/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_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:20:08,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:20:08,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:20:08,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:20:08,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:20:08,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:20:08,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:20:08,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:20:08,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:20:08,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:20:08,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:20:08,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:20:08,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:20:08,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:20:08,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:20:08,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:20:08,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:20:08,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:20:08,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:20:08,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:20:08,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:20:08,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:20:08,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:20:08,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:20:08,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:20:08,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:20:08,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:20:08,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:20:08,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:20:08,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:20:08,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:20:08,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:20:08,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:20:08,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:20:08,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:20:08,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:20:08,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:20:08,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:20:08,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:20:08,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:20:08,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:20:08,308 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 04:20:08,352 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:20:08,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:20:08,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:20:08,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:20:08,355 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:20:08,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:20:08,356 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:20:08,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:20:08,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:20:08,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:20:08,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:20:08,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:20:08,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:20:08,358 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:20:08,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:20:08,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:20:08,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:20:08,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:20:08,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:20:08,359 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:20:08,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:20:08,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:20:08,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:20:08,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:20:08,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:20:08,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:20:08,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:20:08,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:20:08,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:20:08,361 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 04:20:08,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:20:08,686 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:20:08,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:20:08,690 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:20:08,691 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:20:08,691 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-19 04:20:08,749 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d02f0f2a2/a950b6e1e6c841b0ab84fafe2eec64fe/FLAG5d4b3c6e4 [2020-08-19 04:20:09,139 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:20:09,140 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-08-19 04:20:09,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d02f0f2a2/a950b6e1e6c841b0ab84fafe2eec64fe/FLAG5d4b3c6e4 [2020-08-19 04:20:09,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d02f0f2a2/a950b6e1e6c841b0ab84fafe2eec64fe [2020-08-19 04:20:09,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:20:09,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:20:09,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:20:09,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:20:09,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:20:09,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:20:09" (1/1) ... [2020-08-19 04:20:09,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30380f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:09, skipping insertion in model container [2020-08-19 04:20:09,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:20:09" (1/1) ... [2020-08-19 04:20:09,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:20:09,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:20:09,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:20:09,787 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:20:09,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:20:09,919 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:20:09,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:09 WrapperNode [2020-08-19 04:20:09,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:20:09,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:20:09,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:20:09,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:20:09,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:09" (1/1) ... [2020-08-19 04:20:09,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:09" (1/1) ... [2020-08-19 04:20:09,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:09" (1/1) ... [2020-08-19 04:20:09,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:09" (1/1) ... [2020-08-19 04:20:09,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:09" (1/1) ... [2020-08-19 04:20:09,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:09" (1/1) ... [2020-08-19 04:20:09,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:09" (1/1) ... [2020-08-19 04:20:09,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:20:09,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:20:09,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:20:09,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:20:09,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:09" (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 04:20:10,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:20:10,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:20:10,028 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-19 04:20:10,029 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-19 04:20:10,029 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:20:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:20:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-19 04:20:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:20:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 04:20:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:20:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:20:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:20:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 04:20:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-19 04:20:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:20:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:20:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:20:10,392 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:20:10,392 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 04:20:10,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:20:10 BoogieIcfgContainer [2020-08-19 04:20:10,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:20:10,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:20:10,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:20:10,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:20:10,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:20:09" (1/3) ... [2020-08-19 04:20:10,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a34d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:20:10, skipping insertion in model container [2020-08-19 04:20:10,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:20:09" (2/3) ... [2020-08-19 04:20:10,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a34d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:20:10, skipping insertion in model container [2020-08-19 04:20:10,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:20:10" (3/3) ... [2020-08-19 04:20:10,405 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-08-19 04:20:10,414 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:20:10,422 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:20:10,434 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:20:10,456 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:20:10,457 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:20:10,457 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:20:10,457 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:20:10,457 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:20:10,457 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:20:10,457 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:20:10,457 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:20:10,473 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-19 04:20:10,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 04:20:10,478 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:20:10,479 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, 1, 1, 1] [2020-08-19 04:20:10,479 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:20:10,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:20:10,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-08-19 04:20:10,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:20:10,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396981258] [2020-08-19 04:20:10,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:20:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:10,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:20:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:10,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:20:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:10,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:20:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:20:10,722 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 04:20:10,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396981258] [2020-08-19 04:20:10,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:20:10,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:20:10,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646909626] [2020-08-19 04:20:10,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:20:10,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:20:10,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:20:10,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:20:10,749 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-19 04:20:10,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:20:10,962 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-19 04:20:10,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 04:20:10,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-19 04:20:10,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:20:10,976 INFO L225 Difference]: With dead ends: 86 [2020-08-19 04:20:10,976 INFO L226 Difference]: Without dead ends: 43 [2020-08-19 04:20:10,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 04:20:10,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-19 04:20:11,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-19 04:20:11,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-19 04:20:11,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-19 04:20:11,018 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-19 04:20:11,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:20:11,019 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-19 04:20:11,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:20:11,019 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-19 04:20:11,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 04:20:11,020 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:20:11,021 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, 1, 1, 1, 1] [2020-08-19 04:20:11,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:20:11,021 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:20:11,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:20:11,022 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-08-19 04:20:11,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:20:11,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992596096] [2020-08-19 04:20:11,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:20:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:20:11,084 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:20:11,084 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:20:11,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:20:11,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:20:11 BoogieIcfgContainer [2020-08-19 04:20:11,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:20:11,107 INFO L168 Benchmark]: Toolchain (without parser) took 1595.15 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 103.5 MB in the beginning and 110.1 MB in the end (delta: -6.6 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:11,108 INFO L168 Benchmark]: CDTParser took 0.22 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 04:20:11,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 407.68 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 103.1 MB in the beginning and 182.3 MB in the end (delta: -79.3 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:11,110 INFO L168 Benchmark]: Boogie Preprocessor took 47.44 ms. Allocated memory is still 204.5 MB. Free memory was 182.3 MB in the beginning and 180.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:11,111 INFO L168 Benchmark]: RCFGBuilder took 428.34 ms. Allocated memory is still 204.5 MB. Free memory was 180.3 MB in the beginning and 158.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:11,112 INFO L168 Benchmark]: TraceAbstraction took 706.89 ms. Allocated memory is still 204.5 MB. Free memory was 157.3 MB in the beginning and 110.1 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. [2020-08-19 04:20:11,116 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 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 407.68 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 103.1 MB in the beginning and 182.3 MB in the end (delta: -79.3 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.44 ms. Allocated memory is still 204.5 MB. Free memory was 182.3 MB in the beginning and 180.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 428.34 ms. Allocated memory is still 204.5 MB. Free memory was 180.3 MB in the beginning and 158.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 706.89 ms. Allocated memory is still 204.5 MB. Free memory was 157.3 MB in the beginning and 110.1 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: 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 someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 80. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L88] double x = 0.0 / 0.0; [L89] 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; [L89] RET, EXPR floor_double(x) [L89] double res = floor_double(x); [L92] CALL, EXPR isnan_double(res) [L80] return x != x; [L92] RET, EXPR isnan_double(res) [L92] COND TRUE !isnan_double(res) [L93] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 52 SDslu, 5 SDs, 0 SdLazy, 58 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 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...