-01-06 15:59:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 15:59:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 15:59:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 15:59:47,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 15:59:48,073 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 15:59:48,078 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-01-06 15:59:48,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 03:59:48 BoogieIcfgContainer [2021-01-06 15:59:48,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 15:59:48,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 15:59:48,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 15:59:48,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 15:59:48,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 03:59:47" (1/3) ... [2021-01-06 15:59:48,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ba92b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 03:59:48, skipping insertion in model container [2021-01-06 15:59:48,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:47" (2/3) ... [2021-01-06 15:59:48,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ba92b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 03:59:48, skipping insertion in model container [2021-01-06 15:59:48,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 03:59:48" (3/3) ... [2021-01-06 15:59:48,109 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_2.i [2021-01-06 15:59:48,127 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 15:59:48,137 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 15:59:48,185 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 15:59:48,253 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 15:59:48,254 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 15:59:48,254 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 15:59:48,254 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 15:59:48,254 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 15:59:48,255 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 15:59:48,255 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 15:59:48,255 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 15:59:48,271 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2021-01-06 15:59:48,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 15:59:48,276 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 15:59:48,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 15:59:48,277 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 15:59:48,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 15:59:48,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1267787092, now seen corresponding path program 1 times [2021-01-06 15:59:48,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 15:59:48,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127549620] [2021-01-06 15:59:48,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 15:59:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 15:59:48,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 15:59:48,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127549620] [2021-01-06 15:59:48,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 15:59:48,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 15:59:48,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471598734] [2021-01-06 15:59:48,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 15:59:48,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 15:59:48,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 15:59:48,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 15:59:48,472 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2021-01-06 15:59:48,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 15:59:48,491 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-01-06 15:59:48,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 15:59:48,493 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 15:59:48,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 15:59:48,502 INFO L225 Difference]: With dead ends: 27 [2021-01-06 15:59:48,503 INFO L226 Difference]: Without dead ends: 11 [2021-01-06 15:59:48,506 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 [2021-01-06 15:59:48,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-01-06 15:59:48,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-01-06 15:59:48,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-01-06 15:59:48,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-01-06 15:59:48,544 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 10 [2021-01-06 15:59:48,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 15:59:48,544 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-01-06 15:59:48,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 15:59:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-01-06 15:59:48,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 15:59:48,545 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 15:59:48,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 15:59:48,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 15:59:48,546 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 15:59:48,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 15:59:48,547 INFO L82 PathProgramCache]: Analyzing trace with hash -2077133718, now seen corresponding path program 1 times [2021-01-06 15:59:48,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 15:59:48,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818522870] [2021-01-06 15:59:48,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 15:59:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 15:59:48,572 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 15:59:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 15:59:48,599 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 15:59:48,637 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 15:59:48,637 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 15:59:48,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 15:59:48,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 03:59:48 BoogieIcfgContainer [2021-01-06 15:59:48,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 15:59:48,670 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 15:59:48,670 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 15:59:48,671 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 15:59:48,671 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 03:59:48" (3/4) ... [2021-01-06 15:59:48,675 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 15:59:48,675 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 15:59:48,678 INFO L168 Benchmark]: Toolchain (without parser) took 1573.27 ms. Allocated memory is still 155.2 MB. Free memory was 131.6 MB in the beginning and 119.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 8.0 GB. [2021-01-06 15:59:48,679 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 155.2 MB. Free memory is still 130.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 15:59:48,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.92 ms. Allocated memory is still 155.2 MB. Free memory was 131.4 MB in the beginning and 121.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 15:59:48,681 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.68 ms. Allocated memory is still 155.2 MB. Free memory was 121.1 MB in the beginning and 119.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 15:59:48,682 INFO L168 Benchmark]: Boogie Preprocessor took 53.60 ms. Allocated memory is still 155.2 MB. Free memory was 119.6 MB in the beginning and 118.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 15:59:48,683 INFO L168 Benchmark]: RCFGBuilder took 477.09 ms. Allocated memory is still 155.2 MB. Free memory was 118.5 MB in the beginning and 107.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-01-06 15:59:48,684 INFO L168 Benchmark]: TraceAbstraction took 585.67 ms. Allocated memory is still 155.2 MB. Free memory was 106.6 MB in the beginning and 120.0 MB in the end (delta: -13.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 15:59:48,684 INFO L168 Benchmark]: Witness Printer took 5.21 ms. Allocated memory is still 155.2 MB. Free memory is still 119.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 15:59:48,689 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 155.2 MB. Free memory is still 130.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 380.92 ms. Allocated memory is still 155.2 MB. Free memory was 131.4 MB in the beginning and 121.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 60.68 ms. Allocated memory is still 155.2 MB. Free memory was 121.1 MB in the beginning and 119.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.60 ms. Allocated memory is still 155.2 MB. Free memory was 119.6 MB in the beginning and 118.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 477.09 ms. Allocated memory is still 155.2 MB. Free memory was 118.5 MB in the beginning and 107.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 585.67 ms. Allocated memory is still 155.2 MB. Free memory was 106.6 MB in the beginning and 120.0 MB in the end (delta: -13.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 5.21 ms. Allocated memory is still 155.2 MB. Free memory is still 119.4 MB. There was no memory consumed. 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: 0.3s, 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...