/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:25:11,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:25:11,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:25:11,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:25:11,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:25:11,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:25:11,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:25:11,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:25:11,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:25:11,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:25:11,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:25:11,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:25:11,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:25:11,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:25:11,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:25:11,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:25:11,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:25:11,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:25:11,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:25:11,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:25:11,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:25:11,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:25:11,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:25:11,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:25:11,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:25:11,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:25:11,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:25:11,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:25:11,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:25:11,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:25:11,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:25:11,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:25:11,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:25:11,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:25:11,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:25:11,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:25:11,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:25:11,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:25:11,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:25:11,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:25:11,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:25:11,232 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 [2020-08-22 05:25:11,269 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:25:11,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:25:11,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:25:11,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:25:11,272 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:25:11,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:25:11,273 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:25:11,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:25:11,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:25:11,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:25:11,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:25:11,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:25:11,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:25:11,276 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:25:11,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:25:11,276 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:25:11,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:25:11,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:25:11,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:25:11,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:25:11,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:25:11,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:25:11,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:25:11,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:25:11,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:25:11,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:25:11,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:25:11,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:25:11,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:25:11,279 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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:25:11,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:25:11,613 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:25:11,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:25:11,618 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:25:11,618 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:25:11,619 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-22 05:25:11,696 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/509a59cfa/248609e044094f7b8d35e527df889c39/FLAG2f5e4b6ee [2020-08-22 05:25:12,171 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:25:12,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-22 05:25:12,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/509a59cfa/248609e044094f7b8d35e527df889c39/FLAG2f5e4b6ee [2020-08-22 05:25:12,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/509a59cfa/248609e044094f7b8d35e527df889c39 [2020-08-22 05:25:12,531 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:25:12,533 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:25:12,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:25:12,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:25:12,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:25:12,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:25:12" (1/1) ... [2020-08-22 05:25:12,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a39a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:12, skipping insertion in model container [2020-08-22 05:25:12,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:25:12" (1/1) ... [2020-08-22 05:25:12,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:25:12,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:25:12,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:25:12,772 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:25:12,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:25:12,917 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:25:12,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:12 WrapperNode [2020-08-22 05:25:12,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:25:12,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:25:12,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:25:12,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:25:12,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:12" (1/1) ... [2020-08-22 05:25:12,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:12" (1/1) ... [2020-08-22 05:25:12,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:12" (1/1) ... [2020-08-22 05:25:12,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:12" (1/1) ... [2020-08-22 05:25:12,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:12" (1/1) ... [2020-08-22 05:25:12,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:12" (1/1) ... [2020-08-22 05:25:12,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:12" (1/1) ... [2020-08-22 05:25:12,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:25:12,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:25:12,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:25:12,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:25:12,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:12" (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 [2020-08-22 05:25:13,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:25:13,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:25:13,039 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-22 05:25:13,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-22 05:25:13,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:25:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:25:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-22 05:25:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:25:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 05:25:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:25:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:25:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:25:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 05:25:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-22 05:25:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:25:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:25:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:25:13,419 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:25:13,419 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 05:25:13,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:25:13 BoogieIcfgContainer [2020-08-22 05:25:13,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:25:13,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:25:13,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:25:13,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:25:13,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:25:12" (1/3) ... [2020-08-22 05:25:13,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493bb44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:25:13, skipping insertion in model container [2020-08-22 05:25:13,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:12" (2/3) ... [2020-08-22 05:25:13,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493bb44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:25:13, skipping insertion in model container [2020-08-22 05:25:13,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:25:13" (3/3) ... [2020-08-22 05:25:13,434 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-08-22 05:25:13,445 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:25:13,452 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:25:13,467 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:25:13,493 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:25:13,493 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:25:13,493 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:25:13,493 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:25:13,493 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:25:13,494 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:25:13,494 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:25:13,494 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:25:13,515 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-22 05:25:13,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 05:25:13,522 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:25:13,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:25:13,524 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:25:13,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:25:13,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-08-22 05:25:13,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:25:13,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281209984] [2020-08-22 05:25:13,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:25:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:25:13,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:25:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:25:13,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:25:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:25:13,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:25:13,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281209984] [2020-08-22 05:25:13,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:25:13,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:25:13,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810320880] [2020-08-22 05:25:13,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:25:13,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:25:13,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:25:13,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:25:13,787 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-08-22 05:25:14,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:25:14,118 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-08-22 05:25:14,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 05:25:14,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-22 05:25:14,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:25:14,139 INFO L225 Difference]: With dead ends: 94 [2020-08-22 05:25:14,139 INFO L226 Difference]: Without dead ends: 47 [2020-08-22 05:25:14,145 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 [2020-08-22 05:25:14,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-22 05:25:14,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-08-22 05:25:14,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-22 05:25:14,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-08-22 05:25:14,192 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-08-22 05:25:14,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:25:14,192 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-08-22 05:25:14,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:25:14,193 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-08-22 05:25:14,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 05:25:14,194 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:25:14,194 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] [2020-08-22 05:25:14,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:25:14,195 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:25:14,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:25:14,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-08-22 05:25:14,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:25:14,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447178919] [2020-08-22 05:25:14,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:25:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 05:25:14,260 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 05:25:14,260 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:25:14,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:25:14,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:25:14 BoogieIcfgContainer [2020-08-22 05:25:14,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:25:14,283 INFO L168 Benchmark]: Toolchain (without parser) took 1750.03 ms. Allocated memory was 145.8 MB in the beginning and 201.3 MB in the end (delta: 55.6 MB). Free memory was 101.5 MB in the beginning and 104.1 MB in the end (delta: -2.6 MB). Peak memory consumption was 53.0 MB. Max. memory is 7.1 GB. [2020-08-22 05:25:14,284 INFO L168 Benchmark]: CDTParser took 0.81 ms. Allocated memory is still 145.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-08-22 05:25:14,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.53 ms. Allocated memory was 145.8 MB in the beginning and 201.3 MB in the end (delta: 55.6 MB). Free memory was 101.3 MB in the beginning and 179.4 MB in the end (delta: -78.1 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-08-22 05:25:14,287 INFO L168 Benchmark]: Boogie Preprocessor took 52.24 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 176.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-08-22 05:25:14,287 INFO L168 Benchmark]: RCFGBuilder took 453.37 ms. Allocated memory is still 201.3 MB. Free memory was 176.9 MB in the beginning and 152.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-08-22 05:25:14,288 INFO L168 Benchmark]: TraceAbstraction took 854.98 ms. Allocated memory is still 201.3 MB. Free memory was 152.9 MB in the beginning and 104.1 MB in the end (delta: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. [2020-08-22 05:25:14,292 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81 ms. Allocated memory is still 145.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 384.53 ms. Allocated memory was 145.8 MB in the beginning and 201.3 MB in the end (delta: 55.6 MB). Free memory was 101.3 MB in the beginning and 179.4 MB in the end (delta: -78.1 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.24 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 176.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 453.37 ms. Allocated memory is still 201.3 MB. Free memory was 176.9 MB in the beginning and 152.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 854.98 ms. Allocated memory is still 201.3 MB. Free memory was 152.9 MB in the beginning and 104.1 MB in the end (delta: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 103]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L98] double x = -0.0; [L99] CALL, EXPR floor_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND TRUE j0 < 20 [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; [L99] RET, EXPR floor_double(x) [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 55 SDslu, 5 SDs, 0 SdLazy, 65 SolverSat, 11 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=51occurred 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, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 756 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...