/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-benchs/sqrt_poly2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:10:01,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:10:01,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:10:01,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:10:01,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:10:01,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:10:01,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:10:01,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:10:01,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:10:01,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:10:01,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:10:01,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:10:01,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:10:01,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:10:01,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:10:01,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:10:01,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:10:01,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:10:01,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:10:01,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:10:01,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:10:01,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:10:01,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:10:01,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:10:01,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 16:10:01,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 16:10:01,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 16:10:01,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 16:10:01,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 16:10:01,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 16:10:01,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 16:10:01,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 16:10:01,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 16:10:01,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 16:10:01,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 16:10:01,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 16:10:01,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 16:10:01,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 16:10:01,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:10:01,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:10:01,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:10:01,713 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:10:01,725 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:10:01,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:10:01,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:10:01,727 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:10:01,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:10:01,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:10:01,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:10:01,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:10:01,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:10:01,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:10:01,728 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:10:01,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:10:01,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:10:01,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:10:01,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:10:01,729 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:10:01,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:10:01,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:10:01,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:10:01,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:10:01,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:10:01,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:10:01,731 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:10:02,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:10:02,205 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:10:02,210 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:10:02,212 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:10:02,212 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:10:02,213 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2020-09-04 16:10:02,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7936f5220/df90dfe6c99241de864ff9596f78b077/FLAGc57cd3937 [2020-09-04 16:10:02,809 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:10:02,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/sqrt_poly2.c [2020-09-04 16:10:02,819 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7936f5220/df90dfe6c99241de864ff9596f78b077/FLAGc57cd3937 [2020-09-04 16:10:03,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7936f5220/df90dfe6c99241de864ff9596f78b077 [2020-09-04 16:10:03,178 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:10:03,181 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:10:03,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:10:03,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:10:03,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:10:03,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:10:03" (1/1) ... [2020-09-04 16:10:03,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1381c6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:03, skipping insertion in model container [2020-09-04 16:10:03,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:10:03" (1/1) ... [2020-09-04 16:10:03,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:10:03,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:10:03,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:10:03,470 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:10:03,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:10:03,625 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:10:03,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:03 WrapperNode [2020-09-04 16:10:03,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:10:03,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:10:03,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:10:03,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:10:03,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:03" (1/1) ... [2020-09-04 16:10:03,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:03" (1/1) ... [2020-09-04 16:10:03,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:03" (1/1) ... [2020-09-04 16:10:03,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:03" (1/1) ... [2020-09-04 16:10:03,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:03" (1/1) ... [2020-09-04 16:10:03,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:03" (1/1) ... [2020-09-04 16:10:03,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:03" (1/1) ... [2020-09-04 16:10:03,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:10:03,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:10:03,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:10:03,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:10:03,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:03" (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 [2020-09-04 16:10:03,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:10:03,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:10:03,770 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 16:10:03,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 16:10:03,771 INFO L138 BoogieDeclarations]: Found implementation of procedure sqrt_custom [2020-09-04 16:10:03,771 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:10:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:10:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-04 16:10:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 16:10:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 16:10:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 16:10:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure sqrt_custom [2020-09-04 16:10:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:10:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 16:10:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:10:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:10:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 16:10:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:10:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:10:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:10:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:10:04,153 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:10:04,153 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 16:10:04,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:10:04 BoogieIcfgContainer [2020-09-04 16:10:04,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:10:04,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:10:04,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:10:04,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:10:04,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:10:03" (1/3) ... [2020-09-04 16:10:04,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2e8336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:10:04, skipping insertion in model container [2020-09-04 16:10:04,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:03" (2/3) ... [2020-09-04 16:10:04,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2e8336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:10:04, skipping insertion in model container [2020-09-04 16:10:04,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:10:04" (3/3) ... [2020-09-04 16:10:04,168 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2020-09-04 16:10:04,179 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:10:04,189 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:10:04,208 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:10:04,231 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:10:04,231 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:10:04,231 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:10:04,231 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:10:04,231 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:10:04,231 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:10:04,232 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:10:04,232 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:10:04,251 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-09-04 16:10:04,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-04 16:10:04,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:10:04,266 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] [2020-09-04 16:10:04,267 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:10:04,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:10:04,274 INFO L82 PathProgramCache]: Analyzing trace with hash 284093711, now seen corresponding path program 1 times [2020-09-04 16:10:04,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:10:04,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147531596] [2020-09-04 16:10:04,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:10:04,351 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:10:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:10:04,517 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:10:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:10:04,657 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:10:04,729 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:10:04,729 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:10:04,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:10:04,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:10:04 BoogieIcfgContainer [2020-09-04 16:10:04,769 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:10:04,773 INFO L168 Benchmark]: Toolchain (without parser) took 1590.64 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 103.1 MB in the beginning and 135.8 MB in the end (delta: -32.7 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:04,774 INFO L168 Benchmark]: CDTParser took 0.82 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:10:04,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 445.11 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 102.7 MB in the beginning and 182.3 MB in the end (delta: -79.6 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:04,778 INFO L168 Benchmark]: Boogie Preprocessor took 58.42 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 179.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:04,780 INFO L168 Benchmark]: RCFGBuilder took 473.36 ms. Allocated memory is still 203.4 MB. Free memory was 179.9 MB in the beginning and 158.6 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:04,781 INFO L168 Benchmark]: TraceAbstraction took 608.41 ms. Allocated memory is still 203.4 MB. Free memory was 157.9 MB in the beginning and 135.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:04,792 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 445.11 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 102.7 MB in the beginning and 182.3 MB in the end (delta: -79.6 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.42 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 179.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 473.36 ms. Allocated memory is still 203.4 MB. Free memory was 179.9 MB in the beginning and 158.6 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 608.41 ms. Allocated memory is still 203.4 MB. Free memory was 157.9 MB in the beginning and 135.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 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: 0.5s, 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: No data available, 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...