/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-benchs/inv_Newton.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:01:22,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:01:22,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:01:22,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:01:22,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:01:22,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:01:22,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:01:22,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:01:22,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:01:22,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:01:22,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:01:22,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:01:22,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:01:22,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:01:22,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:01:22,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:01:22,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:01:22,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:01:22,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:01:22,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:01:22,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:01:22,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:01:22,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:01:22,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:01:22,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 16:01:22,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 16:01:22,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 16:01:22,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 16:01:22,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 16:01:22,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 16:01:22,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:01:22,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:01:22,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:01:22,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:01:22,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:01:22,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:01:22,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:01:22,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:01:22,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:01:22,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:01:22,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:01:22,604 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 16:01:22,650 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:01:22,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:01:22,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:01:22,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:01:22,655 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:01:22,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:01:22,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:01:22,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:01:22,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:01:22,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:01:22,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:01:22,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:01:22,658 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:01:22,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:01:22,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:01:22,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:01:22,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:01:22,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:01:22,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:01:22,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:01:22,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:01:22,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:01:22,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:01:22,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:01:22,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:01:22,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:01:23,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:01:23,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:01:23,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:01:23,148 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:01:23,149 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:01:23,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c [2021-01-06 16:01:23,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b7c820e2e/19b62140168548588a72b1bb394364c8/FLAG5addadfd6 [2021-01-06 16:01:23,970 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:01:23,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c [2021-01-06 16:01:23,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b7c820e2e/19b62140168548588a72b1bb394364c8/FLAG5addadfd6 [2021-01-06 16:01:24,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b7c820e2e/19b62140168548588a72b1bb394364c8 [2021-01-06 16:01:24,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:01:24,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:01:24,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:01:24,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:01:24,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:01:24,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:01:24" (1/1) ... [2021-01-06 16:01:24,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f0db86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:24, skipping insertion in model container [2021-01-06 16:01:24,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:01:24" (1/1) ... [2021-01-06 16:01:24,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:01:24,387 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__a~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~inv__A~0,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~inv__A_u~0,],d] left hand side expression in assignment: lhs: VariableLHS[~inv__exp~0,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~inv__xi_u~0,],d] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~inv__xi_u~0,],i] left hand side expression in assignment: lhs: VariableLHS[~inv__xi~0,] left hand side expression in assignment: lhs: VariableLHS[~inv__cond~0,] left hand side expression in assignment: lhs: VariableLHS[~inv__xsi~0,] left hand side expression in assignment: lhs: VariableLHS[~inv__temp~0,] left hand side expression in assignment: lhs: VariableLHS[~inv____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~inv__cond~0,] left hand side expression in assignment: lhs: VariableLHS[~inv__xi~0,] left hand side expression in assignment: lhs: VariableLHS[~inv____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_104~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__r~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__cond~0,] [2021-01-06 16:01:24,577 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-benchs/inv_Newton.c.p+cfa-reducer.c[2006,2019] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~0,] [2021-01-06 16:01:24,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:01:24,600 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__a~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~inv__A~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#inv__A_u~0,],base],StructAccessExpression[IdentifierExpression[~#inv__A_u~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~inv__exp~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#inv__xi_u~0,],base],StructAccessExpression[IdentifierExpression[~#inv__xi_u~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#inv__xi_u~0,],base],StructAccessExpression[IdentifierExpression[~#inv__xi_u~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~inv__xi~0,] left hand side expression in assignment: lhs: VariableLHS[~inv__cond~0,] left hand side expression in assignment: lhs: VariableLHS[~inv__xsi~0,] left hand side expression in assignment: lhs: VariableLHS[~inv__temp~0,] left hand side expression in assignment: lhs: VariableLHS[~inv____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~inv__cond~0,] left hand side expression in assignment: lhs: VariableLHS[~inv__xi~0,] left hand side expression in assignment: lhs: VariableLHS[~inv____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_104~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__r~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__cond~0,] [2021-01-06 16:01:24,628 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-benchs/inv_Newton.c.p+cfa-reducer.c[2006,2019] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~0,] [2021-01-06 16:01:24,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:01:24,648 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:01:24,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:24 WrapperNode [2021-01-06 16:01:24,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:01:24,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:01:24,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:01:24,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:01:24,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:24" (1/1) ... [2021-01-06 16:01:24,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:24" (1/1) ... [2021-01-06 16:01:24,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:01:24,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:01:24,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:01:24,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:01:24,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:24" (1/1) ... [2021-01-06 16:01:24,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:24" (1/1) ... [2021-01-06 16:01:24,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:24" (1/1) ... [2021-01-06 16:01:24,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:24" (1/1) ... [2021-01-06 16:01:24,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:24" (1/1) ... [2021-01-06 16:01:24,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:24" (1/1) ... [2021-01-06 16:01:24,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:24" (1/1) ... [2021-01-06 16:01:24,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:01:24,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:01:24,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:01:24,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:01:24,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:24" (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 16:01:24,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:01:24,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:01:24,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-01-06 16:01:24,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 16:01:24,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-01-06 16:01:24,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:01:24,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:01:24,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:01:24,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:01:25,274 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:01:25,275 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 16:01:25,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:01:25 BoogieIcfgContainer [2021-01-06 16:01:25,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:01:25,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:01:25,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:01:25,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:01:25,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:01:24" (1/3) ... [2021-01-06 16:01:25,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367a5270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:01:25, skipping insertion in model container [2021-01-06 16:01:25,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:24" (2/3) ... [2021-01-06 16:01:25,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367a5270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:01:25, skipping insertion in model container [2021-01-06 16:01:25,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:01:25" (3/3) ... [2021-01-06 16:01:25,287 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_Newton.c.p+cfa-reducer.c [2021-01-06 16:01:25,295 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:01:25,300 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:01:25,335 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:01:25,401 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:01:25,401 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:01:25,401 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:01:25,401 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:01:25,402 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:01:25,402 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:01:25,402 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:01:25,402 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:01:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2021-01-06 16:01:25,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 16:01:25,454 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:25,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:25,456 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:25,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:25,463 INFO L82 PathProgramCache]: Analyzing trace with hash -938930996, now seen corresponding path program 1 times [2021-01-06 16:01:25,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:25,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402526592] [2021-01-06 16:01:25,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:25,713 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 16:01:25,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402526592] [2021-01-06 16:01:25,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:01:25,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:01:25,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573946831] [2021-01-06 16:01:25,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:01:25,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:25,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:01:25,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:01:25,744 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2021-01-06 16:01:25,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:25,822 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2021-01-06 16:01:25,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 16:01:25,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 16:01:25,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:25,834 INFO L225 Difference]: With dead ends: 49 [2021-01-06 16:01:25,834 INFO L226 Difference]: Without dead ends: 33 [2021-01-06 16:01:25,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:01:25,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-01-06 16:01:25,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 19. [2021-01-06 16:01:25,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-01-06 16:01:25,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2021-01-06 16:01:25,895 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 11 [2021-01-06 16:01:25,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:25,896 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-01-06 16:01:25,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:01:25,897 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2021-01-06 16:01:25,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 16:01:25,898 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:25,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:25,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:01:25,899 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:25,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:25,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1250925041, now seen corresponding path program 1 times [2021-01-06 16:01:25,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:25,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416158735] [2021-01-06 16:01:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:01:26,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416158735] [2021-01-06 16:01:26,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:01:26,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 16:01:26,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645257280] [2021-01-06 16:01:26,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 16:01:26,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:26,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 16:01:26,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:01:26,015 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand 5 states. [2021-01-06 16:01:26,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:26,097 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2021-01-06 16:01:26,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 16:01:26,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-01-06 16:01:26,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:26,099 INFO L225 Difference]: With dead ends: 44 [2021-01-06 16:01:26,099 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 16:01:26,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 16:01:26,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 16:01:26,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 20. [2021-01-06 16:01:26,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 16:01:26,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2021-01-06 16:01:26,107 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 15 [2021-01-06 16:01:26,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:26,107 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2021-01-06 16:01:26,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 16:01:26,107 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2021-01-06 16:01:26,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 16:01:26,108 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:26,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:26,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:01:26,109 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:26,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:26,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1796523982, now seen corresponding path program 1 times [2021-01-06 16:01:26,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:26,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428309231] [2021-01-06 16:01:26,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:26,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 16:01:26,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428309231] [2021-01-06 16:01:26,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:01:26,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 16:01:26,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882278830] [2021-01-06 16:01:26,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 16:01:26,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:26,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 16:01:26,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:01:26,201 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand 5 states. [2021-01-06 16:01:26,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:26,281 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2021-01-06 16:01:26,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 16:01:26,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-01-06 16:01:26,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:26,287 INFO L225 Difference]: With dead ends: 41 [2021-01-06 16:01:26,288 INFO L226 Difference]: Without dead ends: 35 [2021-01-06 16:01:26,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 16:01:26,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-01-06 16:01:26,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20. [2021-01-06 16:01:26,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 16:01:26,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2021-01-06 16:01:26,295 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 15 [2021-01-06 16:01:26,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:26,295 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-01-06 16:01:26,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 16:01:26,296 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2021-01-06 16:01:26,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 16:01:26,296 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:26,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:26,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 16:01:26,297 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:26,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:26,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1813534643, now seen corresponding path program 1 times [2021-01-06 16:01:26,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:26,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132564192] [2021-01-06 16:01:26,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:01:26,323 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:01:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:01:26,345 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:01:26,374 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:01:26,374 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:01:26,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 16:01:26,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:01:26 BoogieIcfgContainer [2021-01-06 16:01:26,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:01:26,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:01:26,432 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:01:26,432 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:01:26,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:01:25" (3/4) ... [2021-01-06 16:01:26,436 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 16:01:26,436 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:01:26,440 INFO L168 Benchmark]: Toolchain (without parser) took 2090.73 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 110.6 MB in the end (delta: 15.8 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:26,441 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 125.8 MB. Free memory is still 80.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:01:26,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.78 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 115.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:26,446 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.67 ms. Allocated memory is still 152.0 MB. Free memory was 115.4 MB in the beginning and 113.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:26,447 INFO L168 Benchmark]: Boogie Preprocessor took 28.45 ms. Allocated memory is still 152.0 MB. Free memory was 113.8 MB in the beginning and 112.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:26,448 INFO L168 Benchmark]: RCFGBuilder took 555.69 ms. Allocated memory is still 152.0 MB. Free memory was 112.5 MB in the beginning and 124.3 MB in the end (delta: -11.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:26,455 INFO L168 Benchmark]: TraceAbstraction took 1151.57 ms. Allocated memory is still 152.0 MB. Free memory was 123.9 MB in the beginning and 111.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:26,456 INFO L168 Benchmark]: Witness Printer took 5.18 ms. Allocated memory is still 152.0 MB. Free memory was 111.1 MB in the beginning and 110.6 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:26,464 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 125.8 MB. Free memory is still 80.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 299.78 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 115.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.67 ms. Allocated memory is still 152.0 MB. Free memory was 115.4 MB in the beginning and 113.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.45 ms. Allocated memory is still 152.0 MB. Free memory was 113.8 MB in the beginning and 112.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 555.69 ms. Allocated memory is still 152.0 MB. Free memory was 112.5 MB in the beginning and 124.3 MB in the end (delta: -11.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1151.57 ms. Allocated memory is still 152.0 MB. Free memory was 123.9 MB in the beginning and 111.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Witness Printer took 5.18 ms. Allocated memory is still 152.0 MB. Free memory was 111.1 MB in the beginning and 110.6 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 45, overapproximation of someBinaryArithmeticDOUBLEoperation at line 53, overapproximation of someBinaryDOUBLEComparisonOperation at line 83, overapproximation of to_real at line 46. Possible FailurePath: [L1] int __return_main; [L17] double __return_104; VAL [__return_104=0, __return_main=0] [L20] double main__a; [L21] double main__r; [L22] main__a = __VERIFIER_nondet_double() [L23] int main____CPAchecker_TMP_0; VAL [__return_104=0, __return_main=0] [L24] COND TRUE main__a >= 20.0 VAL [__return_104=0, __return_main=0] [L26] COND TRUE main__a <= 30.0 [L28] main____CPAchecker_TMP_0 = 1 VAL [__return_104=0, __return_main=0] [L30] COND TRUE main____CPAchecker_TMP_0 != 0 [L33] double __tmp_1; [L34] __tmp_1 = main__a [L35] double inv__A; [L36] inv__A = __tmp_1 [L37] double inv__xi; [L38] double inv__xsi; [L39] double inv__temp; [L40] signed int inv__cond; [L41] signed int inv__exp; [L42] union double_int inv__A_u; [L43] union double_int inv__xi_u; [L44] inv__A_u.d = inv__A [L45] EXPR inv__A_u.i [L45] inv__exp = ((signed int)(((inv__A_u.i) & 2146435072) >> 20)) - 1023 [L46] inv__xi_u.d = 1 [L47] inv__xi_u.i = (1023 - inv__exp) << 20 [L48] EXPR inv__xi_u.d [L48] inv__xi = inv__xi_u.d [L49] inv__cond = 1 VAL [__return_104=0, __return_main=0] [L51] COND TRUE !(inv__cond == 0) [L53] inv__xsi = (2 * inv__xi) - ((inv__A * inv__xi) * inv__xi) [L54] inv__temp = inv__xsi - inv__xi [L55] int inv____CPAchecker_TMP_0; VAL [__return_104=0, __return_main=0] [L56] COND FALSE !(inv__temp > 1.0E-10) VAL [__return_104=0, __return_main=0] [L67] COND FALSE !(inv__temp < -1.0E-10) [L73] inv____CPAchecker_TMP_0 = 0 VAL [__return_104=0, __return_main=0] [L61] inv__cond = inv____CPAchecker_TMP_0 [L62] inv__xi = inv__xsi VAL [__return_104=0, __return_main=0] [L51] COND FALSE !(!(inv__cond == 0)) [L80] __return_104 = inv__xi [L81] main__r = __return_104 [L82] int main____CPAchecker_TMP_1; VAL [__return_104=2145386497, __return_main=0] [L83] COND FALSE !(main__r >= 0) VAL [__return_104=2145386497, __return_main=0] [L108] main____CPAchecker_TMP_1 = 0 VAL [__return_104=2145386497, __return_main=0] [L90] int __tmp_2; [L91] __tmp_2 = main____CPAchecker_TMP_1 [L92] int __VERIFIER_assert__cond; [L93] __VERIFIER_assert__cond = __tmp_2 VAL [__return_104=2145386497, __return_main=0] [L94] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_104=2145386497, __return_main=0] [L96] reach_error() VAL [__return_104=2145386497, __return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 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: 71 SDtfs, 83 SDslu, 149 SDs, 0 SdLazy, 44 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 3 MinimizatonAttempts, 46 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 766 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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...