/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-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:01:20,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:01:20,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:01:20,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:01:20,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:01:20,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:01:20,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:01:20,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:01:20,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:01:20,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:01:20,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:01:20,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:01:20,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:01:20,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:01:20,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:01:20,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:01:20,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:01:20,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:01:20,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:01:20,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:01:20,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:01:20,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:01:20,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:01:20,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:01:20,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:01:20,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:01:20,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:01:20,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:01:20,737 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 16:01:20,786 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:01:20,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:01:20,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:01:20,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:01:20,791 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:01:20,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:01:20,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:01:20,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:01:20,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:01:20,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:01:20,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:01:20,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:01:20,794 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:01:20,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:01:20,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:01:20,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:01:20,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:01:20,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:01:20,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:01:20,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:01:20,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:01:20,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:01:20,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:01:20,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:01:20,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:01:20,797 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:01:21,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:01:21,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:01:21,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:01:21,233 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:01:21,234 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:01:21,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_Newton-1.c [2021-01-06 16:01:21,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a9b34dbe9/8a02b41b60d84ac79f0496bacdfb2a82/FLAG14a94831b [2021-01-06 16:01:22,009 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:01:22,009 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_Newton-1.c [2021-01-06 16:01:22,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a9b34dbe9/8a02b41b60d84ac79f0496bacdfb2a82/FLAG14a94831b [2021-01-06 16:01:22,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a9b34dbe9/8a02b41b60d84ac79f0496bacdfb2a82 [2021-01-06 16:01:22,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:01:22,340 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:01:22,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:01:22,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:01:22,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:01:22,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:01:22" (1/1) ... [2021-01-06 16:01:22,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@295d94c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:22, skipping insertion in model container [2021-01-06 16:01:22,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:01:22" (1/1) ... [2021-01-06 16:01:22,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:01:22,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 16:01:22,543 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-1.c[598,611] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~A_u~0,],d] left hand side expression in assignment: lhs: VariableLHS[~exp~0,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~xi_u~0,],d] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~xi_u~0,],i] left hand side expression in assignment: lhs: VariableLHS[~xi~0,] left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~xsi~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~xi~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2021-01-06 16:01:22,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:01:22,580 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 16:01:22,596 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-1.c[598,611] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#A_u~0,],base],StructAccessExpression[IdentifierExpression[~#A_u~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~exp~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#xi_u~0,],base],StructAccessExpression[IdentifierExpression[~#xi_u~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#xi_u~0,],base],StructAccessExpression[IdentifierExpression[~#xi_u~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~xi~0,] left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~xsi~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~xi~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2021-01-06 16:01:22,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:01:22,627 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:01:22,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:22 WrapperNode [2021-01-06 16:01:22,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:01:22,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:01:22,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:01:22,630 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:01:22,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:22" (1/1) ... [2021-01-06 16:01:22,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:22" (1/1) ... [2021-01-06 16:01:22,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:01:22,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:01:22,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:01:22,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:01:22,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:22" (1/1) ... [2021-01-06 16:01:22,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:22" (1/1) ... [2021-01-06 16:01:22,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:22" (1/1) ... [2021-01-06 16:01:22,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:22" (1/1) ... [2021-01-06 16:01:22,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:22" (1/1) ... [2021-01-06 16:01:22,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:22" (1/1) ... [2021-01-06 16:01:22,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:22" (1/1) ... [2021-01-06 16:01:22,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:01:22,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:01:22,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:01:22,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:01:22,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:22" (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 16:01:22,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:01:22,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:01:22,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-01-06 16:01:22,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 16:01:22,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-01-06 16:01:22,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:01:22,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:01:22,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:01:22,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:01:23,329 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:01:23,329 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-01-06 16:01:23,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:01:23 BoogieIcfgContainer [2021-01-06 16:01:23,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:01:23,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:01:23,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:01:23,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:01:23,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:01:22" (1/3) ... [2021-01-06 16:01:23,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93ff6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:01:23, skipping insertion in model container [2021-01-06 16:01:23,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:22" (2/3) ... [2021-01-06 16:01:23,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93ff6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:01:23, skipping insertion in model container [2021-01-06 16:01:23,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:01:23" (3/3) ... [2021-01-06 16:01:23,359 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_Newton-1.c [2021-01-06 16:01:23,365 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:01:23,374 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:01:23,395 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:01:23,422 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:01:23,423 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:01:23,423 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:01:23,423 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:01:23,423 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:01:23,423 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:01:23,424 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:01:23,424 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:01:23,440 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2021-01-06 16:01:23,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 16:01:23,446 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:23,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:23,447 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:23,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:23,455 INFO L82 PathProgramCache]: Analyzing trace with hash -590190995, now seen corresponding path program 1 times [2021-01-06 16:01:23,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:23,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300949316] [2021-01-06 16:01:23,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:23,664 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 16:01:23,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300949316] [2021-01-06 16:01:23,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:01:23,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:01:23,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102994447] [2021-01-06 16:01:23,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:01:23,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:23,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:01:23,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:01:23,699 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2021-01-06 16:01:23,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:23,720 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2021-01-06 16:01:23,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:01:23,722 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2021-01-06 16:01:23,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:23,746 INFO L225 Difference]: With dead ends: 25 [2021-01-06 16:01:23,746 INFO L226 Difference]: Without dead ends: 10 [2021-01-06 16:01:23,750 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 16:01:23,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-01-06 16:01:23,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-01-06 16:01:23,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-01-06 16:01:23,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-01-06 16:01:23,791 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2021-01-06 16:01:23,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:23,792 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-01-06 16:01:23,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:01:23,793 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-01-06 16:01:23,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 16:01:23,794 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:23,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:23,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:01:23,796 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:23,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:23,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1184816367, now seen corresponding path program 1 times [2021-01-06 16:01:23,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:23,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43774074] [2021-01-06 16:01:23,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:23,908 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 16:01:23,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43774074] [2021-01-06 16:01:23,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:01:23,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 16:01:23,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366416848] [2021-01-06 16:01:23,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:01:23,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:23,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:01:23,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:01:23,912 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2021-01-06 16:01:23,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:23,927 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-01-06 16:01:23,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:01:23,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2021-01-06 16:01:23,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:23,929 INFO L225 Difference]: With dead ends: 16 [2021-01-06 16:01:23,929 INFO L226 Difference]: Without dead ends: 11 [2021-01-06 16:01:23,930 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 [2021-01-06 16:01:23,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-01-06 16:01:23,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-01-06 16:01:23,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-01-06 16:01:23,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-01-06 16:01:23,934 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2021-01-06 16:01:23,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:23,935 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-01-06 16:01:23,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:01:23,935 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-01-06 16:01:23,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 16:01:23,936 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:23,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:23,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:01:23,937 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:23,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:23,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1873743609, now seen corresponding path program 1 times [2021-01-06 16:01:23,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:23,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562895418] [2021-01-06 16:01:23,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:01:23,994 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:01:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:01:24,078 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:01:24,133 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:01:24,133 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:01:24,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 16:01:24,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:01:24 BoogieIcfgContainer [2021-01-06 16:01:24,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:01:24,183 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:01:24,183 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:01:24,184 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:01:24,184 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:01:23" (3/4) ... [2021-01-06 16:01:24,191 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 16:01:24,191 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:01:24,197 INFO L168 Benchmark]: Toolchain (without parser) took 1853.43 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 102.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:24,201 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:01:24,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.04 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:24,204 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.58 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:24,206 INFO L168 Benchmark]: Boogie Preprocessor took 30.89 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 113.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:24,215 INFO L168 Benchmark]: RCFGBuilder took 626.55 ms. Allocated memory is still 151.0 MB. Free memory was 113.0 MB in the beginning and 132.7 MB in the end (delta: -19.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:24,216 INFO L168 Benchmark]: TraceAbstraction took 830.51 ms. Allocated memory is still 151.0 MB. Free memory was 132.2 MB in the beginning and 102.8 MB in the end (delta: 29.4 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:24,216 INFO L168 Benchmark]: Witness Printer took 7.98 ms. Allocated memory is still 151.0 MB. Free memory is still 102.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:01:24,228 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 285.04 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.58 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.89 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 113.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 626.55 ms. Allocated memory is still 151.0 MB. Free memory was 113.0 MB in the beginning and 132.7 MB in the end (delta: -19.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 830.51 ms. Allocated memory is still 151.0 MB. Free memory was 132.2 MB in the beginning and 102.8 MB in the end (delta: 29.4 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * Witness Printer took 7.98 ms. Allocated memory is still 151.0 MB. Free memory is still 102.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 16]: 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 30, overapproximation of someBinaryArithmeticDOUBLEoperation at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of to_real at line 31. Possible FailurePath: [L46] double a,r; [L48] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L26] double xi, xsi, temp; [L27] signed int cond, exp; [L28] union double_int A_u, xi_u; [L29] A_u.d = A [L30] EXPR A_u.i [L30] exp = (signed int) ((A_u.i & 0x7FF0000000000000) >> 52) - 1023 [L31] xi_u.d = 1 [L32] xi_u.i = (((long long)(1023-exp)) << 52) [L33] EXPR xi_u.d [L33] xi = xi_u.d [L34] cond = 1 [L35] COND TRUE \read(cond) [L36] xsi = 2*xi-A*xi*xi [L37] temp = xsi-xi [L38] cond = ((temp > 1e-10) || (temp < -1e-10)) [L39] xi = xsi [L35] COND FALSE !(\read(cond)) [L41] return xi; [L41] return xi; [L41] return xi; [L51] r = inv(a) [L16] COND TRUE !(cond) [L16] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 0 SDslu, 7 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...