/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:24:43,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:24:43,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:24:43,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 20:24:43,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:24:43,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:24:43,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:24:43,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:24:43,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:24:43,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:24:43,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:24:43,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:24:43,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:24:43,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:24:43,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:24:43,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:24:43,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:24:43,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:24:43,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:24:43,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:24:43,298 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:24:43,323 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:24:43,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:24:43,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:24:43,328 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:24:43,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:24:43,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:24:43,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:24:43,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:24:43,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:24:43,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:24:43,331 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:24:43,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:24:43,331 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:24:43,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:24:43,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:24:43,332 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:24:43,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:24:43,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:24:43,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:24:43,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:24:43,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:24:43,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:24:43,334 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:24:43,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:24:43,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:24:43,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:24:43,785 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:24:43,786 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:24:43,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032a.c [2020-10-23 20:24:43,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19cc37463/69fc9ab48d294a32bc86fecabd9c9768/FLAG0834801d5 [2020-10-23 20:24:44,571 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:24:44,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032a.c [2020-10-23 20:24:44,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19cc37463/69fc9ab48d294a32bc86fecabd9c9768/FLAG0834801d5 [2020-10-23 20:24:44,928 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19cc37463/69fc9ab48d294a32bc86fecabd9c9768 [2020-10-23 20:24:44,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:24:44,939 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:24:44,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:24:44,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:24:44,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:24:44,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:24:44" (1/1) ... [2020-10-23 20:24:44,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67274dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:44, skipping insertion in model container [2020-10-23 20:24:44,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:24:44" (1/1) ... [2020-10-23 20:24:44,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:24:44,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:24:45,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:24:45,207 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:24:45,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:24:45,264 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:24:45,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:45 WrapperNode [2020-10-23 20:24:45,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:24:45,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:24:45,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:24:45,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:24:45,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:45" (1/1) ... [2020-10-23 20:24:45,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:45" (1/1) ... [2020-10-23 20:24:45,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:45" (1/1) ... [2020-10-23 20:24:45,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:45" (1/1) ... [2020-10-23 20:24:45,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:45" (1/1) ... [2020-10-23 20:24:45,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:45" (1/1) ... [2020-10-23 20:24:45,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:45" (1/1) ... [2020-10-23 20:24:45,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:24:45,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:24:45,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:24:45,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:24:45,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:45" (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 [2020-10-23 20:24:45,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:24:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:24:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:24:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-23 20:24:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-10-23 20:24:45,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-23 20:24:45,407 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:24:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:24:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:24:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:24:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:24:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-23 20:24:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-10-23 20:24:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 20:24:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:24:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:24:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:24:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 20:24:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-23 20:24:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:24:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:24:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:24:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:24:46,008 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:24:46,008 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-23 20:24:46,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:24:46 BoogieIcfgContainer [2020-10-23 20:24:46,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:24:46,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:24:46,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:24:46,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:24:46,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:24:44" (1/3) ... [2020-10-23 20:24:46,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3510922d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:24:46, skipping insertion in model container [2020-10-23 20:24:46,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:45" (2/3) ... [2020-10-23 20:24:46,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3510922d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:24:46, skipping insertion in model container [2020-10-23 20:24:46,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:24:46" (3/3) ... [2020-10-23 20:24:46,028 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032a.c [2020-10-23 20:24:46,043 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:24:46,049 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:24:46,064 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:24:46,108 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:24:46,109 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:24:46,109 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:24:46,109 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:24:46,110 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:24:46,110 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:24:46,110 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:24:46,110 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:24:46,142 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states. [2020-10-23 20:24:46,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-23 20:24:46,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:24:46,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:24:46,159 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:24:46,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:24:46,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1519777015, now seen corresponding path program 1 times [2020-10-23 20:24:46,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:24:46,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409227060] [2020-10-23 20:24:46,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:24:46,279 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:24:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:46,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:24:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:46,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 20:24:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:46,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:24:46,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409227060] [2020-10-23 20:24:46,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:24:46,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:24:46,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19526553] [2020-10-23 20:24:46,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:24:46,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:24:46,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:24:46,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:24:46,642 INFO L87 Difference]: Start difference. First operand 112 states. Second operand 4 states. [2020-10-23 20:24:47,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:24:47,012 INFO L93 Difference]: Finished difference Result 203 states and 235 transitions. [2020-10-23 20:24:47,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:24:47,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-23 20:24:47,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:24:47,026 INFO L225 Difference]: With dead ends: 203 [2020-10-23 20:24:47,027 INFO L226 Difference]: Without dead ends: 102 [2020-10-23 20:24:47,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:24:47,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-23 20:24:47,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-10-23 20:24:47,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-23 20:24:47,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 110 transitions. [2020-10-23 20:24:47,090 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 110 transitions. Word has length 35 [2020-10-23 20:24:47,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:24:47,090 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 110 transitions. [2020-10-23 20:24:47,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:24:47,091 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 110 transitions. [2020-10-23 20:24:47,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-23 20:24:47,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:24:47,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:24:47,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:24:47,094 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:24:47,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:24:47,095 INFO L82 PathProgramCache]: Analyzing trace with hash 57951711, now seen corresponding path program 1 times [2020-10-23 20:24:47,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:24:47,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986465754] [2020-10-23 20:24:47,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:24:47,099 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:24:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:24:47,165 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:24:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:24:47,241 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:24:47,298 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:24:47,298 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:24:47,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:24:47,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:24:47 BoogieIcfgContainer [2020-10-23 20:24:47,326 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:24:47,331 INFO L168 Benchmark]: Toolchain (without parser) took 2393.98 ms. Allocated memory is still 169.9 MB. Free memory was 146.7 MB in the beginning and 110.4 MB in the end (delta: 36.2 MB). Peak memory consumption was 37.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:47,333 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory was 101.6 MB in the beginning and 101.5 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:24:47,335 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.71 ms. Allocated memory is still 169.9 MB. Free memory was 146.1 MB in the beginning and 134.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:47,337 INFO L168 Benchmark]: Boogie Preprocessor took 56.81 ms. Allocated memory is still 169.9 MB. Free memory was 134.9 MB in the beginning and 133.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:47,338 INFO L168 Benchmark]: RCFGBuilder took 686.51 ms. Allocated memory is still 169.9 MB. Free memory was 132.9 MB in the beginning and 140.0 MB in the end (delta: -7.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:47,339 INFO L168 Benchmark]: TraceAbstraction took 1311.28 ms. Allocated memory is still 169.9 MB. Free memory was 139.6 MB in the beginning and 110.4 MB in the end (delta: 29.2 MB). Peak memory consumption was 30.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:47,350 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory was 101.6 MB in the beginning and 101.5 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 324.71 ms. Allocated memory is still 169.9 MB. Free memory was 146.1 MB in the beginning and 134.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.81 ms. Allocated memory is still 169.9 MB. Free memory was 134.9 MB in the beginning and 133.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 686.51 ms. Allocated memory is still 169.9 MB. Free memory was 132.9 MB in the beginning and 140.0 MB in the end (delta: -7.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1311.28 ms. Allocated memory is still 169.9 MB. Free memory was 139.6 MB in the beginning and 110.4 MB in the end (delta: 29.2 MB). Peak memory consumption was 30.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 92, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45. Possible FailurePath: [L88] double x = 0.0; [L89] CALL, EXPR round_double(x) [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L29] COND FALSE !(exponent_less_1023 < 20) [L43] COND TRUE exponent_less_1023 > 51 [L44] COND TRUE exponent_less_1023 == 1024 [L45] return x + x; [L89] RET, EXPR round_double(x) [L89] double res = round_double(x); [L92] EXPR res == 0.0 && __signbit_double(res) == 0 [L92] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L93] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1032a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 116 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 114 SDtfs, 17 SDslu, 81 SDs, 0 SdLazy, 129 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred 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: No data available, 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...