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_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:23:39,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:23:39,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:23:39,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-08 01:23:39,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:23:39,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:23:39,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:23:39,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:23:39,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:23:39,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:23:39,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:23:39,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:23:39,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:23:39,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:23:39,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:23:39,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:23:39,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 01:23:39,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:23:39,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:23:39,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:23:39,212 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 01:23:39,226 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:23:39,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:23:39,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:23:39,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:23:39,227 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:23:39,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:23:39,228 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:23:39,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:23:39,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:23:39,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:23:39,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:23:39,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:23:39,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:23:39,229 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:23:39,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:23:39,229 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:23:39,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:23:39,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:23:39,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:23:39,230 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:23:39,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:23:39,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:23:39,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:23:39,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:23:39,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:23:39,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:23:39,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:23:39,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:23:39,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:23:39,259 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:23:39,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:23:39,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:23:39,274 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:23:39,275 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:23:39,276 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250.c [2019-09-08 01:23:39,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3a1c2ebf/d91e039a955e4bff97a0e0b776dd0ba6/FLAGb58b3b396 [2019-09-08 01:23:39,740 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:23:39,741 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1250.c [2019-09-08 01:23:39,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3a1c2ebf/d91e039a955e4bff97a0e0b776dd0ba6/FLAGb58b3b396 [2019-09-08 01:23:40,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3a1c2ebf/d91e039a955e4bff97a0e0b776dd0ba6 [2019-09-08 01:23:40,121 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:23:40,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:23:40,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:40,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:23:40,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:23:40,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:40" (1/1) ... [2019-09-08 01:23:40,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ae3b6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:40, skipping insertion in model container [2019-09-08 01:23:40,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:40" (1/1) ... [2019-09-08 01:23:40,141 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:23:40,163 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:23:40,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:40,437 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:23:40,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:40,582 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:23:40,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:40 WrapperNode [2019-09-08 01:23:40,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:40,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:23:40,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:23:40,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:23:40,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:40" (1/1) ... [2019-09-08 01:23:40,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:40" (1/1) ... [2019-09-08 01:23:40,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:40" (1/1) ... [2019-09-08 01:23:40,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:40" (1/1) ... [2019-09-08 01:23:40,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:40" (1/1) ... [2019-09-08 01:23:40,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:40" (1/1) ... [2019-09-08 01:23:40,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:40" (1/1) ... [2019-09-08 01:23:40,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:23:40,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:23:40,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:23:40,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:23:40,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:40" (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 01:23:40,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:23:40,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:23:40,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2019-09-08 01:23:40,701 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2019-09-08 01:23:40,701 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2019-09-08 01:23:40,701 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:23:40,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:23:40,701 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2019-09-08 01:23:40,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:23:40,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-08 01:23:40,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:23:40,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:23:40,702 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2019-09-08 01:23:40,702 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2019-09-08 01:23:40,702 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:23:40,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:23:40,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:23:40,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:23:40,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-08 01:23:40,998 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:23:40,999 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-08 01:23:41,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:41 BoogieIcfgContainer [2019-09-08 01:23:41,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:23:41,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:23:41,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:23:41,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:23:41,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:23:40" (1/3) ... [2019-09-08 01:23:41,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb800be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:41, skipping insertion in model container [2019-09-08 01:23:41,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:40" (2/3) ... [2019-09-08 01:23:41,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb800be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:41, skipping insertion in model container [2019-09-08 01:23:41,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:41" (3/3) ... [2019-09-08 01:23:41,029 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2019-09-08 01:23:41,040 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:23:41,056 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:23:41,074 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:23:41,109 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:23:41,110 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:23:41,110 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:23:41,110 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:23:41,111 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:23:41,111 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:23:41,111 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:23:41,111 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:23:41,111 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:23:41,129 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-09-08 01:23:41,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-08 01:23:41,135 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:41,136 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] [2019-09-08 01:23:41,137 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:41,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:41,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1130060244, now seen corresponding path program 1 times [2019-09-08 01:23:41,143 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:41,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:41,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:41,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:41,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:41,282 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 01:23:41,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:41,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:23:41,288 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:23:41,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:23:41,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:23:41,306 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2019-09-08 01:23:41,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:41,335 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2019-09-08 01:23:41,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:23:41,337 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2019-09-08 01:23:41,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:41,348 INFO L225 Difference]: With dead ends: 71 [2019-09-08 01:23:41,348 INFO L226 Difference]: Without dead ends: 36 [2019-09-08 01:23:41,352 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 01:23:41,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-09-08 01:23:41,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-09-08 01:23:41,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-08 01:23:41,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2019-09-08 01:23:41,402 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2019-09-08 01:23:41,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:41,404 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2019-09-08 01:23:41,404 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:23:41,404 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2019-09-08 01:23:41,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-08 01:23:41,407 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:41,407 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] [2019-09-08 01:23:41,407 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:41,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:41,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1283143896, now seen corresponding path program 1 times [2019-09-08 01:23:41,408 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:41,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:41,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:41,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:41,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:41,523 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 01:23:41,524 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:41,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 01:23:41,526 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 01:23:41,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 01:23:41,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 01:23:41,528 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2019-09-08 01:23:41,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:41,593 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2019-09-08 01:23:41,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 01:23:41,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2019-09-08 01:23:41,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:41,599 INFO L225 Difference]: With dead ends: 51 [2019-09-08 01:23:41,599 INFO L226 Difference]: Without dead ends: 40 [2019-09-08 01:23:41,600 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 01:23:41,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-08 01:23:41,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-09-08 01:23:41,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-08 01:23:41,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2019-09-08 01:23:41,625 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2019-09-08 01:23:41,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:41,626 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2019-09-08 01:23:41,626 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 01:23:41,627 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2019-09-08 01:23:41,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-08 01:23:41,629 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:41,630 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, 1, 1] [2019-09-08 01:23:41,631 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:41,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:41,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1220464557, now seen corresponding path program 1 times [2019-09-08 01:23:41,632 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:41,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:41,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:41,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:41,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:41,764 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 01:23:41,765 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:41,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 01:23:41,765 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 01:23:41,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 01:23:41,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 01:23:41,766 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2019-09-08 01:23:41,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:41,792 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2019-09-08 01:23:41,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 01:23:41,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-09-08 01:23:41,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:41,794 INFO L225 Difference]: With dead ends: 55 [2019-09-08 01:23:41,795 INFO L226 Difference]: Without dead ends: 44 [2019-09-08 01:23:41,795 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 01:23:41,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-09-08 01:23:41,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2019-09-08 01:23:41,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-08 01:23:41,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2019-09-08 01:23:41,809 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2019-09-08 01:23:41,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:41,810 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2019-09-08 01:23:41,810 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 01:23:41,810 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2019-09-08 01:23:41,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-08 01:23:41,811 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:41,812 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, 1, 1] [2019-09-08 01:23:41,812 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:41,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:41,813 INFO L82 PathProgramCache]: Analyzing trace with hash 287087252, now seen corresponding path program 1 times [2019-09-08 01:23:41,813 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:41,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:41,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:41,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:41,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:23:41,955 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:23:41,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:23:41 BoogieIcfgContainer [2019-09-08 01:23:41,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:23:41,985 INFO L168 Benchmark]: Toolchain (without parser) took 1862.18 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 89.2 MB in the beginning and 111.6 MB in the end (delta: -22.4 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:41,986 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 132.6 MB. Free memory was 107.2 MB in the beginning and 107.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:23:41,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 459.23 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 89.0 MB in the beginning and 176.5 MB in the end (delta: -87.5 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:41,988 INFO L168 Benchmark]: Boogie Preprocessor took 58.60 ms. Allocated memory is still 199.8 MB. Free memory was 176.5 MB in the beginning and 174.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:41,989 INFO L168 Benchmark]: RCFGBuilder took 364.77 ms. Allocated memory is still 199.8 MB. Free memory was 174.2 MB in the beginning and 156.9 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:41,990 INFO L168 Benchmark]: TraceAbstraction took 974.20 ms. Allocated memory is still 199.8 MB. Free memory was 156.9 MB in the beginning and 111.6 MB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. [2019-09-08 01:23:41,994 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 132.6 MB. Free memory was 107.2 MB in the beginning and 107.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 459.23 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 89.0 MB in the beginning and 176.5 MB in the end (delta: -87.5 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.60 ms. Allocated memory is still 199.8 MB. Free memory was 176.5 MB in the beginning and 174.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 364.77 ms. Allocated memory is still 199.8 MB. Free memory was 174.2 MB in the beginning and 156.9 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 974.20 ms. Allocated memory is still 199.8 MB. Free memory was 156.9 MB in the beginning and 111.6 MB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 65]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someBinaryArithmeticFLOAToperation at line 60. Possible FailurePath: [L60] float x = 0.0f / 0.0f; [L61] float y = 0.0f / 0.0f; [L62] CALL, EXPR fmax_float(x, y) VAL [\old(x)=4286578692, \old(y)=4286578690] [L43] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578692] [L20] __uint32_t w; VAL [\old(x)=4286578692, x=4286578692] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578692, w=4286578689, x=4286578692] [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; VAL [\old(x)=4286578692, \result=0, w=4286578689, x=4286578692] [L43] RET, EXPR __fpclassify_float(x) VAL [\old(x)=4286578692, \old(y)=4286578690, __fpclassify_float(x)=0, x=4286578692, y=4286578690] [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; VAL [\old(x)=4286578692, \old(y)=4286578690, \result=4286578690, x=4286578692, y=4286578690] [L62] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=4286578690, x=4286578692, y=4286578690] [L62] float res = fmax_float(x, y); [L64] CALL, EXPR isnan_float(res) VAL [\old(x)=4286578690] [L54] return x != x; VAL [\old(x)=4286578690, \result=0, x=4286578690] [L64] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=4286578690, x=4286578692, y=4286578690] [L64] COND TRUE !isnan_float(res) [L65] __VERIFIER_error() VAL [res=4286578690, x=4286578692, y=4286578690] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. UNSAFE Result, 0.8s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 129 SDtfs, 0 SDslu, 152 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...