/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=0.4 --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 05:25:13,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:25:13,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:25:13,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:25:13,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:25:13,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:25:13,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:25:13,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:25:13,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:25:13,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:25:13,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:25:13,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:25:13,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:25:13,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:25:13,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:25:13,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:25:13,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:25:13,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:25:13,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:25:13,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:25:13,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:25:13,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:25:13,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:25:13,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:25:13,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:25:13,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:25:13,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:25:13,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:25:13,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:25:13,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:25:13,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:25:13,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:25:13,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:25:13,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:25:13,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:25:13,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:25:13,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:25:13,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:25:13,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:25:13,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:25:13,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:25:13,501 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 05:25:13,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:25:13,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:25:13,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:25:13,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:25:13,533 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:25:13,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:25:13,533 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:25:13,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:25:13,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:25:13,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:25:13,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:25:13,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:25:13,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:25:13,534 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:25:13,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:25:13,536 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:25:13,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:25:13,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:25:13,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:25:13,537 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:25:13,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:25:13,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:25:13,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:25:13,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:25:13,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:25:13,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:25:13,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:25:13,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:25:13,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:25:13,539 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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-08-22 05:25:13,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:25:13,853 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:25:13,857 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:25:13,859 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:25:13,859 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:25:13,860 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-22 05:25:13,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c15958ab/cbef31b1698f494793d22c5a5c2ca53e/FLAG1a4d9770a [2020-08-22 05:25:14,346 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:25:14,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-22 05:25:14,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c15958ab/cbef31b1698f494793d22c5a5c2ca53e/FLAG1a4d9770a [2020-08-22 05:25:14,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c15958ab/cbef31b1698f494793d22c5a5c2ca53e [2020-08-22 05:25:14,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:25:14,768 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:25:14,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:25:14,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:25:14,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:25:14,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:25:14" (1/1) ... [2020-08-22 05:25:14,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3386436d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:14, skipping insertion in model container [2020-08-22 05:25:14,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:25:14" (1/1) ... [2020-08-22 05:25:14,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:25:14,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:25:15,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:25:15,058 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:25:15,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:25:15,208 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:25:15,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:15 WrapperNode [2020-08-22 05:25:15,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:25:15,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:25:15,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:25:15,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:25:15,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:15" (1/1) ... [2020-08-22 05:25:15,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:15" (1/1) ... [2020-08-22 05:25:15,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:15" (1/1) ... [2020-08-22 05:25:15,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:15" (1/1) ... [2020-08-22 05:25:15,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:15" (1/1) ... [2020-08-22 05:25:15,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:15" (1/1) ... [2020-08-22 05:25:15,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:15" (1/1) ... [2020-08-22 05:25:15,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:25:15,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:25:15,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:25:15,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:25:15,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:15" (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 05:25:15,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:25:15,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:25:15,319 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 05:25:15,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-22 05:25:15,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:25:15,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:25:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 05:25:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-22 05:25:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:25:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 05:25:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:25:15,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:25:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:25:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 05:25:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:25:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:25:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:25:15,656 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:25:15,656 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 05:25:15,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:25:15 BoogieIcfgContainer [2020-08-22 05:25:15,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:25:15,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:25:15,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:25:15,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:25:15,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:25:14" (1/3) ... [2020-08-22 05:25:15,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175c58a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:25:15, skipping insertion in model container [2020-08-22 05:25:15,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:25:15" (2/3) ... [2020-08-22 05:25:15,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175c58a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:25:15, skipping insertion in model container [2020-08-22 05:25:15,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:25:15" (3/3) ... [2020-08-22 05:25:15,673 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-08-22 05:25:15,688 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:25:15,697 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:25:15,717 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:25:15,768 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:25:15,768 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:25:15,768 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:25:15,769 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:25:15,772 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:25:15,772 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:25:15,772 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:25:15,772 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:25:15,801 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-22 05:25:15,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 05:25:15,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:25:15,810 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 05:25:15,811 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:25:15,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:25:15,818 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-08-22 05:25:15,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:25:15,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030634258] [2020-08-22 05:25:15,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:25:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:25:16,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:25:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:25:16,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:25:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:25:16,063 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 05:25:16,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030634258] [2020-08-22 05:25:16,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:25:16,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:25:16,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469645558] [2020-08-22 05:25:16,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:25:16,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:25:16,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:25:16,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:25:16,087 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-22 05:25:16,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:25:16,322 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-08-22 05:25:16,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 05:25:16,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-08-22 05:25:16,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:25:16,336 INFO L225 Difference]: With dead ends: 76 [2020-08-22 05:25:16,336 INFO L226 Difference]: Without dead ends: 38 [2020-08-22 05:25:16,340 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 05:25:16,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-22 05:25:16,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-22 05:25:16,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-22 05:25:16,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-08-22 05:25:16,382 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-08-22 05:25:16,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:25:16,383 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-08-22 05:25:16,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:25:16,383 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-08-22 05:25:16,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 05:25:16,384 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:25:16,384 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 05:25:16,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:25:16,385 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:25:16,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:25:16,385 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-08-22 05:25:16,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:25:16,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601722397] [2020-08-22 05:25:16,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:25:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 05:25:16,433 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 05:25:16,433 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:25:16,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:25:16,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:25:16 BoogieIcfgContainer [2020-08-22 05:25:16,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:25:16,461 INFO L168 Benchmark]: Toolchain (without parser) took 1692.44 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 103.9 MB in the beginning and 110.9 MB in the end (delta: -7.0 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. [2020-08-22 05:25:16,462 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 05:25:16,463 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.67 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 103.7 MB in the beginning and 180.3 MB in the end (delta: -76.6 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-08-22 05:25:16,463 INFO L168 Benchmark]: Boogie Preprocessor took 43.36 ms. Allocated memory is still 203.4 MB. Free memory was 180.3 MB in the beginning and 178.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-22 05:25:16,464 INFO L168 Benchmark]: RCFGBuilder took 409.74 ms. Allocated memory is still 203.4 MB. Free memory was 178.4 MB in the beginning and 156.8 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-08-22 05:25:16,465 INFO L168 Benchmark]: TraceAbstraction took 791.31 ms. Allocated memory is still 203.4 MB. Free memory was 156.2 MB in the beginning and 110.9 MB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. [2020-08-22 05:25:16,470 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 439.67 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 103.7 MB in the beginning and 180.3 MB in the end (delta: -76.6 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.36 ms. Allocated memory is still 203.4 MB. Free memory was 180.3 MB in the beginning and 178.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 409.74 ms. Allocated memory is still 203.4 MB. Free memory was 178.4 MB in the beginning and 156.8 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 791.31 ms. Allocated memory is still 203.4 MB. Free memory was 156.2 MB in the beginning and 110.9 MB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 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...