/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:25:36,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:25:36,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:25:36,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:25:36,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:25:36,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:25:36,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:25:36,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:25:36,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:25:36,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:25:36,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:25:36,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:25:36,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:25:36,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:25:36,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:25:36,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:25:36,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:25:36,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:25:36,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:25:36,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:25:36,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:25:36,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:25:36,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:25:36,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:25:36,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:25:36,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:25:36,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:25:36,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:25:36,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:25:36,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:25:36,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:25:36,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:25:36,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:25:36,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:25:36,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:25:36,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:25:36,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:25:36,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:25:36,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:25:36,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:25:36,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:25:36,621 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 [2020-08-18 15:25:36,663 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:25:36,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:25:36,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:25:36,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:25:36,666 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:25:36,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:25:36,667 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:25:36,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:25:36,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:25:36,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:25:36,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:25:36,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:25:36,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:25:36,670 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:25:36,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:25:36,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:25:36,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:25:36,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:25:36,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:25:36,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:25:36,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:25:36,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:25:36,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:25:36,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:25:36,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:25:36,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:25:36,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:25:36,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:25:36,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:25:36,673 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 -> false [2020-08-18 15:25:37,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:25:37,022 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:25:37,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:25:37,028 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:25:37,029 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:25:37,029 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092b.c [2020-08-18 15:25:37,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbdcbbc73/495e67d416b94fc98f1099262e9afa28/FLAGdeca2054e [2020-08-18 15:25:37,569 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:25:37,570 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092b.c [2020-08-18 15:25:37,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbdcbbc73/495e67d416b94fc98f1099262e9afa28/FLAGdeca2054e [2020-08-18 15:25:37,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbdcbbc73/495e67d416b94fc98f1099262e9afa28 [2020-08-18 15:25:37,940 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:25:37,942 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:25:37,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:25:37,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:25:37,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:25:37,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:25:37" (1/1) ... [2020-08-18 15:25:37,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510a549d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:37, skipping insertion in model container [2020-08-18 15:25:37,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:25:37" (1/1) ... [2020-08-18 15:25:37,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:25:37,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:25:38,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:25:38,210 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:25:38,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:25:38,356 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:25:38,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:38 WrapperNode [2020-08-18 15:25:38,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:25:38,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:25:38,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:25:38,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:25:38,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:38" (1/1) ... [2020-08-18 15:25:38,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:38" (1/1) ... [2020-08-18 15:25:38,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:38" (1/1) ... [2020-08-18 15:25:38,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:38" (1/1) ... [2020-08-18 15:25:38,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:38" (1/1) ... [2020-08-18 15:25:38,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:38" (1/1) ... [2020-08-18 15:25:38,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:38" (1/1) ... [2020-08-18 15:25:38,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:25:38,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:25:38,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:25:38,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:25:38,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:38" (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 [2020-08-18 15:25:38,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:25:38,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:25:38,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 15:25:38,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-18 15:25:38,463 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:25:38,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:25:38,464 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 15:25:38,464 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-18 15:25:38,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:25:38,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 15:25:38,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:25:38,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:25:38,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:25:38,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 15:25:38,465 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:25:38,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:25:38,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:25:38,808 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:25:38,809 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 15:25:38,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:25:38 BoogieIcfgContainer [2020-08-18 15:25:38,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:25:38,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:25:38,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:25:38,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:25:38,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:25:37" (1/3) ... [2020-08-18 15:25:38,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1b94ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:25:38, skipping insertion in model container [2020-08-18 15:25:38,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:38" (2/3) ... [2020-08-18 15:25:38,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1b94ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:25:38, skipping insertion in model container [2020-08-18 15:25:38,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:25:38" (3/3) ... [2020-08-18 15:25:38,828 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092b.c [2020-08-18 15:25:38,842 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:25:38,850 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:25:38,868 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:25:38,900 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:25:38,901 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:25:38,901 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:25:38,901 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:25:38,901 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:25:38,901 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:25:38,902 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:25:38,902 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:25:38,937 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-18 15:25:38,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 15:25:38,955 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:25:38,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:25:38,957 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:25:38,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:25:38,976 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-08-18 15:25:38,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:25:38,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414596553] [2020-08-18 15:25:39,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:25:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:39,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:25:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:39,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:25:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:39,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:25:39,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414596553] [2020-08-18 15:25:39,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:25:39,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:25:39,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425652959] [2020-08-18 15:25:39,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:25:39,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:25:39,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:25:39,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:25:39,286 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-18 15:25:39,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:25:39,555 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-08-18 15:25:39,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 15:25:39,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-08-18 15:25:39,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:25:39,577 INFO L225 Difference]: With dead ends: 76 [2020-08-18 15:25:39,578 INFO L226 Difference]: Without dead ends: 38 [2020-08-18 15:25:39,583 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 [2020-08-18 15:25:39,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-18 15:25:39,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-18 15:25:39,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-18 15:25:39,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-08-18 15:25:39,630 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-08-18 15:25:39,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:25:39,631 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-08-18 15:25:39,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:25:39,631 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-08-18 15:25:39,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 15:25:39,632 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:25:39,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:25:39,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:25:39,633 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:25:39,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:25:39,634 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-08-18 15:25:39,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:25:39,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131163767] [2020-08-18 15:25:39,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:25:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 15:25:39,681 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 15:25:39,681 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 15:25:39,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:25:39,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:25:39 BoogieIcfgContainer [2020-08-18 15:25:39,702 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:25:39,705 INFO L168 Benchmark]: Toolchain (without parser) took 1762.34 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.0 MB in the beginning and 112.2 MB in the end (delta: -9.2 MB). Peak memory consumption was 53.7 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:39,706 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 15:25:39,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.21 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 182.0 MB in the end (delta: -79.4 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:39,709 INFO L168 Benchmark]: Boogie Preprocessor took 45.00 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 179.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:39,709 INFO L168 Benchmark]: RCFGBuilder took 412.82 ms. Allocated memory is still 203.9 MB. Free memory was 179.5 MB in the beginning and 157.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:39,710 INFO L168 Benchmark]: TraceAbstraction took 885.44 ms. Allocated memory is still 203.9 MB. Free memory was 157.1 MB in the beginning and 112.2 MB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:39,715 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 414.21 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 182.0 MB in the end (delta: -79.4 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.00 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 179.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 412.82 ms. Allocated memory is still 203.9 MB. Free memory was 179.5 MB in the beginning and 157.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 885.44 ms. Allocated memory is still 203.9 MB. Free memory was 157.1 MB in the beginning and 112.2 MB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 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 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: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, 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...