/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:22:11,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:22:11,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:22:11,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:22:11,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:22:11,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:22:11,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:22:11,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:22:11,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:22:11,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:22:11,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:22:11,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:22:11,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:22:11,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:22:11,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:22:11,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:22:11,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:22:11,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:22:11,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:22:11,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:22:11,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:22:11,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:22:11,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:22:11,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:22:11,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:22:11,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:22:11,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:22:11,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:22:11,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:22:11,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:22:11,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:22:11,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:22:11,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:22:11,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:22:11,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:22:11,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:22:11,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:22:11,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:22:11,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:22:11,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:22:11,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:22:11,333 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 01:22:11,373 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:22:11,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:22:11,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:22:11,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:22:11,378 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:22:11,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:22:11,378 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:22:11,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:22:11,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:22:11,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:22:11,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:22:11,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:22:11,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:22:11,379 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:22:11,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:22:11,381 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:22:11,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:22:11,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:22:11,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:22:11,382 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:22:11,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:22:11,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:22:11,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:22:11,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:22:11,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:22:11,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:22:11,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:22:11,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:22:11,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:22:11,384 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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:22:11,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:22:11,687 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:22:11,691 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:22:11,692 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:22:11,693 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:22:11,693 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-22 01:22:11,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33aa9715e/cf695a7a80fd468ab9dd824a3d991907/FLAG6ca61d3a9 [2020-08-22 01:22:12,293 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:22:12,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-22 01:22:12,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33aa9715e/cf695a7a80fd468ab9dd824a3d991907/FLAG6ca61d3a9 [2020-08-22 01:22:12,569 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33aa9715e/cf695a7a80fd468ab9dd824a3d991907 [2020-08-22 01:22:12,578 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:22:12,580 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:22:12,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:22:12,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:22:12,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:22:12,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:22:12" (1/1) ... [2020-08-22 01:22:12,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d97385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:12, skipping insertion in model container [2020-08-22 01:22:12,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:22:12" (1/1) ... [2020-08-22 01:22:12,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:22:12,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:22:12,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:22:12,826 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:22:12,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:22:12,880 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:22:12,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:12 WrapperNode [2020-08-22 01:22:12,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:22:12,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:22:12,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:22:12,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:22:12,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:12" (1/1) ... [2020-08-22 01:22:12,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:12" (1/1) ... [2020-08-22 01:22:12,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:12" (1/1) ... [2020-08-22 01:22:12,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:12" (1/1) ... [2020-08-22 01:22:13,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:12" (1/1) ... [2020-08-22 01:22:13,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:12" (1/1) ... [2020-08-22 01:22:13,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:12" (1/1) ... [2020-08-22 01:22:13,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:22:13,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:22:13,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:22:13,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:22:13,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:12" (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 01:22:13,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:22:13,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:22:13,092 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 01:22:13,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-22 01:22:13,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:22:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:22:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 01:22:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-22 01:22:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:22:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 01:22:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:22:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:22:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:22:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 01:22:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:22:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:22:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:22:13,501 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:22:13,501 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 01:22:13,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:22:13 BoogieIcfgContainer [2020-08-22 01:22:13,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:22:13,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:22:13,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:22:13,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:22:13,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:22:12" (1/3) ... [2020-08-22 01:22:13,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e358957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:22:13, skipping insertion in model container [2020-08-22 01:22:13,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:12" (2/3) ... [2020-08-22 01:22:13,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e358957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:22:13, skipping insertion in model container [2020-08-22 01:22:13,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:22:13" (3/3) ... [2020-08-22 01:22:13,515 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-08-22 01:22:13,526 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:22:13,539 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:22:13,555 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:22:13,579 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:22:13,579 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:22:13,579 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:22:13,580 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:22:13,580 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:22:13,580 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:22:13,580 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:22:13,580 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:22:13,598 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-22 01:22:13,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 01:22:13,605 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:22:13,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:22:13,606 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:22:13,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:22:13,612 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-08-22 01:22:13,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:22:13,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566388923] [2020-08-22 01:22:13,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:22:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:13,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:22:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:13,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:22:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:13,867 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 01:22:13,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566388923] [2020-08-22 01:22:13,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:22:13,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:22:13,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833726799] [2020-08-22 01:22:13,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:22:13,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:22:13,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:22:13,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:22:13,895 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-22 01:22:14,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:22:14,139 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-08-22 01:22:14,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 01:22:14,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-08-22 01:22:14,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:22:14,153 INFO L225 Difference]: With dead ends: 76 [2020-08-22 01:22:14,153 INFO L226 Difference]: Without dead ends: 38 [2020-08-22 01:22:14,157 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 01:22:14,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-22 01:22:14,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-22 01:22:14,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-22 01:22:14,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-08-22 01:22:14,200 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-08-22 01:22:14,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:22:14,201 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-08-22 01:22:14,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:22:14,201 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-08-22 01:22:14,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 01:22:14,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:22:14,203 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 01:22:14,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:22:14,203 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:22:14,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:22:14,204 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-08-22 01:22:14,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:22:14,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704209563] [2020-08-22 01:22:14,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:22:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 01:22:14,253 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 01:22:14,254 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 01:22:14,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:22:14,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 01:22:14 BoogieIcfgContainer [2020-08-22 01:22:14,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 01:22:14,278 INFO L168 Benchmark]: Toolchain (without parser) took 1697.74 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 98.8 MB in the beginning and 110.9 MB in the end (delta: -12.1 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:14,279 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 01:22:14,280 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.38 ms. Allocated memory is still 137.4 MB. Free memory was 98.6 MB in the beginning and 87.2 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:14,281 INFO L168 Benchmark]: Boogie Preprocessor took 140.08 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 87.2 MB in the beginning and 179.0 MB in the end (delta: -91.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:14,282 INFO L168 Benchmark]: RCFGBuilder took 483.59 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 156.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:14,283 INFO L168 Benchmark]: TraceAbstraction took 768.70 ms. Allocated memory is still 201.9 MB. Free memory was 156.4 MB in the beginning and 110.9 MB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:14,288 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 296.38 ms. Allocated memory is still 137.4 MB. Free memory was 98.6 MB in the beginning and 87.2 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 140.08 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 87.2 MB in the beginning and 179.0 MB in the end (delta: -91.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 483.59 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 156.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 768.70 ms. Allocated memory is still 201.9 MB. Free memory was 156.4 MB in the beginning and 110.9 MB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someUnaryDOUBLEoperation at line 91, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 95. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L91] double x = -0.0; [L92] CALL, EXPR ceil_double(x) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; [L92] RET, EXPR ceil_double(x) [L92] double res = ceil_double(x); [L95] COND TRUE res != x [L96] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 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: 52 SDtfs, 47 SDslu, 5 SDs, 0 SdLazy, 55 SolverSat, 7 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=42occurred 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, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 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...