/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --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-newlib/double_req_bl_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:05:45,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:05:45,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:05:45,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:05:45,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:05:45,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:05:45,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:05:45,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:05:45,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:05:45,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:05:45,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:05:45,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:05:45,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:05:45,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:05:45,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:05:45,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:05:45,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:05:45,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:05:45,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:05:45,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:05:45,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:05:45,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:05:45,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:05:45,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:05:45,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:05:45,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:05:45,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:05:45,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:05:45,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:05:45,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:05:45,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:05:45,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:05:45,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:05:45,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:05:45,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:05:45,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:05:45,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:05:45,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:05:45,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:05:45,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:05:45,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:05:45,253 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 [2020-08-21 18:05:45,289 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:05:45,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:05:45,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:05:45,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:05:45,294 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:05:45,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:05:45,294 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:05:45,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:05:45,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:05:45,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:05:45,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:05:45,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:05:45,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:05:45,298 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:05:45,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:05:45,298 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:05:45,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:05:45,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:05:45,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:05:45,299 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:05:45,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:05:45,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:05:45,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:05:45,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:05:45,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:05:45,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:05:45,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:05:45,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:05:45,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:05:45,302 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:05:45,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:05:45,655 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:05:45,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:05:45,662 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:05:45,663 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:05:45,664 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-21 18:05:45,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/947c36d93/ad2e1cf0fdb24fa8953ba0dd138c88c7/FLAG14de69ab2 [2020-08-21 18:05:46,194 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:05:46,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-21 18:05:46,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/947c36d93/ad2e1cf0fdb24fa8953ba0dd138c88c7/FLAG14de69ab2 [2020-08-21 18:05:46,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/947c36d93/ad2e1cf0fdb24fa8953ba0dd138c88c7 [2020-08-21 18:05:46,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:05:46,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:05:46,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:05:46,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:05:46,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:05:46,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:05:46" (1/1) ... [2020-08-21 18:05:46,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b40e8eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:46, skipping insertion in model container [2020-08-21 18:05:46,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:05:46" (1/1) ... [2020-08-21 18:05:46,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:05:46,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:05:46,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:05:46,846 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:05:46,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:05:46,984 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:05:46,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:46 WrapperNode [2020-08-21 18:05:46,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:05:46,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:05:46,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:05:46,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:05:46,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:46" (1/1) ... [2020-08-21 18:05:46,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:46" (1/1) ... [2020-08-21 18:05:47,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:46" (1/1) ... [2020-08-21 18:05:47,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:46" (1/1) ... [2020-08-21 18:05:47,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:46" (1/1) ... [2020-08-21 18:05:47,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:46" (1/1) ... [2020-08-21 18:05:47,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:46" (1/1) ... [2020-08-21 18:05:47,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:05:47,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:05:47,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:05:47,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:05:47,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:46" (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 [2020-08-21 18:05:47,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:05:47,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:05:47,103 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 18:05:47,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-21 18:05:47,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:05:47,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:05:47,103 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 18:05:47,104 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-21 18:05:47,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:05:47,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 18:05:47,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:05:47,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:05:47,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:05:47,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 18:05:47,105 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:05:47,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:05:47,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:05:47,530 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:05:47,531 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 18:05:47,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:05:47 BoogieIcfgContainer [2020-08-21 18:05:47,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:05:47,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:05:47,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:05:47,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:05:47,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:05:46" (1/3) ... [2020-08-21 18:05:47,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7650bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:05:47, skipping insertion in model container [2020-08-21 18:05:47,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:46" (2/3) ... [2020-08-21 18:05:47,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7650bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:05:47, skipping insertion in model container [2020-08-21 18:05:47,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:05:47" (3/3) ... [2020-08-21 18:05:47,543 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-08-21 18:05:47,553 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:05:47,560 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:05:47,574 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:05:47,598 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:05:47,599 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:05:47,599 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:05:47,599 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:05:47,599 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:05:47,600 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:05:47,600 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:05:47,600 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:05:47,619 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-21 18:05:47,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 18:05:47,626 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:05:47,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:05:47,628 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:05:47,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:05:47,634 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-08-21 18:05:47,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:05:47,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238137092] [2020-08-21 18:05:47,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:05:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:47,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:47,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:05:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:47,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:05:47,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238137092] [2020-08-21 18:05:47,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:05:47,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:05:47,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325625055] [2020-08-21 18:05:47,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:05:47,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:05:47,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:05:47,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:05:47,875 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-21 18:05:48,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:05:48,135 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-08-21 18:05:48,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 18:05:48,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-08-21 18:05:48,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:05:48,149 INFO L225 Difference]: With dead ends: 76 [2020-08-21 18:05:48,149 INFO L226 Difference]: Without dead ends: 38 [2020-08-21 18:05:48,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:05:48,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-21 18:05:48,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-21 18:05:48,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-21 18:05:48,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-08-21 18:05:48,197 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-08-21 18:05:48,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:05:48,198 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-08-21 18:05:48,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:05:48,198 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-08-21 18:05:48,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 18:05:48,199 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:05:48,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:05:48,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:05:48,200 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:05:48,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:05:48,201 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-08-21 18:05:48,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:05:48,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45237311] [2020-08-21 18:05:48,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:05:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:05:48,248 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:05:48,248 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:05:48,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:05:48,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:05:48 BoogieIcfgContainer [2020-08-21 18:05:48,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:05:48,274 INFO L168 Benchmark]: Toolchain (without parser) took 1666.53 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 103.0 MB in the beginning and 110.9 MB in the end (delta: -7.8 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2020-08-21 18:05:48,275 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 18:05:48,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.27 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.8 MB in the beginning and 180.3 MB in the end (delta: -77.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-08-21 18:05:48,277 INFO L168 Benchmark]: Boogie Preprocessor took 45.88 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 177.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-21 18:05:48,278 INFO L168 Benchmark]: RCFGBuilder took 502.65 ms. Allocated memory is still 202.4 MB. Free memory was 177.8 MB in the beginning and 156.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-08-21 18:05:48,279 INFO L168 Benchmark]: TraceAbstraction took 735.77 ms. Allocated memory is still 202.4 MB. Free memory was 155.6 MB in the beginning and 110.9 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. [2020-08-21 18:05:48,283 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 377.27 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.8 MB in the beginning and 180.3 MB in the end (delta: -77.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.88 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 177.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 502.65 ms. Allocated memory is still 202.4 MB. Free memory was 177.8 MB in the beginning and 156.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 735.77 ms. Allocated memory is still 202.4 MB. Free memory was 155.6 MB in the beginning and 110.9 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someUnaryDOUBLEoperation at line 91, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 95. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L91] double x = -0.0; [L92] CALL, EXPR ceil_double(x) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; [L92] RET, EXPR ceil_double(x) [L92] double res = ceil_double(x); [L95] COND TRUE res != x [L96] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 47 SDslu, 5 SDs, 0 SdLazy, 55 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...