/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_0832a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:12:14,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:12:14,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:12:14,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:12:14,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:12:15,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:12:15,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:12:15,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:12:15,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:12:15,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:12:15,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:12:15,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:12:15,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:12:15,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:12:15,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:12:15,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:12:15,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:12:15,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:12:15,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:12:15,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:12:15,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:12:15,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:12:15,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:12:15,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:12:15,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 06:12:15,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 06:12:15,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 06:12:15,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 06:12:15,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 06:12:15,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 06:12:15,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 06:12:15,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 06:12:15,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 06:12:15,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:12:15,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:12:15,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:12:15,120 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 06:12:15,149 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:12:15,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:12:15,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:12:15,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:12:15,152 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:12:15,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:12:15,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:12:15,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:12:15,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:12:15,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:12:15,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:12:15,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:12:15,154 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:12:15,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:12:15,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:12:15,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:12:15,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:12:15,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:12:15,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:12:15,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:12:15,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:12:15,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:12:15,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:12:15,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:12:15,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:12:15,157 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:12:15,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:12:15,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:12:15,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:12:15,593 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:12:15,594 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:12:15,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2020-12-23 06:12:15,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8aac31e3e/48fac6897d394d12a350a60b52cbb53b/FLAG93fa4d616 [2020-12-23 06:12:16,323 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:12:16,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2020-12-23 06:12:16,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8aac31e3e/48fac6897d394d12a350a60b52cbb53b/FLAG93fa4d616 [2020-12-23 06:12:16,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8aac31e3e/48fac6897d394d12a350a60b52cbb53b [2020-12-23 06:12:16,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:12:16,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:12:16,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:12:16,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:12:16,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:12:16,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:12:16" (1/1) ... [2020-12-23 06:12:16,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139cd676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:16, skipping insertion in model container [2020-12-23 06:12:16,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:12:16" (1/1) ... [2020-12-23 06:12:16,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:12:16,408 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[~sx~0,] left hand side expression in assignment: lhs: VariableLHS[~xsb~0,] ----Is the binary operator a bitwise operator? true left hand side expression in assignment: lhs: VariableLHS[~hx~0,] ----Is the binary operator a bitwise operator? true left hand side expression in assignment: lhs: VariableLHS[~hi~0,] left hand side expression in assignment: lhs: VariableLHS[~lo~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~hi~0,] left hand side expression in assignment: lhs: VariableLHS[~lo~0,] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~gf_u~1,],value] left hand side expression in assignment: lhs: VariableLHS[~hy~0,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~sf_u~0,],word] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~gf_u~2,],value] left hand side expression in assignment: lhs: VariableLHS[~hy~1,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~sf_u~1,],word] left hand side expression in assignment: lhs: VariableLHS[~y~0,] [2020-12-23 06:12:16,615 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_0832a.c[3180,3193] [2020-12-23 06:12:16,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:12:16,630 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[~sx~0,] left hand side expression in assignment: lhs: VariableLHS[~xsb~0,] ----Is the binary operator a bitwise operator? true left hand side expression in assignment: lhs: VariableLHS[~hx~0,] ----Is the binary operator a bitwise operator? true left hand side expression in assignment: lhs: VariableLHS[~hi~0,] left hand side expression in assignment: lhs: VariableLHS[~lo~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~hi~0,] left hand side expression in assignment: lhs: VariableLHS[~lo~0,] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] 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[~hy~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[~y~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#gf_u~2,],base],StructAccessExpression[IdentifierExpression[~#gf_u~2,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~hy~1,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#sf_u~1,],base],StructAccessExpression[IdentifierExpression[~#sf_u~1,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~y~0,] [2020-12-23 06:12:16,678 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_0832a.c[3180,3193] [2020-12-23 06:12:16,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:12:16,701 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:12:16,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:16 WrapperNode [2020-12-23 06:12:16,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:12:16,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:12:16,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:12:16,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:12:16,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:16" (1/1) ... [2020-12-23 06:12:16,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:16" (1/1) ... [2020-12-23 06:12:16,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:12:16,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:12:16,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:12:16,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:12:16,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:16" (1/1) ... [2020-12-23 06:12:16,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:16" (1/1) ... [2020-12-23 06:12:16,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:16" (1/1) ... [2020-12-23 06:12:16,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:16" (1/1) ... [2020-12-23 06:12:16,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:16" (1/1) ... [2020-12-23 06:12:16,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:16" (1/1) ... [2020-12-23 06:12:16,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:16" (1/1) ... [2020-12-23 06:12:16,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:12:16,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:12:16,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:12:16,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:12:16,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:16" (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 06:12:17,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:12:17,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:12:17,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 06:12:17,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-23 06:12:17,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-23 06:12:17,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:12:17,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:12:17,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 06:12:17,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-23 06:12:17,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 06:12:17,715 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:12:17,715 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-23 06:12:17,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:12:17 BoogieIcfgContainer [2020-12-23 06:12:17,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:12:17,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:12:17,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:12:17,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:12:17,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:12:16" (1/3) ... [2020-12-23 06:12:17,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adc2034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:12:17, skipping insertion in model container [2020-12-23 06:12:17,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:16" (2/3) ... [2020-12-23 06:12:17,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adc2034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:12:17, skipping insertion in model container [2020-12-23 06:12:17,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:12:17" (3/3) ... [2020-12-23 06:12:17,727 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832a.c [2020-12-23 06:12:17,735 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:12:17,741 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:12:17,764 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:12:17,793 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:12:17,794 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:12:17,794 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:12:17,794 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:12:17,794 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:12:17,795 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:12:17,795 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:12:17,795 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:12:17,811 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-23 06:12:17,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 06:12:17,818 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:12:17,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:12:17,819 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:12:17,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:12:17,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1829501204, now seen corresponding path program 1 times [2020-12-23 06:12:17,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:12:17,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271514039] [2020-12-23 06:12:17,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:12:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:12:18,025 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 06:12:18,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271514039] [2020-12-23 06:12:18,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:12:18,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 06:12:18,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847036497] [2020-12-23 06:12:18,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 06:12:18,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:12:18,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 06:12:18,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:12:18,055 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-23 06:12:18,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:12:18,082 INFO L93 Difference]: Finished difference Result 84 states and 142 transitions. [2020-12-23 06:12:18,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 06:12:18,083 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-23 06:12:18,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:12:18,095 INFO L225 Difference]: With dead ends: 84 [2020-12-23 06:12:18,096 INFO L226 Difference]: Without dead ends: 40 [2020-12-23 06:12:18,100 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 06:12:18,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-23 06:12:18,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-12-23 06:12:18,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-23 06:12:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 55 transitions. [2020-12-23 06:12:18,143 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 55 transitions. Word has length 9 [2020-12-23 06:12:18,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:12:18,144 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 55 transitions. [2020-12-23 06:12:18,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 06:12:18,144 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 55 transitions. [2020-12-23 06:12:18,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 06:12:18,145 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:12:18,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:12:18,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:12:18,146 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:12:18,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:12:18,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1558849609, now seen corresponding path program 1 times [2020-12-23 06:12:18,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:12:18,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559586035] [2020-12-23 06:12:18,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:12:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:12:18,255 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 06:12:18,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559586035] [2020-12-23 06:12:18,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:12:18,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 06:12:18,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456283054] [2020-12-23 06:12:18,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 06:12:18,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:12:18,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 06:12:18,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 06:12:18,263 INFO L87 Difference]: Start difference. First operand 40 states and 55 transitions. Second operand 3 states. [2020-12-23 06:12:18,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:12:18,369 INFO L93 Difference]: Finished difference Result 85 states and 111 transitions. [2020-12-23 06:12:18,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 06:12:18,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-23 06:12:18,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:12:18,372 INFO L225 Difference]: With dead ends: 85 [2020-12-23 06:12:18,372 INFO L226 Difference]: Without dead ends: 64 [2020-12-23 06:12:18,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 06:12:18,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-23 06:12:18,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 46. [2020-12-23 06:12:18,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 06:12:18,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2020-12-23 06:12:18,382 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 10 [2020-12-23 06:12:18,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:12:18,382 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2020-12-23 06:12:18,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 06:12:18,383 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2020-12-23 06:12:18,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 06:12:18,384 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:12:18,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:12:18,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:12:18,384 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:12:18,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:12:18,385 INFO L82 PathProgramCache]: Analyzing trace with hash -921463484, now seen corresponding path program 1 times [2020-12-23 06:12:18,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:12:18,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455387401] [2020-12-23 06:12:18,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:12:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:12:18,477 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 06:12:18,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455387401] [2020-12-23 06:12:18,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:12:18,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 06:12:18,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171003070] [2020-12-23 06:12:18,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 06:12:18,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:12:18,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 06:12:18,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 06:12:18,480 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand 3 states. [2020-12-23 06:12:18,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:12:18,530 INFO L93 Difference]: Finished difference Result 82 states and 109 transitions. [2020-12-23 06:12:18,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 06:12:18,530 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-23 06:12:18,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:12:18,532 INFO L225 Difference]: With dead ends: 82 [2020-12-23 06:12:18,532 INFO L226 Difference]: Without dead ends: 78 [2020-12-23 06:12:18,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 06:12:18,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-23 06:12:18,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 53. [2020-12-23 06:12:18,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-23 06:12:18,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 72 transitions. [2020-12-23 06:12:18,547 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 72 transitions. Word has length 12 [2020-12-23 06:12:18,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:12:18,548 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 72 transitions. [2020-12-23 06:12:18,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 06:12:18,548 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 72 transitions. [2020-12-23 06:12:18,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 06:12:18,553 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:12:18,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:12:18,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 06:12:18,553 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:12:18,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:12:18,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1308032193, now seen corresponding path program 1 times [2020-12-23 06:12:18,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:12:18,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771137140] [2020-12-23 06:12:18,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:12:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:12:18,610 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:12:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:12:18,669 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:12:18,728 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 06:12:18,728 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 06:12:18,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 06:12:18,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:12:18 BoogieIcfgContainer [2020-12-23 06:12:18,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:12:18,825 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:12:18,825 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:12:18,826 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:12:18,827 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:12:17" (3/4) ... [2020-12-23 06:12:18,831 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 06:12:18,831 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:12:18,835 INFO L168 Benchmark]: Toolchain (without parser) took 2468.88 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 113.7 MB in the end (delta: -8.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:12:18,836 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 122.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:12:18,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.52 ms. Allocated memory is still 151.0 MB. Free memory was 105.3 MB in the beginning and 93.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:18,840 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.92 ms. Allocated memory is still 151.0 MB. Free memory was 93.3 MB in the beginning and 91.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:18,842 INFO L168 Benchmark]: Boogie Preprocessor took 117.28 ms. Allocated memory is still 151.0 MB. Free memory was 91.2 MB in the beginning and 132.0 MB in the end (delta: -40.7 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:18,843 INFO L168 Benchmark]: RCFGBuilder took 835.68 ms. Allocated memory is still 151.0 MB. Free memory was 131.6 MB in the beginning and 106.0 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:18,846 INFO L168 Benchmark]: TraceAbstraction took 1105.40 ms. Allocated memory is still 151.0 MB. Free memory was 105.7 MB in the beginning and 114.2 MB in the end (delta: -8.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:12:18,850 INFO L168 Benchmark]: Witness Printer took 6.28 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 113.7 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:12:18,857 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 122.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 336.52 ms. Allocated memory is still 151.0 MB. Free memory was 105.3 MB in the beginning and 93.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 55.92 ms. Allocated memory is still 151.0 MB. Free memory was 93.3 MB in the beginning and 91.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 117.28 ms. Allocated memory is still 151.0 MB. Free memory was 91.2 MB in the beginning and 132.0 MB in the end (delta: -40.7 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 835.68 ms. Allocated memory is still 151.0 MB. Free memory was 131.6 MB in the beginning and 106.0 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1105.40 ms. Allocated memory is still 151.0 MB. Free memory was 105.7 MB in the beginning and 114.2 MB in the end (delta: -8.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 6.28 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 113.7 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 124]: 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 123, overapproximation of someUnaryDOUBLEoperation at line 21, overapproximation of someBinaryArithmeticFLOAToperation at line 52. Possible FailurePath: [L17-L36] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L119] float x = 0.0f; [L39] float y, hi, lo, c, t; [L40] __int32_t k = 0, xsb, sx; [L41] __uint32_t hx; VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L44] ieee_float_shape_type gf_u; [L45] gf_u.value = (x) [L46] EXPR gf_u.word [L46] (sx) = gf_u.word [L48] xsb = (sx >> 31) & 1 VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L49] hx = sx & 0x7fffffff VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, hx = sx & 0x7fffffff=2147483647, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L51] COND TRUE ((hx) > 0x7f800000L) [L52] return x + x; VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, hx = sx & 0x7fffffff=2147483647, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L120] float res = __ieee754_expf(x); [L123] COND TRUE res != 1.0f VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, hx = sx & 0x7fffffff=2147483647, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L124] reach_error() VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, hx = sx & 0x7fffffff=2147483647, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 171 SDtfs, 70 SDslu, 77 SDs, 0 SdLazy, 40 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=3, 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, 3 MinimizatonAttempts, 43 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 350 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...