/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/double_req_bl_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:05:48,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:05:48,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:05:48,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:05:48,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:05:48,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:05:48,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:05:48,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:05:48,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:05:48,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:05:48,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:05:48,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:05:48,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:05:48,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:05:48,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:05:48,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:05:48,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:05:48,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:05:48,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:05:48,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:05:48,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:05:48,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:05:48,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:05:48,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:05:48,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:05:48,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:05:48,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:05:48,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:05:48,736 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 16:05:48,787 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:05:48,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:05:48,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:05:48,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:05:48,791 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:05:48,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:05:48,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:05:48,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:05:48,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:05:48,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:05:48,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:05:48,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:05:48,794 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:05:48,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:05:48,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:05:48,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:05:48,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:05:48,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:05:48,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:05:48,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:05:48,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:05:48,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:05:48,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:05:48,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:05:48,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:05:48,797 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:05:49,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:05:49,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:05:49,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:05:49,200 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:05:49,200 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:05:49,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1092a.c [2021-01-06 16:05:49,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9f793dad7/eedffd0d1874448688a4064919a16806/FLAGfa2fd21c9 [2021-01-06 16:05:49,968 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:05:49,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1092a.c [2021-01-06 16:05:49,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9f793dad7/eedffd0d1874448688a4064919a16806/FLAGfa2fd21c9 [2021-01-06 16:05:50,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9f793dad7/eedffd0d1874448688a4064919a16806 [2021-01-06 16:05:50,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:05:50,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:05:50,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:05:50,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:05:50,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:05:50,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:05:50" (1/1) ... [2021-01-06 16:05:50,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db9268d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:50, skipping insertion in model container [2021-01-06 16:05:50,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:05:50" (1/1) ... [2021-01-06 16:05:50,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:05:50,397 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: StructLHS[VariableLHS[~ew_u~0,],value] left hand side expression in assignment: lhs: VariableLHS[~i0~0,] left hand side expression in assignment: lhs: VariableLHS[~i1~0,] left hand side expression in assignment: lhs: VariableLHS[~j0~0,] left hand side expression in assignment: lhs: VariableLHS[~i0~0,] left hand side expression in assignment: lhs: VariableLHS[~i1~0,] left hand side expression in assignment: lhs: VariableLHS[~i0~0,] left hand side expression in assignment: lhs: VariableLHS[~i1~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i1~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~i1~0,] left hand side expression in assignment: lhs: StructLHS[StructLHS[VariableLHS[~iw_u~0,],parts],msw] left hand side expression in assignment: lhs: StructLHS[StructLHS[VariableLHS[~iw_u~0,],parts],lsw] left hand side expression in assignment: lhs: VariableLHS[~x,] [2021-01-06 16:05:50,611 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/double_req_bl_1092a.c[2110,2123] [2021-01-06 16:05:50,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:05:50,625 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#ew_u~0,],base],StructAccessExpression[IdentifierExpression[~#ew_u~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~i0~0,] left hand side expression in assignment: lhs: VariableLHS[~i1~0,] left hand side expression in assignment: lhs: VariableLHS[~j0~0,] left hand side expression in assignment: lhs: VariableLHS[~i0~0,] left hand side expression in assignment: lhs: VariableLHS[~i1~0,] left hand side expression in assignment: lhs: VariableLHS[~i0~0,] left hand side expression in assignment: lhs: VariableLHS[~i1~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i1~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~i1~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#iw_u~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~#iw_u~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#iw_u~0,],base],StructAccessExpression[IdentifierExpression[~#iw_u~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~x,] [2021-01-06 16:05:50,660 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/double_req_bl_1092a.c[2110,2123] [2021-01-06 16:05:50,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:05:50,681 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:05:50,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:50 WrapperNode [2021-01-06 16:05:50,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:05:50,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:05:50,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:05:50,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:05:50,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:50" (1/1) ... [2021-01-06 16:05:50,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:50" (1/1) ... [2021-01-06 16:05:50,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:05:50,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:05:50,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:05:50,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:05:50,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:50" (1/1) ... [2021-01-06 16:05:50,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:50" (1/1) ... [2021-01-06 16:05:50,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:50" (1/1) ... [2021-01-06 16:05:50,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:50" (1/1) ... [2021-01-06 16:05:50,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:50" (1/1) ... [2021-01-06 16:05:50,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:50" (1/1) ... [2021-01-06 16:05:50,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:50" (1/1) ... [2021-01-06 16:05:50,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:05:50,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:05:50,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:05:50,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:05:50,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:50" (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 16:05:50,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:05:50,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:05:50,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-01-06 16:05:50,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 16:05:50,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-01-06 16:05:50,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:05:50,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:05:50,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:05:50,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:05:51,535 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:05:51,536 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-06 16:05:51,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:05:51 BoogieIcfgContainer [2021-01-06 16:05:51,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:05:51,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:05:51,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:05:51,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:05:51,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:05:50" (1/3) ... [2021-01-06 16:05:51,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560da47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:05:51, skipping insertion in model container [2021-01-06 16:05:51,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:05:50" (2/3) ... [2021-01-06 16:05:51,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560da47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:05:51, skipping insertion in model container [2021-01-06 16:05:51,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:05:51" (3/3) ... [2021-01-06 16:05:51,548 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2021-01-06 16:05:51,555 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:05:51,561 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:05:51,584 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:05:51,612 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:05:51,612 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:05:51,612 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:05:51,613 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:05:51,613 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:05:51,613 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:05:51,613 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:05:51,613 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:05:51,630 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2021-01-06 16:05:51,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 16:05:51,636 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:05:51,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:05:51,638 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:05:51,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:05:51,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1046119076, now seen corresponding path program 1 times [2021-01-06 16:05:51,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:05:51,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879323100] [2021-01-06 16:05:51,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:05:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:05:51,812 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 16:05:51,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879323100] [2021-01-06 16:05:51,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:05:51,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:05:51,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215418784] [2021-01-06 16:05:51,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:05:51,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:05:51,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:05:51,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:05:51,838 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2021-01-06 16:05:51,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:05:51,860 INFO L93 Difference]: Finished difference Result 64 states and 102 transitions. [2021-01-06 16:05:51,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:05:51,862 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 16:05:51,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:05:51,872 INFO L225 Difference]: With dead ends: 64 [2021-01-06 16:05:51,873 INFO L226 Difference]: Without dead ends: 30 [2021-01-06 16:05:51,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:05:51,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-01-06 16:05:51,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-01-06 16:05:51,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-01-06 16:05:51,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2021-01-06 16:05:51,915 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 10 [2021-01-06 16:05:51,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:05:51,916 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2021-01-06 16:05:51,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:05:51,916 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2021-01-06 16:05:51,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 16:05:51,917 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:05:51,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:05:51,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:05:51,918 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:05:51,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:05:51,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1289188121, now seen corresponding path program 1 times [2021-01-06 16:05:51,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:05:51,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548588939] [2021-01-06 16:05:51,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:05:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:05:52,017 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:05:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:05:52,069 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:05:52,095 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:05:52,096 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:05:52,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:05:52,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:05:52 BoogieIcfgContainer [2021-01-06 16:05:52,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:05:52,135 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:05:52,136 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:05:52,136 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:05:52,136 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:05:51" (3/4) ... [2021-01-06 16:05:52,140 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 16:05:52,140 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:05:52,145 INFO L168 Benchmark]: Toolchain (without parser) took 1791.76 ms. Allocated memory is still 162.5 MB. Free memory was 137.7 MB in the beginning and 105.0 MB in the end (delta: 32.7 MB). Peak memory consumption was 33.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:05:52,147 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 162.5 MB. Free memory is still 136.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:05:52,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.55 ms. Allocated memory is still 162.5 MB. Free memory was 137.5 MB in the beginning and 126.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:05:52,150 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.75 ms. Allocated memory is still 162.5 MB. Free memory was 126.2 MB in the beginning and 124.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:05:52,152 INFO L168 Benchmark]: Boogie Preprocessor took 79.29 ms. Allocated memory is still 162.5 MB. Free memory was 124.2 MB in the beginning and 122.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:05:52,153 INFO L168 Benchmark]: RCFGBuilder took 715.49 ms. Allocated memory is still 162.5 MB. Free memory was 122.3 MB in the beginning and 131.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 12.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:05:52,154 INFO L168 Benchmark]: TraceAbstraction took 594.58 ms. Allocated memory is still 162.5 MB. Free memory was 131.2 MB in the beginning and 105.5 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2021-01-06 16:05:52,156 INFO L168 Benchmark]: Witness Printer took 4.73 ms. Allocated memory is still 162.5 MB. Free memory was 105.5 MB in the beginning and 105.0 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:05:52,172 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 162.5 MB. Free memory is still 136.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 328.55 ms. Allocated memory is still 162.5 MB. Free memory was 137.5 MB in the beginning and 126.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 55.75 ms. Allocated memory is still 162.5 MB. Free memory was 126.2 MB in the beginning and 124.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.29 ms. Allocated memory is still 162.5 MB. Free memory was 124.2 MB in the beginning and 122.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 715.49 ms. Allocated memory is still 162.5 MB. Free memory was 122.3 MB in the beginning and 131.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 12.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 594.58 ms. Allocated memory is still 162.5 MB. Free memory was 131.2 MB in the beginning and 105.5 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * Witness Printer took 4.73 ms. Allocated memory is still 162.5 MB. Free memory was 105.5 MB in the beginning and 105.0 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: 98]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftRight at line 43, overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 93, overapproximation of bitwiseAnd at line 44, overapproximation of someBinaryDOUBLEComparisonOperation at line 97. Possible FailurePath: [L19] static const double huge_ceil = 1.0e300; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L93] double x = -0.0; [L22] __int32_t i0, i1, j0; [L23] __uint32_t i, j; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L31] COND TRUE j0 < 20 VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L32] COND FALSE !(j0 < 0) [L43] i = (0x000fffff) >> j0 VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L44] COND TRUE ((i0 & i) | i1) == 0 [L45] return x; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L94] double res = ceil_double(x); [L97] COND TRUE res != x VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L98] reach_error() VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...