/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_0970b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:45:56,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:45:56,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:45:56,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:45:56,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:45:56,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:45:56,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:45:56,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:45:56,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:45:56,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:45:56,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:45:56,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:45:56,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:45:56,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:45:56,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:45:56,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:45:56,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:45:56,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:45:56,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:45:56,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:45:56,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:45:56,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:45:56,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:45:56,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:45:56,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:45:56,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:45:56,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:45:56,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:45:56,833 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:45:56,887 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:45:56,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:45:56,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:45:56,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:45:56,890 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:45:56,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:45:56,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:45:56,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:45:56,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:45:56,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:45:56,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:45:56,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:45:56,894 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:45:56,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:45:56,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:45:56,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:45:56,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:45:56,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:45:56,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:45:56,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:45:56,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:45:56,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:45:56,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:45:56,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:45:56,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:45:56,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:45:57,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:45:57,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:45:57,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:45:57,411 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:45:57,411 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:45:57,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0970b.c [2020-12-22 03:45:57,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/961e5f0a7/035795c7f03a4fe0a094be3a899b8dd7/FLAG2d5de67df [2020-12-22 03:45:58,189 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:45:58,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0970b.c [2020-12-22 03:45:58,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/961e5f0a7/035795c7f03a4fe0a094be3a899b8dd7/FLAG2d5de67df [2020-12-22 03:45:58,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/961e5f0a7/035795c7f03a4fe0a094be3a899b8dd7 [2020-12-22 03:45:58,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:45:58,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:45:58,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:45:58,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:45:58,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:45:58,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:45:58" (1/1) ... [2020-12-22 03:45:58,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1131e200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:58, skipping insertion in model container [2020-12-22 03:45:58,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:45:58" (1/1) ... [2020-12-22 03:45:58,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:45:58,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:45:58,849 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_0970b.c[4615,4628] [2020-12-22 03:45:58,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:45:58,865 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:45:58,917 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_0970b.c[4615,4628] [2020-12-22 03:45:58,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:45:58,938 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:45:58,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:58 WrapperNode [2020-12-22 03:45:58,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:45:58,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:45:58,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:45:58,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:45:58,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:58" (1/1) ... [2020-12-22 03:45:58,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:58" (1/1) ... [2020-12-22 03:45:58,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:45:58,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:45:58,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:45:58,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:45:59,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:58" (1/1) ... [2020-12-22 03:45:59,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:58" (1/1) ... [2020-12-22 03:45:59,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:58" (1/1) ... [2020-12-22 03:45:59,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:58" (1/1) ... [2020-12-22 03:45:59,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:58" (1/1) ... [2020-12-22 03:45:59,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:58" (1/1) ... [2020-12-22 03:45:59,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:58" (1/1) ... [2020-12-22 03:45:59,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:45:59,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:45:59,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:45:59,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:45:59,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:58" (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 03:45:59,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:45:59,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:45:59,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-22 03:45:59,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:45:59,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:45:59,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:45:59,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:45:59,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:45:59,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:45:59,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:45:59,785 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-22 03:45:59,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:45:59 BoogieIcfgContainer [2020-12-22 03:45:59,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:45:59,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:45:59,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:45:59,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:45:59,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:45:58" (1/3) ... [2020-12-22 03:45:59,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce97059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:45:59, skipping insertion in model container [2020-12-22 03:45:59,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:45:58" (2/3) ... [2020-12-22 03:45:59,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce97059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:45:59, skipping insertion in model container [2020-12-22 03:45:59,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:45:59" (3/3) ... [2020-12-22 03:45:59,808 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0970b.c [2020-12-22 03:45:59,821 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:45:59,827 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:45:59,852 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:45:59,899 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:45:59,899 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:45:59,899 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:45:59,900 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:45:59,900 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:45:59,900 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:45:59,900 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:45:59,900 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:45:59,923 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-12-22 03:45:59,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 03:45:59,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:45:59,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:45:59,931 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:45:59,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:45:59,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1032073611, now seen corresponding path program 1 times [2020-12-22 03:45:59,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:45:59,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158481078] [2020-12-22 03:45:59,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:00,207 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 03:46:00,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158481078] [2020-12-22 03:46:00,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:00,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:46:00,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842361648] [2020-12-22 03:46:00,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:46:00,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:00,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:46:00,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:00,236 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2020-12-22 03:46:00,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:00,268 INFO L93 Difference]: Finished difference Result 82 states and 136 transitions. [2020-12-22 03:46:00,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:46:00,270 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-22 03:46:00,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:00,281 INFO L225 Difference]: With dead ends: 82 [2020-12-22 03:46:00,282 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 03:46:00,285 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 03:46:00,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 03:46:00,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-22 03:46:00,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 03:46:00,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2020-12-22 03:46:00,326 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 10 [2020-12-22 03:46:00,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:00,327 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-12-22 03:46:00,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:46:00,327 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2020-12-22 03:46:00,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 03:46:00,328 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:00,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:00,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:46:00,329 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:00,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:00,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1303233586, now seen corresponding path program 1 times [2020-12-22 03:46:00,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:00,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109076079] [2020-12-22 03:46:00,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:00,446 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:00,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:00,572 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:46:00,572 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:46:00,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:46:00,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:46:00 BoogieIcfgContainer [2020-12-22 03:46:00,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:46:00,628 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:46:00,628 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:46:00,628 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:46:00,629 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:45:59" (3/4) ... [2020-12-22 03:46:00,633 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:46:00,633 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:46:00,636 INFO L168 Benchmark]: Toolchain (without parser) took 2074.28 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 124.0 MB in the end (delta: 729.4 kB). Peak memory consumption was 1.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:00,637 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:00,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.01 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 111.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:00,639 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.11 ms. Allocated memory is still 151.0 MB. Free memory was 111.4 MB in the beginning and 109.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:00,639 INFO L168 Benchmark]: Boogie Preprocessor took 45.75 ms. Allocated memory is still 151.0 MB. Free memory was 109.2 MB in the beginning and 107.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:00,640 INFO L168 Benchmark]: RCFGBuilder took 745.31 ms. Allocated memory is still 151.0 MB. Free memory was 107.4 MB in the beginning and 110.2 MB in the end (delta: -2.9 MB). Peak memory consumption was 6.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:00,641 INFO L168 Benchmark]: TraceAbstraction took 835.37 ms. Allocated memory is still 151.0 MB. Free memory was 109.7 MB in the beginning and 124.5 MB in the end (delta: -14.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:00,642 INFO L168 Benchmark]: Witness Printer took 5.49 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:00,647 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 372.01 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 111.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 56.11 ms. Allocated memory is still 151.0 MB. Free memory was 111.4 MB in the beginning and 109.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.75 ms. Allocated memory is still 151.0 MB. Free memory was 109.2 MB in the beginning and 107.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 745.31 ms. Allocated memory is still 151.0 MB. Free memory was 107.4 MB in the beginning and 110.2 MB in the end (delta: -2.9 MB). Peak memory consumption was 6.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 835.37 ms. Allocated memory is still 151.0 MB. Free memory was 109.7 MB in the beginning and 124.5 MB in the end (delta: -14.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 5.49 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 177]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 163, overapproximation of bitwiseOr at line 134, overapproximation of someBinaryArithmeticDOUBLEoperation at line 135. Possible FailurePath: [L19-L28] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L30] static const double zero = 0.0; [L113-L116] static const double two54_log10 = 1.80143985094819840000e+16, ivln10_log10 = 4.34294481903251816668e-01, log10_2hi_log10 = 3.01029995663611771306e-01, log10_2lo_log10 = 3.69423907715893078616e-13; [L118] static const double zero_log10 = 0.0; VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L172] double x = -1.0 / 0.0; [L121] double y, z; [L122] __int32_t i, k, hx; [L123] __uint32_t lx; VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L126] ieee_double_shape_type ew_u; [L127] ew_u.value = (x) [L128] EXPR ew_u.parts.msw [L128] (hx) = ew_u.parts.msw [L129] EXPR ew_u.parts.lsw [L129] (lx) = ew_u.parts.lsw [L132] k = 0 VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L133] COND TRUE hx < 0x00100000 VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L134] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L135] return -two54_log10 / zero_log10; VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L173] double res = __ieee754_log10(x); [L163] return x != x; VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L176] COND TRUE !isnan_double(res) [L177] reach_error() VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 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=42occurred 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, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...