/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/sqrt_poly2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:55:27,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:55:27,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:55:27,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:55:27,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:55:27,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:55:27,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:55:27,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:55:27,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:55:27,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:55:27,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:55:27,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:55:27,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:55:27,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:55:27,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:55:27,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:55:27,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:55:27,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:55:27,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:55:27,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:55:27,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:55:27,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:55:27,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:55:27,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:55:27,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:55:27,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:55:27,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:55:27,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:55:27,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:55:27,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:55:27,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:55:27,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:55:27,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:55:27,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:55:27,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:55:27,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:55:27,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:55:27,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:55:27,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:55:27,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:55:27,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:55:27,138 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 15:55:27,175 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:55:27,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:55:27,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:55:27,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:55:27,178 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:55:27,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:55:27,178 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:55:27,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:55:27,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:55:27,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:55:27,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:55:27,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:55:27,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:55:27,179 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:55:27,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:55:27,180 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:55:27,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:55:27,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:55:27,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:55:27,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:55:27,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:55:27,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:55:27,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:55:27,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:55:27,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:55:27,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:55:27,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:55:27,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:55:27,182 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:55:27,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 15:55:27,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:55:27,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:55:27,653 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:55:27,655 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:55:27,656 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:55:27,657 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2020-09-24 15:55:27,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a2893d5c/f1b25f5d04524bb6b6e60885a9ceb75f/FLAG53b8e0c30 [2020-09-24 15:55:28,314 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:55:28,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2020-09-24 15:55:28,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a2893d5c/f1b25f5d04524bb6b6e60885a9ceb75f/FLAG53b8e0c30 [2020-09-24 15:55:28,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a2893d5c/f1b25f5d04524bb6b6e60885a9ceb75f [2020-09-24 15:55:28,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:55:28,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:55:28,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:55:28,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:55:28,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:55:28,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:55:28" (1/1) ... [2020-09-24 15:55:28,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44406637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:28, skipping insertion in model container [2020-09-24 15:55:28,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:55:28" (1/1) ... [2020-09-24 15:55:28,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:55:28,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:55:28,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:55:28,976 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:55:29,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:55:29,117 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:55:29,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:29 WrapperNode [2020-09-24 15:55:29,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:55:29,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:55:29,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:55:29,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:55:29,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:29" (1/1) ... [2020-09-24 15:55:29,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:29" (1/1) ... [2020-09-24 15:55:29,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:29" (1/1) ... [2020-09-24 15:55:29,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:29" (1/1) ... [2020-09-24 15:55:29,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:29" (1/1) ... [2020-09-24 15:55:29,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:29" (1/1) ... [2020-09-24 15:55:29,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:29" (1/1) ... [2020-09-24 15:55:29,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:55:29,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:55:29,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:55:29,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:55:29,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:55:29,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:55:29,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:55:29,237 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 15:55:29,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 15:55:29,238 INFO L138 BoogieDeclarations]: Found implementation of procedure sqrt_custom [2020-09-24 15:55:29,238 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:55:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:55:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 15:55:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 15:55:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 15:55:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 15:55:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure sqrt_custom [2020-09-24 15:55:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 15:55:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 15:55:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 15:55:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 15:55:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 15:55:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 15:55:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:55:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:55:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:55:29,608 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:55:29,608 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 15:55:29,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:55:29 BoogieIcfgContainer [2020-09-24 15:55:29,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:55:29,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:55:29,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:55:29,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:55:29,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:55:28" (1/3) ... [2020-09-24 15:55:29,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cbcefdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:55:29, skipping insertion in model container [2020-09-24 15:55:29,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:29" (2/3) ... [2020-09-24 15:55:29,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cbcefdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:55:29, skipping insertion in model container [2020-09-24 15:55:29,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:55:29" (3/3) ... [2020-09-24 15:55:29,624 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2020-09-24 15:55:29,636 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:55:29,646 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:55:29,669 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:55:29,696 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:55:29,697 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:55:29,697 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:55:29,697 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:55:29,697 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:55:29,697 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:55:29,697 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:55:29,697 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:55:29,719 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-09-24 15:55:29,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 15:55:29,729 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:55:29,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:55:29,731 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:55:29,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:55:29,737 INFO L82 PathProgramCache]: Analyzing trace with hash 284093711, now seen corresponding path program 1 times [2020-09-24 15:55:29,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:55:29,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416634258] [2020-09-24 15:55:29,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:55:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 15:55:30,013 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 15:55:30,014 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 15:55:30,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:55:30,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:55:30 BoogieIcfgContainer [2020-09-24 15:55:30,040 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:55:30,044 INFO L168 Benchmark]: Toolchain (without parser) took 1386.91 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 104.8 MB in the beginning and 142.7 MB in the end (delta: -37.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2020-09-24 15:55:30,045 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 15:55:30,046 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.89 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 104.2 MB in the beginning and 183.4 MB in the end (delta: -79.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-09-24 15:55:30,047 INFO L168 Benchmark]: Boogie Preprocessor took 46.72 ms. Allocated memory is still 204.5 MB. Free memory was 183.4 MB in the beginning and 181.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-24 15:55:30,048 INFO L168 Benchmark]: RCFGBuilder took 449.07 ms. Allocated memory is still 204.5 MB. Free memory was 181.1 MB in the beginning and 159.7 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-09-24 15:55:30,049 INFO L168 Benchmark]: TraceAbstraction took 424.83 ms. Allocated memory is still 204.5 MB. Free memory was 159.0 MB in the beginning and 142.7 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2020-09-24 15:55:30,054 INFO L336 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 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 453.89 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 104.2 MB in the beginning and 183.4 MB in the end (delta: -79.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.72 ms. Allocated memory is still 204.5 MB. Free memory was 183.4 MB in the beginning and 181.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 449.07 ms. Allocated memory is still 204.5 MB. Free memory was 181.1 MB in the beginning and 159.7 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 424.83 ms. Allocated memory is still 204.5 MB. Free memory was 159.0 MB in the beginning and 142.7 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 36, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 35, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of someBinaryDOUBLEComparisonOperation at line 63. Possible FailurePath: [L15] double C0 = 1.414213538; [L16] double C1 = 0.229761391; [L17] double C2 = 1.296735525; [L18] double C3 = -0.901098370; [L19] double C4 = 0.493553400; [L20] double C5 = -0.118958666; [L56] double x,y; [L58] x = __VERIFIER_nondet_double() [L59] CALL assume_abort_if_not(x >= 1. && x <= 1e10) [L10] COND FALSE !(!cond) [L59] RET assume_abort_if_not(x >= 1. && x <= 1e10) [L61] CALL, EXPR sqrt_custom(x) [L29] union u x; [L30] double r; [L31] int exp; [L33] x.d = a [L35] EXPR x.i[0] [L35] exp = (x.i[0] & 0x7FF00000) >> 20 [L36] EXPR x.i[0] [L36] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L37] EXPR x.d [L37] r = x.d * 0.5 [L39] r = C1+C2+(C3+(C4+C5*r)*r)*r [L41] COND FALSE !(exp % 2 == 0) [L45] r = r * C0 [L48] x.i[0] = (exp/2 + 511) << 20 [L49] EXPR x.d [L49] r = r * x.d [L51] return r; [L51] return r; [L61] RET, EXPR sqrt_custom(x) [L61] y = sqrt_custom(x) [L63] CALL __VERIFIER_assert(y >= 0. && y <= 1e6) [L12] COND TRUE !(cond) [L12] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...