java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:23:33,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:23:33,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:23:33,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-08 01:23:33,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:23:33,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:23:33,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:23:33,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:23:33,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:23:33,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:23:33,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:23:33,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:23:33,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:23:33,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:23:33,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:23:33,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:23:33,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 01:23:33,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:23:33,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:23:33,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:23:33,111 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-08 01:23:33,125 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:23:33,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:23:33,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:23:33,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:23:33,127 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:23:33,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:23:33,127 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:23:33,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:23:33,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:23:33,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:23:33,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:23:33,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:23:33,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:23:33,129 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:23:33,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:23:33,129 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:23:33,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:23:33,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:23:33,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:23:33,130 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:23:33,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:23:33,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:23:33,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:23:33,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:23:33,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:23:33,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:23:33,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:23:33,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:23:33,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:23:33,160 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:23:33,172 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:23:33,176 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:23:33,177 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:23:33,178 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:23:33,178 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131a.c [2019-09-08 01:23:33,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c2d786de/85b49af6dba94383bad9633a36f4d1e2/FLAGef28153a4 [2019-09-08 01:23:33,698 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:23:33,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131a.c [2019-09-08 01:23:33,707 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c2d786de/85b49af6dba94383bad9633a36f4d1e2/FLAGef28153a4 [2019-09-08 01:23:33,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c2d786de/85b49af6dba94383bad9633a36f4d1e2 [2019-09-08 01:23:34,007 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:23:34,009 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:23:34,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:34,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:23:34,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:23:34,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:33" (1/1) ... [2019-09-08 01:23:34,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7205acb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:34, skipping insertion in model container [2019-09-08 01:23:34,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:33" (1/1) ... [2019-09-08 01:23:34,026 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:23:34,050 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:23:34,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:34,293 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:23:34,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:34,460 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:23:34,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:34 WrapperNode [2019-09-08 01:23:34,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:34,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:23:34,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:23:34,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:23:34,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:34" (1/1) ... [2019-09-08 01:23:34,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:34" (1/1) ... [2019-09-08 01:23:34,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:34" (1/1) ... [2019-09-08 01:23:34,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:34" (1/1) ... [2019-09-08 01:23:34,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:34" (1/1) ... [2019-09-08 01:23:34,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:34" (1/1) ... [2019-09-08 01:23:34,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:34" (1/1) ... [2019-09-08 01:23:34,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:23:34,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:23:34,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:23:34,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:23:34,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:34" (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 [2019-09-08 01:23:34,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:23:34,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:23:34,573 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2019-09-08 01:23:34,573 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2019-09-08 01:23:34,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:23:34,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:23:34,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-08 01:23:34,574 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2019-09-08 01:23:34,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:23:34,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-08 01:23:34,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:23:34,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:23:34,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-08 01:23:34,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:23:34,576 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2019-09-08 01:23:34,576 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:23:34,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:23:34,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-09-08 01:23:34,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:23:35,025 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:23:35,026 INFO L283 CfgBuilder]: Removed 14 assume(true) statements. [2019-09-08 01:23:35,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:35 BoogieIcfgContainer [2019-09-08 01:23:35,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:23:35,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:23:35,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:23:35,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:23:35,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:23:33" (1/3) ... [2019-09-08 01:23:35,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cbcd338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:35, skipping insertion in model container [2019-09-08 01:23:35,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:34" (2/3) ... [2019-09-08 01:23:35,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cbcd338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:35, skipping insertion in model container [2019-09-08 01:23:35,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:35" (3/3) ... [2019-09-08 01:23:35,035 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131a.c [2019-09-08 01:23:35,045 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:23:35,054 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:23:35,071 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:23:35,098 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:23:35,099 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:23:35,099 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:23:35,099 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:23:35,099 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:23:35,100 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:23:35,100 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:23:35,100 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:23:35,100 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:23:35,117 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2019-09-08 01:23:35,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-08 01:23:35,123 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:35,124 INFO L399 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] [2019-09-08 01:23:35,126 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:35,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:35,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2019-09-08 01:23:35,132 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:35,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:35,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:35,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:35,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:35,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:35,289 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:35,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:23:35,294 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:23:35,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:23:35,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:23:35,317 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2019-09-08 01:23:35,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:35,366 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2019-09-08 01:23:35,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:23:35,367 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2019-09-08 01:23:35,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:35,377 INFO L225 Difference]: With dead ends: 112 [2019-09-08 01:23:35,378 INFO L226 Difference]: Without dead ends: 55 [2019-09-08 01:23:35,381 INFO L628 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 [2019-09-08 01:23:35,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-09-08 01:23:35,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-09-08 01:23:35,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-09-08 01:23:35,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2019-09-08 01:23:35,425 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2019-09-08 01:23:35,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:35,426 INFO L475 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2019-09-08 01:23:35,426 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:23:35,427 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2019-09-08 01:23:35,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-09-08 01:23:35,428 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:35,428 INFO L399 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] [2019-09-08 01:23:35,429 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:35,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:35,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2019-09-08 01:23:35,429 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:35,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:35,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:35,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:35,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:35,755 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:23:35,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:23:35 BoogieIcfgContainer [2019-09-08 01:23:35,822 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:23:35,824 INFO L168 Benchmark]: Toolchain (without parser) took 1814.99 ms. Allocated memory was 134.7 MB in the beginning and 202.4 MB in the end (delta: 67.6 MB). Free memory was 89.2 MB in the beginning and 115.9 MB in the end (delta: -26.7 MB). Peak memory consumption was 40.9 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:35,825 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 134.7 MB. Free memory was 108.0 MB in the beginning and 107.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-09-08 01:23:35,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.95 ms. Allocated memory was 134.7 MB in the beginning and 202.4 MB in the end (delta: 67.6 MB). Free memory was 89.0 MB in the beginning and 177.2 MB in the end (delta: -88.2 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:35,827 INFO L168 Benchmark]: Boogie Preprocessor took 64.75 ms. Allocated memory is still 202.4 MB. Free memory was 177.2 MB in the beginning and 174.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:35,828 INFO L168 Benchmark]: RCFGBuilder took 499.90 ms. Allocated memory is still 202.4 MB. Free memory was 174.8 MB in the beginning and 147.9 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:35,829 INFO L168 Benchmark]: TraceAbstraction took 793.49 ms. Allocated memory is still 202.4 MB. Free memory was 147.9 MB in the beginning and 115.9 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:35,833 INFO L335 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 134.7 MB. Free memory was 108.0 MB in the beginning and 107.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 451.95 ms. Allocated memory was 134.7 MB in the beginning and 202.4 MB in the end (delta: 67.6 MB). Free memory was 89.0 MB in the beginning and 177.2 MB in the end (delta: -88.2 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.75 ms. Allocated memory is still 202.4 MB. Free memory was 177.2 MB in the beginning and 174.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 499.90 ms. Allocated memory is still 202.4 MB. Free memory was 174.8 MB in the beginning and 147.9 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 793.49 ms. Allocated memory is still 202.4 MB. Free memory was 147.9 MB in the beginning and 115.9 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=8589934602, \old(Zero_fmod)=8589934597, \old(Zero_fmod)=8589934600, one_fmod=1, Zero_fmod={-2:0}] [L126] float x = __VERIFIER_nondet_float(); [L127] float y = 1.0f / 0.0f; VAL [one_fmod=1, x=8589934595, Zero_fmod={-2:0}] [L129] CALL isfinite_float(x) VAL [\old(x)=8589934595, one_fmod=1, Zero_fmod={-2:0}] [L109] __int32_t ix; VAL [\old(x)=8589934595, one_fmod=1, x=8589934595, Zero_fmod={-2:0}] [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); VAL [\old(x)=8589934595, \result=1, ix=2139095039, one_fmod=1, x=8589934595, Zero_fmod={-2:0}] [L129] RET isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=8589934595, Zero_fmod={-2:0}] [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=8589934595, \old(y)=8589934594, one_fmod=1, Zero_fmod={-2:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=8589934595, \old(y)=8589934594, one_fmod=1, x=8589934595, y=8589934594, Zero_fmod={-2:0}] [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff VAL [\old(x)=8589934595, \old(y)=8589934594, one_fmod=1, sx=1, x=8589934595, y=8589934594, Zero_fmod={-2:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [\old(x)=8589934595, \old(y)=8589934594, hx=2139095040, hy=0, one_fmod=1, sx=1, x=8589934595, y=8589934594, Zero_fmod={-2:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=8589934593, one_fmod=1, x=8589934595, y=8589934594, Zero_fmod={-2:0}] [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x VAL [one_fmod=1, res=8589934593, x=8589934595, y=8589934594, Zero_fmod={-2:0}] [L135] __VERIFIER_error() VAL [one_fmod=1, res=8589934593, x=8589934595, y=8589934594, Zero_fmod={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 76 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=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...