/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:54:52,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:54:52,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:54:52,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:54:52,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:54:52,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:54:52,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:54:52,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:54:52,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:54:52,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:54:52,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:54:52,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:54:52,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:54:52,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:54:52,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:54:52,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:54:52,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:54:52,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:54:52,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:54:52,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:54:52,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:54:52,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:54:52,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:54:52,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:54:52,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:54:52,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:54:52,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:54:52,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:54:52,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:54:52,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 01:54:52,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:54:52,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:54:52,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:54:52,579 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 [2020-08-19 01:54:52,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:54:52,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:54:52,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:54:52,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:54:52,620 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:54:52,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:54:52,620 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:54:52,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:54:52,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:54:52,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:54:52,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:54:52,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:54:52,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:54:52,623 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:54:52,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:54:52,623 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:54:52,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:54:52,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:54:52,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:54:52,624 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:54:52,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:54:52,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:54:52,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:54:52,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:54:52,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:54:52,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:54:52,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:54:52,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:54:52,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:54:52,626 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=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:54:52,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:54:52,984 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:54:52,987 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:54:52,989 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:54:52,989 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:54:52,990 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-08-19 01:54:53,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/316f65e12/aa0b22ba28ad4cebad51a80ada249a09/FLAG95dec858c [2020-08-19 01:54:53,584 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:54:53,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-08-19 01:54:53,593 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/316f65e12/aa0b22ba28ad4cebad51a80ada249a09/FLAG95dec858c [2020-08-19 01:54:53,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/316f65e12/aa0b22ba28ad4cebad51a80ada249a09 [2020-08-19 01:54:53,989 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:54:53,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:54:53,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:54:53,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:54:53,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:54:53,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:54:53" (1/1) ... [2020-08-19 01:54:54,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634f0049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:53, skipping insertion in model container [2020-08-19 01:54:54,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:54:53" (1/1) ... [2020-08-19 01:54:54,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:54:54,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:54:54,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:54:54,246 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:54:54,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:54:54,396 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:54:54,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:54 WrapperNode [2020-08-19 01:54:54,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:54:54,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:54:54,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:54:54,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:54:54,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:54" (1/1) ... [2020-08-19 01:54:54,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:54" (1/1) ... [2020-08-19 01:54:54,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:54" (1/1) ... [2020-08-19 01:54:54,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:54" (1/1) ... [2020-08-19 01:54:54,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:54" (1/1) ... [2020-08-19 01:54:54,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:54" (1/1) ... [2020-08-19 01:54:54,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:54" (1/1) ... [2020-08-19 01:54:54,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:54:54,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:54:54,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:54:54,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:54:54,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:54" (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 [2020-08-19 01:54:54,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:54:54,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:54:54,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-08-19 01:54:54,494 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-08-19 01:54:54,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-19 01:54:54,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:54:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:54:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-19 01:54:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-08-19 01:54:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:54:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 01:54:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:54:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:54:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-08-19 01:54:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-19 01:54:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:54:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:54:54,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:54:54,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 01:54:54,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:54:54,884 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:54:54,885 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 01:54:54,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:54:54 BoogieIcfgContainer [2020-08-19 01:54:54,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:54:54,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:54:54,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:54:54,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:54:54,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:54:53" (1/3) ... [2020-08-19 01:54:54,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d24f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:54:54, skipping insertion in model container [2020-08-19 01:54:54,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:54" (2/3) ... [2020-08-19 01:54:54,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d24f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:54:54, skipping insertion in model container [2020-08-19 01:54:54,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:54:54" (3/3) ... [2020-08-19 01:54:54,897 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-08-19 01:54:54,907 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:54:54,915 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:54:54,927 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:54:54,947 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:54:54,947 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:54:54,947 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:54:54,947 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:54:54,947 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:54:54,947 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:54:54,948 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:54:54,948 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:54:54,963 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-08-19 01:54:54,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-19 01:54:54,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:54:54,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:54:54,971 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:54:54,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:54:54,976 INFO L82 PathProgramCache]: Analyzing trace with hash -592398611, now seen corresponding path program 1 times [2020-08-19 01:54:54,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:54:54,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511422213] [2020-08-19 01:54:54,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:54:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:55,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:55,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:54:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:55,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:54:55,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511422213] [2020-08-19 01:54:55,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:54:55,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:54:55,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760730204] [2020-08-19 01:54:55,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:54:55,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:54:55,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:54:55,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:54:55,247 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-08-19 01:54:55,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:54:55,532 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-08-19 01:54:55,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 01:54:55,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-08-19 01:54:55,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:54:55,545 INFO L225 Difference]: With dead ends: 79 [2020-08-19 01:54:55,545 INFO L226 Difference]: Without dead ends: 40 [2020-08-19 01:54:55,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:54:55,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-19 01:54:55,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-08-19 01:54:55,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-19 01:54:55,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-08-19 01:54:55,600 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-08-19 01:54:55,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:54:55,601 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-08-19 01:54:55,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:54:55,601 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-08-19 01:54:55,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 01:54:55,604 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:54:55,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:54:55,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:54:55,604 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:54:55,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:54:55,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1646954013, now seen corresponding path program 1 times [2020-08-19 01:54:55,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:54:55,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221096141] [2020-08-19 01:54:55,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:54:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:55,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:55,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:54:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:55,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:55,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:54:55,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221096141] [2020-08-19 01:54:55,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:54:55,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:54:55,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160479942] [2020-08-19 01:54:55,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:54:55,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:54:55,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:54:55,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:54:55,803 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-08-19 01:54:56,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:54:56,081 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-08-19 01:54:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 01:54:56,082 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-08-19 01:54:56,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:54:56,088 INFO L225 Difference]: With dead ends: 59 [2020-08-19 01:54:56,089 INFO L226 Difference]: Without dead ends: 44 [2020-08-19 01:54:56,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:54:56,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-19 01:54:56,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-19 01:54:56,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-19 01:54:56,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-19 01:54:56,120 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-08-19 01:54:56,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:54:56,121 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-19 01:54:56,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:54:56,121 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-19 01:54:56,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-19 01:54:56,123 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:54:56,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:54:56,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:54:56,125 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:54:56,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:54:56,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1003466516, now seen corresponding path program 1 times [2020-08-19 01:54:56,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:54:56,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33088888] [2020-08-19 01:54:56,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:54:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:56,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:56,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:54:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:56,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:56,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:54:56,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33088888] [2020-08-19 01:54:56,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:54:56,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:54:56,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577747137] [2020-08-19 01:54:56,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:54:56,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:54:56,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:54:56,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:54:56,304 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-08-19 01:54:56,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:54:56,533 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-08-19 01:54:56,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 01:54:56,534 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-08-19 01:54:56,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:54:56,535 INFO L225 Difference]: With dead ends: 63 [2020-08-19 01:54:56,535 INFO L226 Difference]: Without dead ends: 48 [2020-08-19 01:54:56,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:54:56,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-19 01:54:56,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-08-19 01:54:56,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-19 01:54:56,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-19 01:54:56,547 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-08-19 01:54:56,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:54:56,547 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-19 01:54:56,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:54:56,548 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-19 01:54:56,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-19 01:54:56,549 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:54:56,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:54:56,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:54:56,550 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:54:56,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:54:56,550 INFO L82 PathProgramCache]: Analyzing trace with hash -793484843, now seen corresponding path program 1 times [2020-08-19 01:54:56,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:54:56,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761825581] [2020-08-19 01:54:56,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:54:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:54:56,573 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:54:56,574 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:54:56,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:54:56,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:54:56 BoogieIcfgContainer [2020-08-19 01:54:56,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:54:56,600 INFO L168 Benchmark]: Toolchain (without parser) took 2608.41 ms. Allocated memory was 140.0 MB in the beginning and 234.4 MB in the end (delta: 94.4 MB). Free memory was 102.0 MB in the beginning and 138.0 MB in the end (delta: -36.0 MB). Peak memory consumption was 58.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:56,601 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 01:54:56,602 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.96 ms. Allocated memory was 140.0 MB in the beginning and 200.3 MB in the end (delta: 60.3 MB). Free memory was 101.5 MB in the beginning and 177.2 MB in the end (delta: -75.7 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:56,603 INFO L168 Benchmark]: Boogie Preprocessor took 40.19 ms. Allocated memory is still 200.3 MB. Free memory was 177.2 MB in the beginning and 175.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:56,604 INFO L168 Benchmark]: RCFGBuilder took 450.77 ms. Allocated memory is still 200.3 MB. Free memory was 175.3 MB in the beginning and 154.9 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:56,605 INFO L168 Benchmark]: TraceAbstraction took 1706.61 ms. Allocated memory was 200.3 MB in the beginning and 234.4 MB in the end (delta: 34.1 MB). Free memory was 154.3 MB in the beginning and 138.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:56,609 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 405.96 ms. Allocated memory was 140.0 MB in the beginning and 200.3 MB in the end (delta: 60.3 MB). Free memory was 101.5 MB in the beginning and 177.2 MB in the end (delta: -75.7 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.19 ms. Allocated memory is still 200.3 MB. Free memory was 177.2 MB in the beginning and 175.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.77 ms. Allocated memory is still 200.3 MB. Free memory was 175.3 MB in the beginning and 154.9 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1706.61 ms. Allocated memory was 200.3 MB in the beginning and 234.4 MB in the end (delta: 34.1 MB). Free memory was 154.3 MB in the beginning and 138.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 80. Possible FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; [L81] CALL, EXPR fmax_double(x, y) [L52] CALL, EXPR __fpclassify_double(x) [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; [L52] RET, EXPR __fpclassify_double(x) [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; [L81] RET, EXPR fmax_double(x, y) [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 117 SDslu, 43 SDs, 0 SdLazy, 296 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 4170 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...