/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:36:35,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:36:35,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:36:35,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:36:35,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:36:35,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:36:35,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:36:35,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:36:35,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:36:35,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:36:35,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:36:35,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:36:35,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:36:35,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:36:35,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:36:35,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:36:35,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:36:35,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:36:35,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:36:35,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:36:35,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:36:35,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:36:35,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:36:35,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:36:35,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:36:35,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:36:35,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:36:35,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:36:35,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:36:35,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:36:35,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:36:35,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:36:35,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:36:35,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:36:35,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:36:35,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:36:35,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:36:35,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:36:35,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:36:35,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:36:35,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:36:35,276 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 04:36:35,298 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:36:35,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:36:35,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:36:35,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:36:35,300 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:36:35,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:36:35,300 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:36:35,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:36:35,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:36:35,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:36:35,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:36:35,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:36:35,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:36:35,302 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:36:35,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:36:35,302 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:36:35,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:36:35,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:36:35,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:36:35,303 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:36:35,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:36:35,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:36:35,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:36:35,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:36:35,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:36:35,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:36:35,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:36:35,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:36:35,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:36:35,305 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:36:35,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:36:35,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:36:35,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:36:35,596 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:36:35,597 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:36:35,598 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-22 04:36:35,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2fc125d6/496c7aae86a1428ca6daf9d1d8e2e784/FLAGa7f503e05 [2020-08-22 04:36:36,137 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:36:36,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-08-22 04:36:36,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2fc125d6/496c7aae86a1428ca6daf9d1d8e2e784/FLAGa7f503e05 [2020-08-22 04:36:36,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2fc125d6/496c7aae86a1428ca6daf9d1d8e2e784 [2020-08-22 04:36:36,511 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:36:36,513 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:36:36,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:36:36,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:36:36,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:36:36,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:36:36" (1/1) ... [2020-08-22 04:36:36,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f3e4b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:36, skipping insertion in model container [2020-08-22 04:36:36,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:36:36" (1/1) ... [2020-08-22 04:36:36,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:36:36,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:36:36,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:36:36,755 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:36:36,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:36:36,918 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:36:36,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:36 WrapperNode [2020-08-22 04:36:36,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:36:36,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:36:36,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:36:36,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:36:36,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:36" (1/1) ... [2020-08-22 04:36:36,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:36" (1/1) ... [2020-08-22 04:36:36,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:36" (1/1) ... [2020-08-22 04:36:36,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:36" (1/1) ... [2020-08-22 04:36:36,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:36" (1/1) ... [2020-08-22 04:36:36,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:36" (1/1) ... [2020-08-22 04:36:36,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:36" (1/1) ... [2020-08-22 04:36:36,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:36:36,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:36:36,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:36:36,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:36:36,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:36:37,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:36:37,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:36:37,037 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-08-22 04:36:37,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-22 04:36:37,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:36:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:36:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-08-22 04:36:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:36:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 04:36:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:36:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:36:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:36:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 04:36:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-22 04:36:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:36:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:36:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:36:37,478 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:36:37,479 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 04:36:37,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:36:37 BoogieIcfgContainer [2020-08-22 04:36:37,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:36:37,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:36:37,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:36:37,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:36:37,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:36:36" (1/3) ... [2020-08-22 04:36:37,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35099c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:36:37, skipping insertion in model container [2020-08-22 04:36:37,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:36" (2/3) ... [2020-08-22 04:36:37,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35099c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:36:37, skipping insertion in model container [2020-08-22 04:36:37,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:36:37" (3/3) ... [2020-08-22 04:36:37,492 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-08-22 04:36:37,504 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:36:37,511 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:36:37,526 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:36:37,549 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:36:37,549 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:36:37,550 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:36:37,550 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:36:37,550 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:36:37,550 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:36:37,550 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:36:37,550 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:36:37,568 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-22 04:36:37,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 04:36:37,574 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:36:37,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:36:37,576 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:36:37,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:36:37,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-08-22 04:36:37,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:36:37,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107503635] [2020-08-22 04:36:37,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:36:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:36:37,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:36:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:36:37,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:36:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:36:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:36:37,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107503635] [2020-08-22 04:36:37,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:36:37,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:36:37,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104957049] [2020-08-22 04:36:37,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:36:37,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:36:37,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:36:37,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:36:37,881 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-08-22 04:36:38,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:36:38,171 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-08-22 04:36:38,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:36:38,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-22 04:36:38,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:36:38,182 INFO L225 Difference]: With dead ends: 94 [2020-08-22 04:36:38,182 INFO L226 Difference]: Without dead ends: 47 [2020-08-22 04:36:38,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:36:38,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-22 04:36:38,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-08-22 04:36:38,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-22 04:36:38,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-08-22 04:36:38,229 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-08-22 04:36:38,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:36:38,229 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-08-22 04:36:38,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:36:38,230 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-08-22 04:36:38,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 04:36:38,231 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:36:38,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:36:38,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:36:38,232 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:36:38,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:36:38,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-08-22 04:36:38,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:36:38,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440047394] [2020-08-22 04:36:38,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:36:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 04:36:38,322 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 04:36:38,323 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 04:36:38,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:36:38,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:36:38 BoogieIcfgContainer [2020-08-22 04:36:38,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 04:36:38,355 INFO L168 Benchmark]: Toolchain (without parser) took 1841.06 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.2 MB in the beginning and 107.1 MB in the end (delta: -3.9 MB). Peak memory consumption was 59.5 MB. Max. memory is 7.1 GB. [2020-08-22 04:36:38,356 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 04:36:38,357 INFO L168 Benchmark]: CACSL2BoogieTranslator took 404.31 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.8 MB in the beginning and 181.8 MB in the end (delta: -79.0 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-22 04:36:38,358 INFO L168 Benchmark]: Boogie Preprocessor took 49.76 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 179.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-22 04:36:38,359 INFO L168 Benchmark]: RCFGBuilder took 514.07 ms. Allocated memory is still 204.5 MB. Free memory was 179.8 MB in the beginning and 156.2 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-08-22 04:36:38,360 INFO L168 Benchmark]: TraceAbstraction took 867.61 ms. Allocated memory is still 204.5 MB. Free memory was 155.6 MB in the beginning and 107.1 MB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2020-08-22 04:36:38,365 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 404.31 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.8 MB in the beginning and 181.8 MB in the end (delta: -79.0 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.76 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 179.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 514.07 ms. Allocated memory is still 204.5 MB. Free memory was 179.8 MB in the beginning and 156.2 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 867.61 ms. Allocated memory is still 204.5 MB. Free memory was 155.6 MB in the beginning and 107.1 MB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 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...