/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 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 17:00:16,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:00:16,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:00:16,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:00:16,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:00:16,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:00:16,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:00:16,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:00:16,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:00:16,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:00:16,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:00:16,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:00:16,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:00:16,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:00:16,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:00:16,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:00:16,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:00:16,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:00:16,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:00:16,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:00:16,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:00:16,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:00:16,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:00:16,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:00:16,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:00:16,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:00:16,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:00:16,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:00:16,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:00:16,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:00:16,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:00:16,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:00:16,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:00:16,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:00:16,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:00:16,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:00:16,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:00:16,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:00:16,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:00:16,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:00:16,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:00:16,270 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 17:00:16,310 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:00:16,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:00:16,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:00:16,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:00:16,312 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:00:16,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:00:16,313 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:00:16,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:00:16,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:00:16,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:00:16,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:00:16,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:00:16,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:00:16,314 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:00:16,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:00:16,315 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:00:16,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:00:16,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:00:16,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:00:16,316 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:00:16,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:00:16,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:00:16,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:00:16,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:00:16,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:00:16,317 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:00:16,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:00:16,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:00:16,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:00:16,318 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;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;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;log-additional-information=true; [2020-09-24 17:00:16,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:00:16,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:00:16,822 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:00:16,823 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:00:16,824 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:00:16,826 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2020-09-24 17:00:16,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17de0a1fc/ab7b3810223d47859365141d13d7e31c/FLAGebec0fd71 [2020-09-24 17:00:17,488 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:00:17,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2020-09-24 17:00:17,499 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17de0a1fc/ab7b3810223d47859365141d13d7e31c/FLAGebec0fd71 [2020-09-24 17:00:17,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17de0a1fc/ab7b3810223d47859365141d13d7e31c [2020-09-24 17:00:17,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:00:17,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:00:17,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:00:17,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:00:17,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:00:17,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:00:17" (1/1) ... [2020-09-24 17:00:17,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:00:17, skipping insertion in model container [2020-09-24 17:00:17,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:00:17" (1/1) ... [2020-09-24 17:00:17,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:00:17,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:00:18,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:00:18,133 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:00:18,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:00:18,283 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:00:18,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:00:18 WrapperNode [2020-09-24 17:00:18,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:00:18,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:00:18,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:00:18,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:00:18,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:00:18" (1/1) ... [2020-09-24 17:00:18,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:00:18" (1/1) ... [2020-09-24 17:00:18,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:00:18" (1/1) ... [2020-09-24 17:00:18,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:00:18" (1/1) ... [2020-09-24 17:00:18,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:00:18" (1/1) ... [2020-09-24 17:00:18,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:00:18" (1/1) ... [2020-09-24 17:00:18,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:00:18" (1/1) ... [2020-09-24 17:00:18,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:00:18,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:00:18,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:00:18,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:00:18,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:00:18" (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 17:00:18,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:00:18,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:00:18,402 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 17:00:18,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 17:00:18,403 INFO L138 BoogieDeclarations]: Found implementation of procedure sqrt_custom [2020-09-24 17:00:18,403 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:00:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:00:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 17:00:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 17:00:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 17:00:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 17:00:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure sqrt_custom [2020-09-24 17:00:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 17:00:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 17:00:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:00:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:00:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 17:00:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:00:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:00:18,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:00:18,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:00:18,825 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:00:18,825 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 17:00:18,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:00:18 BoogieIcfgContainer [2020-09-24 17:00:18,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:00:18,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:00:18,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:00:18,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:00:18,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:00:17" (1/3) ... [2020-09-24 17:00:18,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577dc4de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:00:18, skipping insertion in model container [2020-09-24 17:00:18,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:00:18" (2/3) ... [2020-09-24 17:00:18,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577dc4de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:00:18, skipping insertion in model container [2020-09-24 17:00:18,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:00:18" (3/3) ... [2020-09-24 17:00:18,842 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2020-09-24 17:00:18,852 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:00:18,862 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:00:18,887 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:00:18,921 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:00:18,921 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:00:18,922 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:00:18,922 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:00:18,922 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:00:18,922 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:00:18,922 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:00:18,922 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:00:18,950 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-09-24 17:00:18,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 17:00:18,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:00:18,962 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 17:00:18,963 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:00:18,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:00:18,971 INFO L82 PathProgramCache]: Analyzing trace with hash 284093711, now seen corresponding path program 1 times [2020-09-24 17:00:18,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:00:18,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584574856] [2020-09-24 17:00:18,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:00:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 17:00:19,284 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 17:00:19,286 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 17:00:19,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:00:19,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:00:19 BoogieIcfgContainer [2020-09-24 17:00:19,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:00:19,321 INFO L168 Benchmark]: Toolchain (without parser) took 1474.88 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 103.4 MB in the beginning and 142.0 MB in the end (delta: -38.6 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2020-09-24 17:00:19,322 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 148.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 17:00:19,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 436.40 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 102.7 MB in the beginning and 182.8 MB in the end (delta: -80.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-09-24 17:00:19,324 INFO L168 Benchmark]: Boogie Preprocessor took 47.30 ms. Allocated memory is still 203.9 MB. Free memory was 182.8 MB in the beginning and 180.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-24 17:00:19,325 INFO L168 Benchmark]: RCFGBuilder took 497.81 ms. Allocated memory is still 203.9 MB. Free memory was 180.5 MB in the beginning and 159.4 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-09-24 17:00:19,326 INFO L168 Benchmark]: TraceAbstraction took 483.94 ms. Allocated memory is still 203.9 MB. Free memory was 158.8 MB in the beginning and 142.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-09-24 17:00:19,330 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 148.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 436.40 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 102.7 MB in the beginning and 182.8 MB in the end (delta: -80.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.30 ms. Allocated memory is still 203.9 MB. Free memory was 182.8 MB in the beginning and 180.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 497.81 ms. Allocated memory is still 203.9 MB. Free memory was 180.5 MB in the beginning and 159.4 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 483.94 ms. Allocated memory is still 203.9 MB. Free memory was 158.8 MB in the beginning and 142.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 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...