/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=0.4 -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 05:57:12,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:57:12,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:57:12,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:57:12,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:57:12,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:57:12,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:57:12,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:57:12,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:57:12,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:57:12,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:57:12,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:57:12,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:57:12,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:57:12,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:57:12,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:57:12,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:57:12,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:57:12,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:57:12,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:57:12,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:57:12,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:57:12,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:57:12,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:57:12,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:57:12,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:57:12,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:57:12,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:57:12,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:57:12,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:57:12,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:57:12,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:57:12,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:57:12,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:57:12,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:57:12,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:57:12,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:57:12,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:57:12,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:57:12,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:57:12,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:57:12,230 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 05:57:12,270 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:57:12,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:57:12,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:57:12,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:57:12,272 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:57:12,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:57:12,272 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:57:12,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:57:12,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:57:12,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:57:12,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:57:12,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:57:12,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:57:12,274 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:57:12,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:57:12,274 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:57:12,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:57:12,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:57:12,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:57:12,275 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:57:12,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:57:12,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:57:12,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:57:12,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:57:12,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:57:12,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:57:12,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:57:12,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:57:12,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:57:12,277 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=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 05:57:12,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:57:12,606 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:57:12,609 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:57:12,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:57:12,612 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:57:12,612 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-19 05:57:12,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8261aaf66/d2555f8279134328b5a483db10dccdb1/FLAG081ac9610 [2020-08-19 05:57:13,145 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:57:13,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-19 05:57:13,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8261aaf66/d2555f8279134328b5a483db10dccdb1/FLAG081ac9610 [2020-08-19 05:57:13,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8261aaf66/d2555f8279134328b5a483db10dccdb1 [2020-08-19 05:57:13,524 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:57:13,526 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:57:13,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:57:13,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:57:13,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:57:13,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:57:13" (1/1) ... [2020-08-19 05:57:13,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fbdf966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:13, skipping insertion in model container [2020-08-19 05:57:13,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:57:13" (1/1) ... [2020-08-19 05:57:13,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:57:13,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:57:13,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:57:13,871 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:57:14,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:57:14,028 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:57:14,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:14 WrapperNode [2020-08-19 05:57:14,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:57:14,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:57:14,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:57:14,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:57:14,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:14" (1/1) ... [2020-08-19 05:57:14,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:14" (1/1) ... [2020-08-19 05:57:14,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:14" (1/1) ... [2020-08-19 05:57:14,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:14" (1/1) ... [2020-08-19 05:57:14,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:14" (1/1) ... [2020-08-19 05:57:14,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:14" (1/1) ... [2020-08-19 05:57:14,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:14" (1/1) ... [2020-08-19 05:57:14,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:57:14,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:57:14,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:57:14,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:57:14,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:14" (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 05:57:14,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:57:14,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:57:14,155 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-19 05:57:14,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-19 05:57:14,155 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:57:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:57:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-19 05:57:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:57:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 05:57:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:57:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:57:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:57:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 05:57:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-19 05:57:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:57:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:57:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:57:14,529 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:57:14,529 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-19 05:57:14,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:57:14 BoogieIcfgContainer [2020-08-19 05:57:14,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:57:14,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:57:14,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:57:14,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:57:14,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:57:13" (1/3) ... [2020-08-19 05:57:14,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb96d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:57:14, skipping insertion in model container [2020-08-19 05:57:14,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:57:14" (2/3) ... [2020-08-19 05:57:14,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb96d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:57:14, skipping insertion in model container [2020-08-19 05:57:14,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:57:14" (3/3) ... [2020-08-19 05:57:14,543 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-08-19 05:57:14,557 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:57:14,565 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:57:14,581 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:57:14,608 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:57:14,608 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:57:14,608 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:57:14,609 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:57:14,609 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:57:14,609 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:57:14,610 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:57:14,610 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:57:14,632 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-19 05:57:14,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 05:57:14,640 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:57:14,641 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 05:57:14,642 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:57:14,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:57:14,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-08-19 05:57:14,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:57:14,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821581421] [2020-08-19 05:57:14,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:57:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:57:14,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:57:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:57:14,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:57:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:57:14,925 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 05:57:14,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821581421] [2020-08-19 05:57:14,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:57:14,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:57:14,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175042169] [2020-08-19 05:57:14,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:57:14,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:57:14,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:57:14,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:57:14,953 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-08-19 05:57:15,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:57:15,220 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-08-19 05:57:15,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:57:15,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-19 05:57:15,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:57:15,233 INFO L225 Difference]: With dead ends: 94 [2020-08-19 05:57:15,234 INFO L226 Difference]: Without dead ends: 47 [2020-08-19 05:57:15,238 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 05:57:15,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-19 05:57:15,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-08-19 05:57:15,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-19 05:57:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-08-19 05:57:15,288 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-08-19 05:57:15,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:57:15,289 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-08-19 05:57:15,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:57:15,289 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-08-19 05:57:15,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 05:57:15,291 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:57:15,291 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 05:57:15,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:57:15,292 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:57:15,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:57:15,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-08-19 05:57:15,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:57:15,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031803207] [2020-08-19 05:57:15,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:57:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 05:57:15,381 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 05:57:15,382 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 05:57:15,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:57:15,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:57:15 BoogieIcfgContainer [2020-08-19 05:57:15,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:57:15,406 INFO L168 Benchmark]: Toolchain (without parser) took 1878.77 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.5 MB in the beginning and 102.9 MB in the end (delta: 583.1 kB). Peak memory consumption was 63.0 MB. Max. memory is 7.1 GB. [2020-08-19 05:57:15,407 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 05:57:15,408 INFO L168 Benchmark]: CACSL2BoogieTranslator took 502.37 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.3 MB in the beginning and 179.4 MB in the end (delta: -76.1 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-08-19 05:57:15,409 INFO L168 Benchmark]: Boogie Preprocessor took 54.40 ms. Allocated memory is still 202.9 MB. Free memory was 179.4 MB in the beginning and 177.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-19 05:57:15,410 INFO L168 Benchmark]: RCFGBuilder took 450.74 ms. Allocated memory is still 202.9 MB. Free memory was 177.3 MB in the beginning and 153.4 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-08-19 05:57:15,411 INFO L168 Benchmark]: TraceAbstraction took 866.68 ms. Allocated memory is still 202.9 MB. Free memory was 153.4 MB in the beginning and 102.9 MB in the end (delta: 50.5 MB). Peak memory consumption was 50.5 MB. Max. memory is 7.1 GB. [2020-08-19 05:57:15,416 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 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 502.37 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.3 MB in the beginning and 179.4 MB in the end (delta: -76.1 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.40 ms. Allocated memory is still 202.9 MB. Free memory was 179.4 MB in the beginning and 177.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.74 ms. Allocated memory is still 202.9 MB. Free memory was 177.3 MB in the beginning and 153.4 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 866.68 ms. Allocated memory is still 202.9 MB. Free memory was 153.4 MB in the beginning and 102.9 MB in the end (delta: 50.5 MB). Peak memory consumption was 50.5 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...