/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-newlib/float_req_bl_1052a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:12:33,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:12:33,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:12:33,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:12:33,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:12:33,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:12:33,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:12:33,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:12:33,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:12:33,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:12:33,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:12:33,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:12:33,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:12:33,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:12:33,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:12:33,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:12:33,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:12:33,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:12:33,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:12:33,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:12:33,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:12:33,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:12:33,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:12:33,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:12:33,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 06:12:33,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:12:33,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:12:33,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:12:33,300 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 06:12:33,352 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:12:33,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:12:33,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:12:33,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:12:33,359 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:12:33,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:12:33,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:12:33,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:12:33,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:12:33,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:12:33,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:12:33,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:12:33,362 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:12:33,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:12:33,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:12:33,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:12:33,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:12:33,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:12:33,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:12:33,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:12:33,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:12:33,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:12:33,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:12:33,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:12:33,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:12:33,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:12:33,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:12:33,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:12:33,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:12:33,878 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:12:33,879 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:12:33,880 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1052a.c [2020-12-23 06:12:33,992 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/578f70d21/c7c9c449b9d7456ca3e98eec22b53e35/FLAG1e60db6c5 [2020-12-23 06:12:34,776 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:12:34,777 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1052a.c [2020-12-23 06:12:34,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/578f70d21/c7c9c449b9d7456ca3e98eec22b53e35/FLAG1e60db6c5 [2020-12-23 06:12:35,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/578f70d21/c7c9c449b9d7456ca3e98eec22b53e35 [2020-12-23 06:12:35,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:12:35,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:12:35,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:12:35,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:12:35,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:12:35,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:12:35" (1/1) ... [2020-12-23 06:12:35,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54d2de8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:35, skipping insertion in model container [2020-12-23 06:12:35,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:12:35" (1/1) ... [2020-12-23 06:12:35,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:12:35,157 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: StructLHS[VariableLHS[~gf_u~0,],value] left hand side expression in assignment: lhs: VariableLHS[~i0~0,] left hand side expression in assignment: lhs: VariableLHS[~ix~0,] left hand side expression in assignment: lhs: VariableLHS[~j0~0,] left hand side expression in assignment: lhs: VariableLHS[~i0~0,] left hand side expression in assignment: lhs: VariableLHS[~i0~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~sf_u~0,],word] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~gf_u~1,],value] left hand side expression in assignment: lhs: VariableLHS[~ix~1,] [2020-12-23 06:12:35,440 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1052a.c[1777,1790] [2020-12-23 06:12:35,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:12:35,457 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#gf_u~0,],base],StructAccessExpression[IdentifierExpression[~#gf_u~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~i0~0,] left hand side expression in assignment: lhs: VariableLHS[~ix~0,] left hand side expression in assignment: lhs: VariableLHS[~j0~0,] left hand side expression in assignment: lhs: VariableLHS[~i0~0,] left hand side expression in assignment: lhs: VariableLHS[~i0~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#sf_u~0,],base],StructAccessExpression[IdentifierExpression[~#sf_u~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#gf_u~1,],base],StructAccessExpression[IdentifierExpression[~#gf_u~1,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~ix~1,] [2020-12-23 06:12:35,524 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1052a.c[1777,1790] [2020-12-23 06:12:35,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:12:35,548 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:12:35,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:35 WrapperNode [2020-12-23 06:12:35,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:12:35,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:12:35,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:12:35,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:12:35,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:35" (1/1) ... [2020-12-23 06:12:35,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:35" (1/1) ... [2020-12-23 06:12:35,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:12:35,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:12:35,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:12:35,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:12:35,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:35" (1/1) ... [2020-12-23 06:12:35,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:35" (1/1) ... [2020-12-23 06:12:35,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:35" (1/1) ... [2020-12-23 06:12:35,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:35" (1/1) ... [2020-12-23 06:12:35,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:35" (1/1) ... [2020-12-23 06:12:35,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:35" (1/1) ... [2020-12-23 06:12:35,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:35" (1/1) ... [2020-12-23 06:12:35,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:12:35,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:12:35,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:12:35,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:12:35,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:12:35,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:12:35,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:12:35,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-23 06:12:35,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 06:12:35,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-23 06:12:35,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:12:35,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:12:35,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 06:12:35,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 06:12:36,270 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:12:36,270 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-23 06:12:36,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:12:36 BoogieIcfgContainer [2020-12-23 06:12:36,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:12:36,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:12:36,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:12:36,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:12:36,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:12:35" (1/3) ... [2020-12-23 06:12:36,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4ca9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:12:36, skipping insertion in model container [2020-12-23 06:12:36,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:35" (2/3) ... [2020-12-23 06:12:36,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4ca9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:12:36, skipping insertion in model container [2020-12-23 06:12:36,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:12:36" (3/3) ... [2020-12-23 06:12:36,300 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052a.c [2020-12-23 06:12:36,318 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:12:36,331 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:12:36,375 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:12:36,421 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:12:36,422 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:12:36,422 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:12:36,423 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:12:36,423 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:12:36,423 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:12:36,423 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:12:36,423 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:12:36,440 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-23 06:12:36,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 06:12:36,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:12:36,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:12:36,448 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:12:36,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:12:36,455 INFO L82 PathProgramCache]: Analyzing trace with hash -2064187560, now seen corresponding path program 1 times [2020-12-23 06:12:36,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:12:36,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628033928] [2020-12-23 06:12:36,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:12:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:12:36,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:12:36,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628033928] [2020-12-23 06:12:36,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:12:36,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 06:12:36,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127024078] [2020-12-23 06:12:36,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 06:12:36,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:12:36,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 06:12:36,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:12:36,661 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-23 06:12:36,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:12:36,682 INFO L93 Difference]: Finished difference Result 56 states and 86 transitions. [2020-12-23 06:12:36,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 06:12:36,684 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-23 06:12:36,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:12:36,697 INFO L225 Difference]: With dead ends: 56 [2020-12-23 06:12:36,697 INFO L226 Difference]: Without dead ends: 26 [2020-12-23 06:12:36,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:12:36,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-23 06:12:36,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-23 06:12:36,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-23 06:12:36,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2020-12-23 06:12:36,743 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 12 [2020-12-23 06:12:36,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:12:36,744 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2020-12-23 06:12:36,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 06:12:36,744 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2020-12-23 06:12:36,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 06:12:36,745 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:12:36,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:12:36,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:12:36,746 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:12:36,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:12:36,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1026834198, now seen corresponding path program 1 times [2020-12-23 06:12:36,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:12:36,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078556122] [2020-12-23 06:12:36,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:12:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:12:36,885 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:12:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:12:36,996 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:12:37,052 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 06:12:37,053 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 06:12:37,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:12:37,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:12:37 BoogieIcfgContainer [2020-12-23 06:12:37,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:12:37,113 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:12:37,114 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:12:37,114 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:12:37,114 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:12:36" (3/4) ... [2020-12-23 06:12:37,119 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 06:12:37,119 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:12:37,125 INFO L168 Benchmark]: Toolchain (without parser) took 2005.76 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 97.4 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.9 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:37,126 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:12:37,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.25 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:37,129 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.42 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:37,130 INFO L168 Benchmark]: Boogie Preprocessor took 39.05 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 111.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:37,131 INFO L168 Benchmark]: RCFGBuilder took 616.43 ms. Allocated memory is still 151.0 MB. Free memory was 111.8 MB in the beginning and 124.7 MB in the end (delta: -12.9 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:37,132 INFO L168 Benchmark]: TraceAbstraction took 831.01 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 97.9 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:37,134 INFO L168 Benchmark]: Witness Printer took 6.21 ms. Allocated memory is still 151.0 MB. Free memory was 97.9 MB in the beginning and 97.4 MB in the end (delta: 491.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:12:37,150 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 429.25 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 67.42 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.05 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 111.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 616.43 ms. Allocated memory is still 151.0 MB. Free memory was 111.8 MB in the beginning and 124.7 MB in the end (delta: -12.9 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 831.01 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 97.9 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * Witness Printer took 6.21 ms. Allocated memory is still 151.0 MB. Free memory was 97.9 MB in the beginning and 97.4 MB in the end (delta: 491.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 82]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 77, overapproximation of bitwiseAnd at line 66. Possible FailurePath: [L13] static const float huge_floor = 1.0e30; VAL [huge_floor=1000000000000000000000000000000] [L77] float x = 1.0f / 0.0f; [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; VAL [huge_floor=1000000000000000000000000000000] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f VAL [huge_floor=1000000000000000000000000000000] [L25] COND FALSE !(j0 < 23) VAL [huge_floor=1000000000000000000000000000000] [L45] COND FALSE !(!((ix) < 0x7f800000L)) [L48] return x; VAL [huge_floor=1000000000000000000000000000000] [L78] float res = floor_float(x); [L60] __int32_t ix; VAL [huge_floor=1000000000000000000000000000000] [L62] ieee_float_shape_type gf_u; [L63] gf_u.value = (x) [L64] EXPR gf_u.word [L64] (ix) = gf_u.word [L66] ix &= 0x7fffffff [L67] return ((ix) == 0x7f800000L); VAL [huge_floor=1000000000000000000000000000000] [L81] COND TRUE !isinf_float(res) [L82] reach_error() VAL [huge_floor=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 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=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...