/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -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 0.1.25-5644d1e-m [2020-08-19 04:20:11,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:20:11,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:20:11,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:20:11,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:20:11,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:20:11,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:20:11,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:20:11,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:20:11,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:20:11,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:20:11,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:20:11,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:20:11,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:20:11,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:20:11,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:20:11,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:20:11,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:20:11,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:20:11,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:20:11,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:20:11,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:20:11,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:20:11,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:20:11,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:20:11,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:20:11,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:20:11,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:20:11,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:20:11,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:20:11,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:20:11,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:20:11,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:20:11,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:20:11,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:20:11,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:20:11,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:20:11,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:20:11,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:20:11,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:20:11,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:20:11,187 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 [2020-08-19 04:20:11,234 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:20:11,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:20:11,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:20:11,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:20:11,240 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:20:11,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:20:11,240 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:20:11,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:20:11,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:20:11,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:20:11,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:20:11,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:20:11,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:20:11,242 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:20:11,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:20:11,244 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:20:11,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:20:11,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:20:11,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:20:11,247 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:20:11,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:20:11,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:20:11,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:20:11,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:20:11,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:20:11,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:20:11,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:20:11,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:20:11,249 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:20:11,249 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:20:11,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:20:11,598 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:20:11,602 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:20:11,603 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:20:11,605 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:20:11,606 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-19 04:20:11,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49d44c48b/600f0600ecd44b518fb510c4f95ae63a/FLAGe4828ed8f [2020-08-19 04:20:12,151 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:20:12,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-19 04:20:12,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49d44c48b/600f0600ecd44b518fb510c4f95ae63a/FLAGe4828ed8f [2020-08-19 04:20:12,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49d44c48b/600f0600ecd44b518fb510c4f95ae63a [2020-08-19 04:20:12,520 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:20:12,523 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:20:12,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:20:12,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:20:12,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:20:12,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:20:12" (1/1) ... [2020-08-19 04:20:12,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc4752c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12, skipping insertion in model container [2020-08-19 04:20:12,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:20:12" (1/1) ... [2020-08-19 04:20:12,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:20:12,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:20:12,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:20:12,758 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:20:12,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:20:12,908 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:20:12,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12 WrapperNode [2020-08-19 04:20:12,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:20:12,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:20:12,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:20:12,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:20:12,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12" (1/1) ... [2020-08-19 04:20:12,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12" (1/1) ... [2020-08-19 04:20:12,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12" (1/1) ... [2020-08-19 04:20:12,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12" (1/1) ... [2020-08-19 04:20:12,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12" (1/1) ... [2020-08-19 04:20:12,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12" (1/1) ... [2020-08-19 04:20:12,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12" (1/1) ... [2020-08-19 04:20:12,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:20:12,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:20:12,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:20:12,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:20:12,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12" (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 [2020-08-19 04:20:13,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:20:13,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:20:13,039 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-19 04:20:13,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-19 04:20:13,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:20:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:20:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-19 04:20:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:20:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 04:20:13,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:20:13,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:20:13,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:20:13,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 04:20:13,043 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-19 04:20:13,043 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:20:13,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:20:13,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:20:13,428 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:20:13,428 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-19 04:20:13,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:20:13 BoogieIcfgContainer [2020-08-19 04:20:13,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:20:13,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:20:13,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:20:13,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:20:13,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:20:12" (1/3) ... [2020-08-19 04:20:13,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e5dfa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:20:13, skipping insertion in model container [2020-08-19 04:20:13,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:12" (2/3) ... [2020-08-19 04:20:13,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e5dfa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:20:13, skipping insertion in model container [2020-08-19 04:20:13,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:20:13" (3/3) ... [2020-08-19 04:20:13,444 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-08-19 04:20:13,457 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:20:13,466 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:20:13,482 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:20:13,515 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:20:13,516 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:20:13,516 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:20:13,516 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:20:13,517 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:20:13,517 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:20:13,517 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:20:13,517 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:20:13,541 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-19 04:20:13,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 04:20:13,550 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:20:13,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:20:13,552 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:20:13,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:20:13,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-08-19 04:20:13,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:20:13,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277176649] [2020-08-19 04:20:13,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:20:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:13,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:20:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:13,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:20:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:13,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:20:13,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277176649] [2020-08-19 04:20:13,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:20:13,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:20:13,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260321998] [2020-08-19 04:20:13,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:20:13,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:20:13,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:20:13,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:20:13,818 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-08-19 04:20:14,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:20:14,112 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-08-19 04:20:14,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 04:20:14,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-19 04:20:14,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:20:14,126 INFO L225 Difference]: With dead ends: 94 [2020-08-19 04:20:14,126 INFO L226 Difference]: Without dead ends: 47 [2020-08-19 04:20:14,130 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 [2020-08-19 04:20:14,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-19 04:20:14,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-08-19 04:20:14,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-19 04:20:14,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-08-19 04:20:14,180 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-08-19 04:20:14,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:20:14,180 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-08-19 04:20:14,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:20:14,181 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-08-19 04:20:14,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 04:20:14,182 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:20:14,183 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] [2020-08-19 04:20:14,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:20:14,183 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:20:14,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:20:14,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-08-19 04:20:14,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:20:14,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724827023] [2020-08-19 04:20:14,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:20:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:20:14,281 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:20:14,282 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:20:14,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:20:14,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:20:14 BoogieIcfgContainer [2020-08-19 04:20:14,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:20:14,315 INFO L168 Benchmark]: Toolchain (without parser) took 1792.06 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 102.3 MB in the beginning and 106.3 MB in the end (delta: -4.0 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:14,317 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 04:20:14,318 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.47 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.9 MB in the beginning and 182.0 MB in the end (delta: -80.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:14,319 INFO L168 Benchmark]: Boogie Preprocessor took 48.33 ms. Allocated memory is still 203.4 MB. Free memory was 182.0 MB in the beginning and 179.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:14,320 INFO L168 Benchmark]: RCFGBuilder took 475.78 ms. Allocated memory is still 203.4 MB. Free memory was 179.6 MB in the beginning and 155.3 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:14,321 INFO L168 Benchmark]: TraceAbstraction took 877.21 ms. Allocated memory is still 203.4 MB. Free memory was 154.7 MB in the beginning and 106.3 MB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:14,325 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 382.47 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.9 MB in the beginning and 182.0 MB in the end (delta: -80.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.33 ms. Allocated memory is still 203.4 MB. Free memory was 182.0 MB in the beginning and 179.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 475.78 ms. Allocated memory is still 203.4 MB. Free memory was 179.6 MB in the beginning and 155.3 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 877.21 ms. Allocated memory is still 203.4 MB. Free memory was 154.7 MB in the beginning and 106.3 MB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 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, 0.1s 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...