/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/float-newlib/double_req_bl_1052d.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:46:09,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:46:09,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:46:09,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 03:46:09,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:46:09,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:46:09,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:46:09,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:46:09,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:46:09,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:46:09,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:46:09,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:46:09,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:46:09,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:46:09,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:46:09,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:46:09,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:46:09,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:46:09,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:46:09,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:46:09,930 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:46:09,960 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:46:09,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:46:09,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:46:09,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:46:09,966 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:46:09,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:46:09,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:46:09,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:46:09,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:46:09,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:46:09,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:46:09,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:46:09,971 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:46:09,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:46:09,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:46:09,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:46:09,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:46:09,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:46:09,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:46:09,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:46:09,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:46:09,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:46:09,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:46:09,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:46:09,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:46:09,975 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:46:10,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:46:10,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:46:10,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:46:10,379 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:46:10,380 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:46:10,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1052d.c [2020-12-22 03:46:10,472 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2fbff3a8/8ee68fc61bd5412fb2ff1ea1752908ff/FLAGbf848435e [2020-12-22 03:46:11,190 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:46:11,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1052d.c [2020-12-22 03:46:11,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2fbff3a8/8ee68fc61bd5412fb2ff1ea1752908ff/FLAGbf848435e [2020-12-22 03:46:11,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2fbff3a8/8ee68fc61bd5412fb2ff1ea1752908ff [2020-12-22 03:46:11,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:46:11,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:46:11,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:11,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:46:11,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:46:11,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:11" (1/1) ... [2020-12-22 03:46:11,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53681c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:11, skipping insertion in model container [2020-12-22 03:46:11,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:11" (1/1) ... [2020-12-22 03:46:11,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:46:11,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:46:11,773 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/float-newlib/double_req_bl_1052d.c[2259,2272] [2020-12-22 03:46:11,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:11,788 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:46:11,840 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/float-newlib/double_req_bl_1052d.c[2259,2272] [2020-12-22 03:46:11,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:11,862 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:46:11,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:11 WrapperNode [2020-12-22 03:46:11,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:11,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:11,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:46:11,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:46:11,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:11" (1/1) ... [2020-12-22 03:46:11,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:11" (1/1) ... [2020-12-22 03:46:11,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:11,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:46:11,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:46:11,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:46:11,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:11" (1/1) ... [2020-12-22 03:46:11,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:11" (1/1) ... [2020-12-22 03:46:11,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:11" (1/1) ... [2020-12-22 03:46:11,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:11" (1/1) ... [2020-12-22 03:46:11,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:11" (1/1) ... [2020-12-22 03:46:11,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:11" (1/1) ... [2020-12-22 03:46:11,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:11" (1/1) ... [2020-12-22 03:46:11,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:46:11,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:46:11,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:46:11,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:46:11,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:11" (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 03:46:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:46:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:46:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-22 03:46:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:46:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:46:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:46:12,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:46:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:46:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:46:12,654 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:46:12,655 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-22 03:46:12,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:12 BoogieIcfgContainer [2020-12-22 03:46:12,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:46:12,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:46:12,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:46:12,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:46:12,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:46:11" (1/3) ... [2020-12-22 03:46:12,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412533ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:12, skipping insertion in model container [2020-12-22 03:46:12,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:11" (2/3) ... [2020-12-22 03:46:12,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412533ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:12, skipping insertion in model container [2020-12-22 03:46:12,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:12" (3/3) ... [2020-12-22 03:46:12,672 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052d.c [2020-12-22 03:46:12,680 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:46:12,690 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:46:12,716 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:46:12,763 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:46:12,764 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:46:12,764 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:46:12,764 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:46:12,764 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:46:12,765 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:46:12,765 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:46:12,765 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:46:12,788 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-12-22 03:46:12,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 03:46:12,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:12,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:12,800 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:12,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:12,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2020-12-22 03:46:12,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:12,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097029929] [2020-12-22 03:46:12,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:13,045 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 03:46:13,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097029929] [2020-12-22 03:46:13,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:13,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:46:13,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273747988] [2020-12-22 03:46:13,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:46:13,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:13,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:46:13,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:13,087 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-12-22 03:46:13,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:13,121 INFO L93 Difference]: Finished difference Result 74 states and 118 transitions. [2020-12-22 03:46:13,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:46:13,125 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-22 03:46:13,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:13,137 INFO L225 Difference]: With dead ends: 74 [2020-12-22 03:46:13,137 INFO L226 Difference]: Without dead ends: 35 [2020-12-22 03:46:13,140 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 03:46:13,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-22 03:46:13,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-22 03:46:13,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 03:46:13,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2020-12-22 03:46:13,186 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2020-12-22 03:46:13,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:13,187 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2020-12-22 03:46:13,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:46:13,187 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2020-12-22 03:46:13,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 03:46:13,188 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:13,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:13,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:46:13,189 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:13,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:13,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2020-12-22 03:46:13,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:13,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455185162] [2020-12-22 03:46:13,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:13,259 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:13,311 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:13,339 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:46:13,339 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:46:13,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:46:13,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:46:13 BoogieIcfgContainer [2020-12-22 03:46:13,378 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:46:13,379 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:46:13,379 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:46:13,379 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:46:13,380 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:12" (3/4) ... [2020-12-22 03:46:13,384 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:46:13,384 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:46:13,387 INFO L168 Benchmark]: Toolchain (without parser) took 1881.05 ms. Allocated memory is still 154.1 MB. Free memory was 129.2 MB in the beginning and 103.5 MB in the end (delta: 25.7 MB). Peak memory consumption was 24.9 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:13,388 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 154.1 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:13,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.83 ms. Allocated memory is still 154.1 MB. Free memory was 129.0 MB in the beginning and 117.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:13,390 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.09 ms. Allocated memory is still 154.1 MB. Free memory was 117.7 MB in the beginning and 115.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:13,390 INFO L168 Benchmark]: Boogie Preprocessor took 56.71 ms. Allocated memory is still 154.1 MB. Free memory was 115.9 MB in the beginning and 114.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:13,391 INFO L168 Benchmark]: RCFGBuilder took 681.15 ms. Allocated memory is still 154.1 MB. Free memory was 114.3 MB in the beginning and 127.0 MB in the end (delta: -12.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:13,392 INFO L168 Benchmark]: TraceAbstraction took 717.75 ms. Allocated memory is still 154.1 MB. Free memory was 126.6 MB in the beginning and 104.0 MB in the end (delta: 22.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:13,393 INFO L168 Benchmark]: Witness Printer took 5.57 ms. Allocated memory is still 154.1 MB. Free memory is still 103.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:13,397 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 154.1 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 356.83 ms. Allocated memory is still 154.1 MB. Free memory was 129.0 MB in the beginning and 117.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 54.09 ms. Allocated memory is still 154.1 MB. Free memory was 117.7 MB in the beginning and 115.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.71 ms. Allocated memory is still 154.1 MB. Free memory was 115.9 MB in the beginning and 114.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 681.15 ms. Allocated memory is still 154.1 MB. Free memory was 114.3 MB in the beginning and 127.0 MB in the end (delta: -12.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 717.75 ms. Allocated memory is still 154.1 MB. Free memory was 126.6 MB in the beginning and 104.0 MB in the end (delta: 22.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * Witness Printer took 5.57 ms. Allocated memory is still 154.1 MB. Free memory is still 103.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 105]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftRight at line 39, overapproximation of bitwiseOr at line 40, overapproximation of bitwiseAnd at line 27, overapproximation of someBinaryDOUBLEComparisonOperation at line 104. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L100] double x = 0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L29] COND FALSE !(j0 < 0) [L39] i = (0x000fffff) >> j0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L40] COND TRUE ((i0 & i) | i1) == 0 [L41] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L101] double res = floor_double(x); [L104] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L104] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L105] reach_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 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: 53 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=38occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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...