/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_1_8.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:40:09,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:40:09,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:40:09,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 03:40:09,734 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:40:09,769 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:40:09,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:40:09,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:40:09,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:40:09,775 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:40:09,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:40:09,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:40:09,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:40:09,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:40:09,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:40:09,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:40:09,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:40:09,778 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:40:09,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:40:09,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:40:09,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:40:09,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:40:09,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:40:09,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:40:09,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:40:09,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:40:09,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:40:09,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:40:09,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:40:09,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:40:09,781 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:40:10,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:40:10,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:40:10,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:40:10,233 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:40:10,234 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:40:10,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2020-12-22 03:40:10,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409dd58a3/3dfea3e1dcf84f189b0df05e51cb91ec/FLAG8a765df12 [2020-12-22 03:40:10,979 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:40:10,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2020-12-22 03:40:10,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409dd58a3/3dfea3e1dcf84f189b0df05e51cb91ec/FLAG8a765df12 [2020-12-22 03:40:11,337 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409dd58a3/3dfea3e1dcf84f189b0df05e51cb91ec [2020-12-22 03:40:11,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:40:11,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:40:11,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:40:11,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:40:11,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:40:11,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:40:11" (1/1) ... [2020-12-22 03:40:11,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ba81950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:11, skipping insertion in model container [2020-12-22 03:40:11,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:40:11" (1/1) ... [2020-12-22 03:40:11,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:40:11,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:40:11,560 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_1_8.i[1224,1237] [2020-12-22 03:40:11,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:40:11,575 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:40:11,598 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_1_8.i[1224,1237] [2020-12-22 03:40:11,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:40:11,617 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:40:11,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:11 WrapperNode [2020-12-22 03:40:11,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:40:11,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:40:11,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:40:11,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:40:11,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:11" (1/1) ... [2020-12-22 03:40:11,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:11" (1/1) ... [2020-12-22 03:40:11,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:40:11,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:40:11,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:40:11,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:40:11,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:11" (1/1) ... [2020-12-22 03:40:11,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:11" (1/1) ... [2020-12-22 03:40:11,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:11" (1/1) ... [2020-12-22 03:40:11,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:11" (1/1) ... [2020-12-22 03:40:11,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:11" (1/1) ... [2020-12-22 03:40:11,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:11" (1/1) ... [2020-12-22 03:40:11,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:11" (1/1) ... [2020-12-22 03:40:11,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:40:11,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:40:11,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:40:11,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:40:11,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:11" (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 03:40:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:40:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:40:11,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:40:11,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:40:12,200 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:40:12,201 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-22 03:40:12,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:40:12 BoogieIcfgContainer [2020-12-22 03:40:12,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:40:12,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:40:12,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:40:12,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:40:12,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:40:11" (1/3) ... [2020-12-22 03:40:12,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c40706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:40:12, skipping insertion in model container [2020-12-22 03:40:12,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:40:11" (2/3) ... [2020-12-22 03:40:12,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c40706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:40:12, skipping insertion in model container [2020-12-22 03:40:12,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:40:12" (3/3) ... [2020-12-22 03:40:12,223 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_8.i [2020-12-22 03:40:12,244 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:40:12,255 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:40:12,302 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:40:12,337 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:40:12,337 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:40:12,337 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:40:12,338 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:40:12,338 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:40:12,338 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:40:12,338 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:40:12,339 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:40:12,355 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-22 03:40:12,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 03:40:12,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:40:12,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:40:12,364 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:40:12,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:40:12,372 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2020-12-22 03:40:12,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:40:12,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783849816] [2020-12-22 03:40:12,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:40:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:40:12,646 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 03:40:12,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783849816] [2020-12-22 03:40:12,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:40:12,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:40:12,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983588736] [2020-12-22 03:40:12,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:40:12,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:40:12,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:40:12,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:40:12,675 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-12-22 03:40:12,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:40:12,695 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-12-22 03:40:12,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:40:12,696 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 03:40:12,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:40:12,708 INFO L225 Difference]: With dead ends: 23 [2020-12-22 03:40:12,708 INFO L226 Difference]: Without dead ends: 9 [2020-12-22 03:40:12,711 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 03:40:12,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-22 03:40:12,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-22 03:40:12,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-22 03:40:12,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2020-12-22 03:40:12,753 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2020-12-22 03:40:12,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:40:12,753 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2020-12-22 03:40:12,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:40:12,754 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-12-22 03:40:12,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 03:40:12,754 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:40:12,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:40:12,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:40:12,755 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:40:12,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:40:12,757 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2020-12-22 03:40:12,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:40:12,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64780994] [2020-12-22 03:40:12,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:40:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:40:12,780 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:40:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:40:12,797 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:40:12,845 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:40:12,845 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:40:12,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:40:12,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:40:12 BoogieIcfgContainer [2020-12-22 03:40:12,881 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:40:12,883 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:40:12,883 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:40:12,883 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:40:12,884 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:40:12" (3/4) ... [2020-12-22 03:40:12,888 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:40:12,888 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:40:12,892 INFO L168 Benchmark]: Toolchain (without parser) took 1545.15 ms. Allocated memory is still 151.0 MB. Free memory was 127.4 MB in the beginning and 118.7 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.2 MB. Max. memory is 8.0 GB. [2020-12-22 03:40:12,894 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 128.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:40:12,896 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.35 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 116.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:40:12,898 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.11 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:40:12,899 INFO L168 Benchmark]: Boogie Preprocessor took 26.08 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 114.1 MB in the end (delta: 943.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:40:12,900 INFO L168 Benchmark]: RCFGBuilder took 513.69 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 102.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:40:12,902 INFO L168 Benchmark]: TraceAbstraction took 671.89 ms. Allocated memory is still 151.0 MB. Free memory was 102.4 MB in the beginning and 119.1 MB in the end (delta: -16.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:40:12,903 INFO L168 Benchmark]: Witness Printer took 5.36 ms. Allocated memory is still 151.0 MB. Free memory was 119.1 MB in the beginning and 118.7 MB in the end (delta: 457.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:40:12,919 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 151.0 MB. Free memory is still 128.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 272.35 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 116.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.11 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.08 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 114.1 MB in the end (delta: 943.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 513.69 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 102.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 671.89 ms. Allocated memory is still 151.0 MB. Free memory was 102.4 MB in the beginning and 119.1 MB in the end (delta: -16.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 5.36 ms. Allocated memory is still 151.0 MB. Free memory was 119.1 MB in the beginning and 118.7 MB in the end (delta: 457.9 kB). 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 33. 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); [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 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: 12 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=13occurred 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, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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...