/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 false -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-eb0fd7c [2020-09-21 10:16:39,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:16:39,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:16:39,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:16:39,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:16:39,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:16:39,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:16:39,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:16:39,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:16:39,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:16:39,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:16:39,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:16:39,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:16:39,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:16:39,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:16:39,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:16:39,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:16:39,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:16:39,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:16:39,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:16:39,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:16:39,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:16:39,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:16:39,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:16:39,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-21 10:16:39,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:16:39,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:16:39,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:16:39,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:16:39,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:16:39,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:16:39,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:16:39,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:16:39,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:16:39,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:16:39,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:16:39,298 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 [2020-09-21 10:16:39,325 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:16:39,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:16:39,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:16:39,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:16:39,327 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:16:39,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:16:39,328 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:16:39,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:16:39,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:16:39,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:16:39,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:16:39,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:16:39,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:16:39,329 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:16:39,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:16:39,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:16:39,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:16:39,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:16:39,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:16:39,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:16:39,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:16:39,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:16:39,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:16:39,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:16:39,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:16:39,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:16:39,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:16:39,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:16:39,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:16:39,333 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 -> false [2020-09-21 10:16:39,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:16:39,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:16:39,965 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:16:39,967 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:16:39,968 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:16:39,969 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-09-21 10:16:40,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b87b8019c/3efcffbaeb9c469697c5f94efc708509/FLAG475373ddc [2020-09-21 10:16:40,633 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:16:40,634 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-09-21 10:16:40,643 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b87b8019c/3efcffbaeb9c469697c5f94efc708509/FLAG475373ddc [2020-09-21 10:16:40,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b87b8019c/3efcffbaeb9c469697c5f94efc708509 [2020-09-21 10:16:40,984 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:16:40,989 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:16:40,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:16:40,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:16:40,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:16:40,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:16:40" (1/1) ... [2020-09-21 10:16:41,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fcbc996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:40, skipping insertion in model container [2020-09-21 10:16:41,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:16:40" (1/1) ... [2020-09-21 10:16:41,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:16:41,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:16:41,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:16:41,280 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:16:41,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:16:41,424 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:16:41,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:41 WrapperNode [2020-09-21 10:16:41,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:16:41,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:16:41,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:16:41,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:16:41,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:41" (1/1) ... [2020-09-21 10:16:41,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:41" (1/1) ... [2020-09-21 10:16:41,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:41" (1/1) ... [2020-09-21 10:16:41,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:41" (1/1) ... [2020-09-21 10:16:41,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:41" (1/1) ... [2020-09-21 10:16:41,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:41" (1/1) ... [2020-09-21 10:16:41,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:41" (1/1) ... [2020-09-21 10:16:41,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:16:41,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:16:41,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:16:41,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:16:41,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:16:41,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:16:41,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:16:41,559 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-09-21 10:16:41,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-21 10:16:41,559 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:16:41,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:16:41,559 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-09-21 10:16:41,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:16:41,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 10:16:41,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:16:41,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:16:41,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:16:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 10:16:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-21 10:16:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:16:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:16:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:16:41,958 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:16:41,958 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-21 10:16:41,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:16:41 BoogieIcfgContainer [2020-09-21 10:16:41,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:16:41,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:16:41,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:16:41,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:16:41,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:16:40" (1/3) ... [2020-09-21 10:16:41,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d063d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:16:41, skipping insertion in model container [2020-09-21 10:16:41,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:16:41" (2/3) ... [2020-09-21 10:16:41,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d063d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:16:41, skipping insertion in model container [2020-09-21 10:16:41,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:16:41" (3/3) ... [2020-09-21 10:16:41,975 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-09-21 10:16:41,999 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:16:42,017 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:16:42,042 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:16:42,073 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:16:42,073 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:16:42,073 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:16:42,073 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:16:42,073 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:16:42,074 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:16:42,074 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:16:42,074 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:16:42,099 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-09-21 10:16:42,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 10:16:42,107 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:42,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:16:42,109 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:42,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:42,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-09-21 10:16:42,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:42,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012622135] [2020-09-21 10:16:42,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:42,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:16:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:42,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:16:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:16:42,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:16:42,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012622135] [2020-09-21 10:16:42,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:16:42,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:16:42,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481728983] [2020-09-21 10:16:42,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:16:42,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:16:42,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:16:42,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:16:42,424 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-09-21 10:16:42,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:16:42,696 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-09-21 10:16:42,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:16:42,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-21 10:16:42,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:16:42,713 INFO L225 Difference]: With dead ends: 94 [2020-09-21 10:16:42,713 INFO L226 Difference]: Without dead ends: 47 [2020-09-21 10:16:42,719 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 [2020-09-21 10:16:42,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-21 10:16:42,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-21 10:16:42,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-21 10:16:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-09-21 10:16:42,777 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-09-21 10:16:42,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:16:42,778 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-09-21 10:16:42,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:16:42,778 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-09-21 10:16:42,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 10:16:42,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:16:42,780 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] [2020-09-21 10:16:42,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:16:42,781 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:16:42,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:16:42,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-09-21 10:16:42,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:16:42,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468536727] [2020-09-21 10:16:42,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:16:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:16:42,839 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:16:42,839 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:16:42,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:16:42,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:16:42 BoogieIcfgContainer [2020-09-21 10:16:42,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:16:42,873 INFO L168 Benchmark]: Toolchain (without parser) took 1885.52 ms. Allocated memory was 135.8 MB in the beginning and 197.7 MB in the end (delta: 61.9 MB). Free memory was 98.3 MB in the beginning and 100.2 MB in the end (delta: -1.9 MB). Peak memory consumption was 60.0 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:42,874 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 135.8 MB. Free memory was 117.3 MB in the beginning and 117.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:16:42,875 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.45 ms. Allocated memory was 135.8 MB in the beginning and 197.7 MB in the end (delta: 61.9 MB). Free memory was 97.6 MB in the beginning and 176.3 MB in the end (delta: -78.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:42,876 INFO L168 Benchmark]: Boogie Preprocessor took 57.61 ms. Allocated memory is still 197.7 MB. Free memory was 175.6 MB in the beginning and 173.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:42,877 INFO L168 Benchmark]: RCFGBuilder took 481.80 ms. Allocated memory is still 197.7 MB. Free memory was 173.1 MB in the beginning and 148.9 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:42,878 INFO L168 Benchmark]: TraceAbstraction took 902.28 ms. Allocated memory is still 197.7 MB. Free memory was 148.9 MB in the beginning and 100.2 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. [2020-09-21 10:16:42,883 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 135.8 MB. Free memory was 117.3 MB in the beginning and 117.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 435.45 ms. Allocated memory was 135.8 MB in the beginning and 197.7 MB in the end (delta: 61.9 MB). Free memory was 97.6 MB in the beginning and 176.3 MB in the end (delta: -78.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.61 ms. Allocated memory is still 197.7 MB. Free memory was 175.6 MB in the beginning and 173.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 481.80 ms. Allocated memory is still 197.7 MB. Free memory was 173.1 MB in the beginning and 148.9 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 902.28 ms. Allocated memory is still 197.7 MB. Free memory was 148.9 MB in the beginning and 100.2 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 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...