/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_1010.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:06:47,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:06:47,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:06:47,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:06:47,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:06:47,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:06:47,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:06:47,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:06:47,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:06:47,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:06:47,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:06:47,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:06:47,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:06:47,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:06:47,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:06:47,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:06:47,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:06:47,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:06:47,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:06:47,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:06:47,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:06:47,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:06:47,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:06:47,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:06:47,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:06:47,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:06:47,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:06:47,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:06:47,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:06:47,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:06:47,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:06:47,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:06:47,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:06:47,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:06:47,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:06:47,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:06:47,383 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 16:06:47,410 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:06:47,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:06:47,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:06:47,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:06:47,413 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:06:47,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:06:47,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:06:47,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:06:47,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:06:47,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:06:47,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:06:47,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:06:47,414 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:06:47,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:06:47,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:06:47,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:06:47,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:06:47,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:06:47,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:06:47,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:06:47,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:06:47,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:06:47,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:06:47,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:06:47,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:06:47,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:06:47,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:06:47,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:06:47,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:06:47,867 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:06:47,869 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:06:47,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2021-01-06 16:06:47,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/46af000e9/dadf689747264bbb905f7f2608d84f9e/FLAGa9ac2df36 [2021-01-06 16:06:48,609 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:06:48,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2021-01-06 16:06:48,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/46af000e9/dadf689747264bbb905f7f2608d84f9e/FLAGa9ac2df36 [2021-01-06 16:06:48,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/46af000e9/dadf689747264bbb905f7f2608d84f9e [2021-01-06 16:06:48,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:06:48,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:06:48,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:06:48,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:06:48,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:06:48,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:06:48" (1/1) ... [2021-01-06 16:06:48,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e47613e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:48, skipping insertion in model container [2021-01-06 16:06:48,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:06:48" (1/1) ... [2021-01-06 16:06:48,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:06:49,006 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[~ix~0,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~sf_u~0,],word] left hand side expression in assignment: lhs: VariableLHS[~x,] [2021-01-06 16:06:49,182 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_1010.c[999,1012] [2021-01-06 16:06:49,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:06:49,199 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[~ix~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,] [2021-01-06 16:06:49,220 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_1010.c[999,1012] [2021-01-06 16:06:49,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:06:49,238 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:06:49,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:49 WrapperNode [2021-01-06 16:06:49,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:06:49,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:06:49,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:06:49,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:06:49,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:49" (1/1) ... [2021-01-06 16:06:49,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:49" (1/1) ... [2021-01-06 16:06:49,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:06:49,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:06:49,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:06:49,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:06:49,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:49" (1/1) ... [2021-01-06 16:06:49,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:49" (1/1) ... [2021-01-06 16:06:49,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:49" (1/1) ... [2021-01-06 16:06:49,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:49" (1/1) ... [2021-01-06 16:06:49,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:49" (1/1) ... [2021-01-06 16:06:49,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:49" (1/1) ... [2021-01-06 16:06:49,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:49" (1/1) ... [2021-01-06 16:06:49,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:06:49,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:06:49,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:06:49,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:06:49,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:49" (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 [2021-01-06 16:06:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:06:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:06:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-01-06 16:06:49,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 16:06:49,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-01-06 16:06:49,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:06:49,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:06:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:06:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:06:49,702 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:06:49,703 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-01-06 16:06:49,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:49 BoogieIcfgContainer [2021-01-06 16:06:49,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:06:49,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:06:49,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:06:49,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:06:49,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:06:48" (1/3) ... [2021-01-06 16:06:49,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fd6926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:06:49, skipping insertion in model container [2021-01-06 16:06:49,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:49" (2/3) ... [2021-01-06 16:06:49,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fd6926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:06:49, skipping insertion in model container [2021-01-06 16:06:49,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:49" (3/3) ... [2021-01-06 16:06:49,715 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2021-01-06 16:06:49,722 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:06:49,727 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:06:49,748 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:06:49,813 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:06:49,814 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:06:49,814 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:06:49,814 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:06:49,815 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:06:49,815 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:06:49,815 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:06:49,816 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:06:49,833 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2021-01-06 16:06:49,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 16:06:49,839 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:49,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:49,840 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:49,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:49,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1641238961, now seen corresponding path program 1 times [2021-01-06 16:06:49,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:49,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951246843] [2021-01-06 16:06:49,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:06:50,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951246843] [2021-01-06 16:06:50,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:50,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:06:50,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818425943] [2021-01-06 16:06:50,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:06:50,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:50,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:06:50,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:06:50,133 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2021-01-06 16:06:50,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:50,151 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2021-01-06 16:06:50,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:06:50,153 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2021-01-06 16:06:50,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:50,162 INFO L225 Difference]: With dead ends: 28 [2021-01-06 16:06:50,163 INFO L226 Difference]: Without dead ends: 12 [2021-01-06 16:06:50,166 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 [2021-01-06 16:06:50,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-01-06 16:06:50,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-01-06 16:06:50,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-01-06 16:06:50,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-01-06 16:06:50,204 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 9 [2021-01-06 16:06:50,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:50,204 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-01-06 16:06:50,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:06:50,205 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-01-06 16:06:50,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 16:06:50,206 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:50,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:50,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:06:50,206 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:50,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:50,207 INFO L82 PathProgramCache]: Analyzing trace with hash 558246130, now seen corresponding path program 1 times [2021-01-06 16:06:50,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:50,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336376674] [2021-01-06 16:06:50,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:06:50,286 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:06:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:06:50,321 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:06:50,349 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:06:50,350 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:06:50,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:06:50,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:06:50 BoogieIcfgContainer [2021-01-06 16:06:50,398 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:06:50,399 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:06:50,399 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:06:50,399 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:06:50,400 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:49" (3/4) ... [2021-01-06 16:06:50,405 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 16:06:50,405 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:06:50,410 INFO L168 Benchmark]: Toolchain (without parser) took 1437.39 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 114.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:50,412 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:06:50,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.62 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 115.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:50,417 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.77 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:50,419 INFO L168 Benchmark]: Boogie Preprocessor took 29.85 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 112.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:50,420 INFO L168 Benchmark]: RCFGBuilder took 397.72 ms. Allocated memory is still 151.0 MB. Free memory was 112.7 MB in the beginning and 98.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:50,421 INFO L168 Benchmark]: TraceAbstraction took 691.23 ms. Allocated memory is still 151.0 MB. Free memory was 98.5 MB in the beginning and 114.0 MB in the end (delta: -15.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:06:50,422 INFO L168 Benchmark]: Witness Printer took 6.01 ms. Allocated memory is still 151.0 MB. Free memory is still 114.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:06:50,439 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 266.62 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 115.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 35.77 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.85 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 112.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 397.72 ms. Allocated memory is still 151.0 MB. Free memory was 112.7 MB in the beginning and 98.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 691.23 ms. Allocated memory is still 151.0 MB. Free memory was 98.5 MB in the beginning and 114.0 MB in the end (delta: -15.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 6.01 ms. Allocated memory is still 151.0 MB. Free memory is still 114.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseAnd at line 25. Possible FailurePath: [L37] float x = 0.0f / 0.0f; [L17] __uint32_t ix; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (ix) = gf_u.word [L24] ieee_float_shape_type sf_u; [L25] sf_u.word = (ix & 0x7fffffff) [L26] EXPR sf_u.value [L26] (x) = sf_u.value [L28] return x; [L38] float res = fabs_float(x); [L14] return x != x; [L41] COND TRUE !isnan_float(res) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 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=15occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 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...