/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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-c90d42b [2020-09-24 19:17:11,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:17:11,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:17:11,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:17:11,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:17:11,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:17:11,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:17:11,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:17:11,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:17:11,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:17:11,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:17:11,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:17:11,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:17:11,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:17:11,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:17:11,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:17:11,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:17:11,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:17:11,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:17:11,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:17:11,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:17:11,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:17:11,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:17:11,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:17:11,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:17:11,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:17:11,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:17:11,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:17:11,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:17:11,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:17:11,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:17:11,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:17:11,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:17:11,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:17:11,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:17:11,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:17:11,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:17:11,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:17:11,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:17:11,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:17:11,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:17:11,430 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 [2020-09-24 19:17:11,477 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:17:11,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:17:11,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:17:11,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:17:11,480 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:17:11,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:17:11,481 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:17:11,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:17:11,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:17:11,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:17:11,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:17:11,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:17:11,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:17:11,484 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:17:11,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:17:11,484 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:17:11,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:17:11,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:17:11,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:17:11,485 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:17:11,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:17:11,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:17:11,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:17:11,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:17:11,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:17:11,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:17:11,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:17:11,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:17:11,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:17:11,487 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:17:11,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:17:12,009 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:17:12,013 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:17:12,015 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:17:12,015 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:17:12,017 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-09-24 19:17:12,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e09fa7afb/d3106f511ef4428f8adafc6804aa92ac/FLAGdb2627ab1 [2020-09-24 19:17:12,638 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:17:12,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-09-24 19:17:12,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e09fa7afb/d3106f511ef4428f8adafc6804aa92ac/FLAGdb2627ab1 [2020-09-24 19:17:12,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e09fa7afb/d3106f511ef4428f8adafc6804aa92ac [2020-09-24 19:17:12,970 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:17:12,975 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:17:12,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:17:12,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:17:12,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:17:12,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:12" (1/1) ... [2020-09-24 19:17:12,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@695bec44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:12, skipping insertion in model container [2020-09-24 19:17:12,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:12" (1/1) ... [2020-09-24 19:17:12,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:17:13,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:17:13,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:17:13,259 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:17:13,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:17:13,399 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:17:13,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:13 WrapperNode [2020-09-24 19:17:13,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:17:13,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:17:13,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:17:13,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:17:13,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:13" (1/1) ... [2020-09-24 19:17:13,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:13" (1/1) ... [2020-09-24 19:17:13,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:13" (1/1) ... [2020-09-24 19:17:13,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:13" (1/1) ... [2020-09-24 19:17:13,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:13" (1/1) ... [2020-09-24 19:17:13,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:13" (1/1) ... [2020-09-24 19:17:13,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:13" (1/1) ... [2020-09-24 19:17:13,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:17:13,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:17:13,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:17:13,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:17:13,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:13" (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 [2020-09-24 19:17:13,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:17:13,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:17:13,546 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-09-24 19:17:13,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-24 19:17:13,547 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:17:13,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:17:13,547 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-09-24 19:17:13,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:17:13,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 19:17:13,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:17:13,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:17:13,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:17:13,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 19:17:13,548 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-24 19:17:13,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:17:13,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:17:13,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:17:13,992 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:17:13,992 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-24 19:17:14,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:14 BoogieIcfgContainer [2020-09-24 19:17:14,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:17:14,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:17:14,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:17:14,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:17:14,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:17:12" (1/3) ... [2020-09-24 19:17:14,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7670329b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:14, skipping insertion in model container [2020-09-24 19:17:14,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:13" (2/3) ... [2020-09-24 19:17:14,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7670329b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:14, skipping insertion in model container [2020-09-24 19:17:14,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:14" (3/3) ... [2020-09-24 19:17:14,012 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-09-24 19:17:14,023 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:17:14,033 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:17:14,056 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:17:14,089 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:17:14,089 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:17:14,089 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:17:14,089 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:17:14,090 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:17:14,090 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:17:14,090 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:17:14,090 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:17:14,117 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states. [2020-09-24 19:17:14,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 19:17:14,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:14,129 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:14,130 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:14,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:14,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1852514461, now seen corresponding path program 1 times [2020-09-24 19:17:14,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:14,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371873369] [2020-09-24 19:17:14,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:14,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:14,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:14,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 19:17:14,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:14,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 19:17:14,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:14,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:14,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 19:17:14,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:14,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:17:14,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:14,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:14,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:14,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:17:14,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:14,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 19:17:14,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:14,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:14,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:14,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:17:14,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:14,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:14,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:14,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:17:14,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:14,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 19:17:14,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:14,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:14,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 19:17:14,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:14,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:14,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:17:14,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371873369] [2020-09-24 19:17:14,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:14,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:17:14,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117504975] [2020-09-24 19:17:14,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:17:14,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:14,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:17:14,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:17:14,704 INFO L87 Difference]: Start difference. First operand 115 states. Second operand 4 states. [2020-09-24 19:17:15,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:15,064 INFO L93 Difference]: Finished difference Result 213 states and 258 transitions. [2020-09-24 19:17:15,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:17:15,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-24 19:17:15,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:15,080 INFO L225 Difference]: With dead ends: 213 [2020-09-24 19:17:15,080 INFO L226 Difference]: Without dead ends: 107 [2020-09-24 19:17:15,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:17:15,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-24 19:17:15,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-09-24 19:17:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-24 19:17:15,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2020-09-24 19:17:15,138 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 32 [2020-09-24 19:17:15,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:15,139 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2020-09-24 19:17:15,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:17:15,139 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2020-09-24 19:17:15,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 19:17:15,141 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:15,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:15,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:17:15,142 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:15,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:15,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1065550425, now seen corresponding path program 1 times [2020-09-24 19:17:15,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:15,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419886354] [2020-09-24 19:17:15,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 19:17:15,198 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 19:17:15,198 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 19:17:15,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:17:15,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:17:15 BoogieIcfgContainer [2020-09-24 19:17:15,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:17:15,232 INFO L168 Benchmark]: Toolchain (without parser) took 2259.66 ms. Allocated memory was 140.5 MB in the beginning and 235.4 MB in the end (delta: 94.9 MB). Free memory was 102.0 MB in the beginning and 193.8 MB in the end (delta: -91.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:15,234 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 19:17:15,235 INFO L168 Benchmark]: CACSL2BoogieTranslator took 425.11 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 181.7 MB in the end (delta: -80.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:15,236 INFO L168 Benchmark]: Boogie Preprocessor took 65.08 ms. Allocated memory is still 203.4 MB. Free memory was 181.7 MB in the beginning and 179.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:15,237 INFO L168 Benchmark]: RCFGBuilder took 536.42 ms. Allocated memory is still 203.4 MB. Free memory was 179.3 MB in the beginning and 150.8 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:15,237 INFO L168 Benchmark]: TraceAbstraction took 1224.71 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 150.1 MB in the beginning and 193.8 MB in the end (delta: -43.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 19:17:15,242 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 425.11 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 181.7 MB in the end (delta: -80.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.08 ms. Allocated memory is still 203.4 MB. Free memory was 181.7 MB in the beginning and 179.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 536.42 ms. Allocated memory is still 203.4 MB. Free memory was 179.3 MB in the beginning and 150.8 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1224.71 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 150.1 MB in the beginning and 193.8 MB in the end (delta: -43.7 MB). There was no memory consumed. 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 someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, 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 FALSE !(j0 < 20) [L47] COND TRUE j0 > 51 [L48] COND TRUE j0 == 0x400 [L49] return x + 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, 115 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 126 SDtfs, 19 SDslu, 97 SDs, 0 SdLazy, 137 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred 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, 0.3s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 1705 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...