/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/floats-cdfpl/newton_3_4.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 15:59:56,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 15:59:56,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 15:59:56,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 15:59:56,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 15:59:56,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 15:59:56,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 15:59:56,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 15:59:56,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 15:59:56,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 15:59:56,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 15:59:56,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 15:59:56,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 15:59:56,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 15:59:56,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 15:59:56,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 15:59:56,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 15:59:56,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 15:59:56,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 15:59:56,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 15:59:56,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 15:59:56,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 15:59:56,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 15:59:56,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 15:59:56,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 15:59:56,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 15:59:56,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 15:59:56,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 15:59:56,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 15:59:56,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 15:59:56,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 15:59:56,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 15:59:56,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 15:59:56,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 15:59:56,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 15:59:56,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 15:59:56,203 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 15:59:56,228 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 15:59:56,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 15:59:56,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 15:59:56,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 15:59:56,230 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 15:59:56,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 15:59:56,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 15:59:56,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 15:59:56,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 15:59:56,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 15:59:56,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 15:59:56,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 15:59:56,232 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 15:59:56,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 15:59:56,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 15:59:56,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 15:59:56,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 15:59:56,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 15:59:56,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 15:59:56,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 15:59:56,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 15:59:56,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 15:59:56,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 15:59:56,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 15:59:56,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 15:59:56,234 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 15:59:56,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 15:59:56,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 15:59:56,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 15:59:56,617 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 15:59:56,618 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 15:59:56,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_4.i [2021-01-06 15:59:56,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c2bfdcda4/b30bd32425e944278fb4356338d5c6e2/FLAG814588547 [2021-01-06 15:59:57,386 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 15:59:57,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_4.i [2021-01-06 15:59:57,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c2bfdcda4/b30bd32425e944278fb4356338d5c6e2/FLAG814588547 [2021-01-06 15:59:57,708 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c2bfdcda4/b30bd32425e944278fb4356338d5c6e2 [2021-01-06 15:59:57,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 15:59:57,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 15:59:57,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 15:59:57,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 15:59:57,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 15:59:57,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 03:59:57" (1/1) ... [2021-01-06 15:59:57,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d8a96f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:57, skipping insertion in model container [2021-01-06 15:59:57,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 03:59:57" (1/1) ... [2021-01-06 15:59:57,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 15:59:57,763 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-06 15:59:57,986 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_4.i[1266,1279] [2021-01-06 15:59:57,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 15:59:58,000 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-06 15:59:58,023 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_4.i[1266,1279] [2021-01-06 15:59:58,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 15:59:58,042 INFO L208 MainTranslator]: Completed translation [2021-01-06 15:59:58,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:58 WrapperNode [2021-01-06 15:59:58,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 15:59:58,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 15:59:58,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 15:59:58,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 15:59:58,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:58" (1/1) ... [2021-01-06 15:59:58,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:58" (1/1) ... [2021-01-06 15:59:58,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 15:59:58,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 15:59:58,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 15:59:58,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 15:59:58,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:58" (1/1) ... [2021-01-06 15:59:58,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:58" (1/1) ... [2021-01-06 15:59:58,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:58" (1/1) ... [2021-01-06 15:59:58,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:58" (1/1) ... [2021-01-06 15:59:58,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:58" (1/1) ... [2021-01-06 15:59:58,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:58" (1/1) ... [2021-01-06 15:59:58,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:58" (1/1) ... [2021-01-06 15:59:58,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 15:59:58,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 15:59:58,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 15:59:58,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 15:59:58,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:58" (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 15:59:58,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 15:59:58,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 15:59:58,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 15:59:58,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 15:59:58,643 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 15:59:58,644 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-01-06 15:59:58,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 03:59:58 BoogieIcfgContainer [2021-01-06 15:59:58,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 15:59:58,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 15:59:58,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 15:59:58,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 15:59:58,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 03:59:57" (1/3) ... [2021-01-06 15:59:58,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102c5ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 03:59:58, skipping insertion in model container [2021-01-06 15:59:58,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 03:59:58" (2/3) ... [2021-01-06 15:59:58,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102c5ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 03:59:58, skipping insertion in model container [2021-01-06 15:59:58,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 03:59:58" (3/3) ... [2021-01-06 15:59:58,679 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_4.i [2021-01-06 15:59:58,697 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 15:59:58,712 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 15:59:58,746 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 15:59:58,808 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 15:59:58,808 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 15:59:58,809 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 15:59:58,809 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 15:59:58,809 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 15:59:58,809 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 15:59:58,809 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 15:59:58,809 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 15:59:58,831 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2021-01-06 15:59:58,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 15:59:58,847 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 15:59:58,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 15:59:58,848 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 15:59:58,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 15:59:58,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1427287630, now seen corresponding path program 1 times [2021-01-06 15:59:58,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 15:59:58,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215191841] [2021-01-06 15:59:58,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 15:59:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 15:59:59,031 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 15:59:59,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215191841] [2021-01-06 15:59:59,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 15:59:59,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 15:59:59,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27116724] [2021-01-06 15:59:59,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 15:59:59,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 15:59:59,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 15:59:59,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 15:59:59,060 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2021-01-06 15:59:59,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 15:59:59,079 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-01-06 15:59:59,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 15:59:59,081 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2021-01-06 15:59:59,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 15:59:59,091 INFO L225 Difference]: With dead ends: 31 [2021-01-06 15:59:59,091 INFO L226 Difference]: Without dead ends: 13 [2021-01-06 15:59:59,094 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 15:59:59,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-01-06 15:59:59,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-01-06 15:59:59,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-01-06 15:59:59,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-01-06 15:59:59,133 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2021-01-06 15:59:59,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 15:59:59,134 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-01-06 15:59:59,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 15:59:59,134 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-01-06 15:59:59,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 15:59:59,135 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 15:59:59,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 15:59:59,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 15:59:59,136 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 15:59:59,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 15:59:59,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1034260620, now seen corresponding path program 1 times [2021-01-06 15:59:59,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 15:59:59,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158096848] [2021-01-06 15:59:59,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 15:59:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 15:59:59,163 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 15:59:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 15:59:59,183 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 15:59:59,208 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 15:59:59,208 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 15:59:59,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 15:59:59,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 03:59:59 BoogieIcfgContainer [2021-01-06 15:59:59,240 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 15:59:59,240 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 15:59:59,241 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 15:59:59,241 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 15:59:59,241 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 03:59:58" (3/4) ... [2021-01-06 15:59:59,246 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 15:59:59,246 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 15:59:59,249 INFO L168 Benchmark]: Toolchain (without parser) took 1532.87 ms. Allocated memory is still 155.2 MB. Free memory was 129.7 MB in the beginning and 119.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-01-06 15:59:59,250 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 15:59:59,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.86 ms. Allocated memory is still 155.2 MB. Free memory was 129.5 MB in the beginning and 119.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 15:59:59,252 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.09 ms. Allocated memory is still 155.2 MB. Free memory was 119.2 MB in the beginning and 117.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 15:59:59,253 INFO L168 Benchmark]: Boogie Preprocessor took 55.65 ms. Allocated memory is still 155.2 MB. Free memory was 117.6 MB in the beginning and 116.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 15:59:59,254 INFO L168 Benchmark]: RCFGBuilder took 476.38 ms. Allocated memory is still 155.2 MB. Free memory was 116.3 MB in the beginning and 104.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-01-06 15:59:59,255 INFO L168 Benchmark]: TraceAbstraction took 584.25 ms. Allocated memory is still 155.2 MB. Free memory was 103.9 MB in the beginning and 119.5 MB in the end (delta: -15.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 15:59:59,256 INFO L168 Benchmark]: Witness Printer took 5.65 ms. Allocated memory is still 155.2 MB. Free memory was 119.5 MB in the beginning and 119.2 MB in the end (delta: 317.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 15:59:59,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 322.86 ms. Allocated memory is still 155.2 MB. Free memory was 129.5 MB in the beginning and 119.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 64.09 ms. Allocated memory is still 155.2 MB. Free memory was 119.2 MB in the beginning and 117.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.65 ms. Allocated memory is still 155.2 MB. Free memory was 117.6 MB in the beginning and 116.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 476.38 ms. Allocated memory is still 155.2 MB. Free memory was 116.3 MB in the beginning and 104.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 584.25 ms. Allocated memory is still 155.2 MB. Free memory was 103.9 MB in the beginning and 119.5 MB in the end (delta: -15.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 5.65 ms. Allocated memory is still 155.2 MB. Free memory was 119.5 MB in the beginning and 119.2 MB in the end (delta: 317.0 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 37. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...