/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 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_1251b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:04:27,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:04:27,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:04:27,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:04:27,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:04:27,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:04:27,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:04:27,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:04:27,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:04:27,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:04:27,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:04:27,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:04:27,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:04:27,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:04:27,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:04:27,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:04:27,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:04:27,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:04:27,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:04:27,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:04:27,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:04:27,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:04:27,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:04:27,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:04:27,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:04:27,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:04:27,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:04:27,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:04:27,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:04:27,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 14:04:27,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:04:27,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:04:27,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:04:27,375 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 [2020-08-21 14:04:27,426 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:04:27,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:04:27,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:04:27,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:04:27,428 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:04:27,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:04:27,431 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:04:27,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:04:27,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:04:27,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:04:27,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:04:27,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:04:27,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:04:27,433 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:04:27,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:04:27,433 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:04:27,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:04:27,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:04:27,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:04:27,434 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:04:27,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:04:27,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:04:27,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:04:27,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:04:27,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:04:27,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:04:27,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:04:27,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:04:27,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:04:27,437 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 -> log-additional-information=true; [2020-08-21 14:04:27,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:04:27,766 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:04:27,772 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:04:27,774 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:04:27,775 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:04:27,775 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-08-21 14:04:27,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/899f767e0/8c0b3947c5e7409994071a075e176dc8/FLAG2dcbdec67 [2020-08-21 14:04:28,346 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:04:28,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-08-21 14:04:28,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/899f767e0/8c0b3947c5e7409994071a075e176dc8/FLAG2dcbdec67 [2020-08-21 14:04:28,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/899f767e0/8c0b3947c5e7409994071a075e176dc8 [2020-08-21 14:04:28,721 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:04:28,723 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:04:28,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:04:28,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:04:28,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:04:28,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:04:28" (1/1) ... [2020-08-21 14:04:28,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231fe863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:28, skipping insertion in model container [2020-08-21 14:04:28,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:04:28" (1/1) ... [2020-08-21 14:04:28,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:04:28,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:04:29,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:04:29,005 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:04:29,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:04:29,061 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:04:29,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:29 WrapperNode [2020-08-21 14:04:29,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:04:29,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:04:29,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:04:29,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:04:29,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:29" (1/1) ... [2020-08-21 14:04:29,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:29" (1/1) ... [2020-08-21 14:04:29,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:29" (1/1) ... [2020-08-21 14:04:29,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:29" (1/1) ... [2020-08-21 14:04:29,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:29" (1/1) ... [2020-08-21 14:04:29,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:29" (1/1) ... [2020-08-21 14:04:29,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:29" (1/1) ... [2020-08-21 14:04:29,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:04:29,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:04:29,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:04:29,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:04:29,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:29" (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 [2020-08-21 14:04:29,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:04:29,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:04:29,281 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 14:04:29,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-08-21 14:04:29,281 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-08-21 14:04:29,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:04:29,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:04:29,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-21 14:04:29,283 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 14:04:29,283 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-08-21 14:04:29,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:04:29,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 14:04:29,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:04:29,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:04:29,285 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-08-21 14:04:29,285 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:04:29,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:04:29,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:04:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:04:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 14:04:29,590 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:04:29,590 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-21 14:04:29,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:04:29 BoogieIcfgContainer [2020-08-21 14:04:29,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:04:29,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:04:29,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:04:29,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:04:29,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:04:28" (1/3) ... [2020-08-21 14:04:29,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfafb23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:04:29, skipping insertion in model container [2020-08-21 14:04:29,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:29" (2/3) ... [2020-08-21 14:04:29,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfafb23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:04:29, skipping insertion in model container [2020-08-21 14:04:29,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:04:29" (3/3) ... [2020-08-21 14:04:29,603 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2020-08-21 14:04:29,620 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:04:29,636 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:04:29,667 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:04:29,702 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:04:29,703 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:04:29,703 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:04:29,703 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:04:29,703 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:04:29,704 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:04:29,704 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:04:29,704 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:04:29,722 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-21 14:04:29,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 14:04:29,728 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:04:29,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:04:29,729 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:04:29,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:04:29,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1800374877, now seen corresponding path program 1 times [2020-08-21 14:04:29,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:04:29,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714393825] [2020-08-21 14:04:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:04:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:29,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:04:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:29,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:04:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:29,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:04:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:30,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:04:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:30,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:04:30,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714393825] [2020-08-21 14:04:30,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:04:30,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:04:30,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984978469] [2020-08-21 14:04:30,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:04:30,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:04:30,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:04:30,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:04:30,057 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-21 14:04:30,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:04:30,254 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2020-08-21 14:04:30,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 14:04:30,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-08-21 14:04:30,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:04:30,267 INFO L225 Difference]: With dead ends: 72 [2020-08-21 14:04:30,268 INFO L226 Difference]: Without dead ends: 37 [2020-08-21 14:04:30,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 14:04:30,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-21 14:04:30,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-21 14:04:30,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-21 14:04:30,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2020-08-21 14:04:30,324 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 27 [2020-08-21 14:04:30,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:04:30,325 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2020-08-21 14:04:30,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:04:30,325 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2020-08-21 14:04:30,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 14:04:30,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:04:30,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:04:30,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:04:30,328 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:04:30,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:04:30,329 INFO L82 PathProgramCache]: Analyzing trace with hash 283227385, now seen corresponding path program 1 times [2020-08-21 14:04:30,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:04:30,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454751619] [2020-08-21 14:04:30,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:04:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:30,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:04:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:30,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:04:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:30,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:04:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:30,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:04:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:04:30,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454751619] [2020-08-21 14:04:30,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:04:30,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 14:04:30,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089631449] [2020-08-21 14:04:30,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 14:04:30,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:04:30,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 14:04:30,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:04:30,538 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 6 states. [2020-08-21 14:04:30,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:04:30,802 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2020-08-21 14:04:30,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 14:04:30,802 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-21 14:04:30,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:04:30,806 INFO L225 Difference]: With dead ends: 47 [2020-08-21 14:04:30,806 INFO L226 Difference]: Without dead ends: 41 [2020-08-21 14:04:30,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:04:30,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-08-21 14:04:30,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-08-21 14:04:30,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-21 14:04:30,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-08-21 14:04:30,820 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2020-08-21 14:04:30,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:04:30,820 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-08-21 14:04:30,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 14:04:30,821 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-08-21 14:04:30,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-21 14:04:30,822 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:04:30,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:04:30,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:04:30,823 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:04:30,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:04:30,824 INFO L82 PathProgramCache]: Analyzing trace with hash 827998108, now seen corresponding path program 1 times [2020-08-21 14:04:30,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:04:30,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175873403] [2020-08-21 14:04:30,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:04:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:30,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:04:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:30,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:04:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:30,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:04:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:30,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:04:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:04:30,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175873403] [2020-08-21 14:04:30,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:04:30,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 14:04:30,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789599147] [2020-08-21 14:04:30,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 14:04:30,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:04:30,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 14:04:30,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:04:30,994 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-08-21 14:04:31,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:04:31,221 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-08-21 14:04:31,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 14:04:31,221 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-08-21 14:04:31,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:04:31,223 INFO L225 Difference]: With dead ends: 51 [2020-08-21 14:04:31,223 INFO L226 Difference]: Without dead ends: 45 [2020-08-21 14:04:31,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:04:31,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-21 14:04:31,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-08-21 14:04:31,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-21 14:04:31,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-08-21 14:04:31,234 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2020-08-21 14:04:31,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:04:31,234 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-08-21 14:04:31,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 14:04:31,235 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-08-21 14:04:31,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-21 14:04:31,236 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:04:31,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:04:31,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:04:31,237 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:04:31,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:04:31,237 INFO L82 PathProgramCache]: Analyzing trace with hash 631484603, now seen corresponding path program 1 times [2020-08-21 14:04:31,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:04:31,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748569480] [2020-08-21 14:04:31,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:04:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:04:31,271 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:04:31,271 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:04:31,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:04:31,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:04:31 BoogieIcfgContainer [2020-08-21 14:04:31,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:04:31,304 INFO L168 Benchmark]: Toolchain (without parser) took 2578.08 ms. Allocated memory was 138.4 MB in the beginning and 231.7 MB in the end (delta: 93.3 MB). Free memory was 101.9 MB in the beginning and 144.2 MB in the end (delta: -42.3 MB). Peak memory consumption was 51.0 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:31,305 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 14:04:31,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.43 ms. Allocated memory is still 138.4 MB. Free memory was 101.7 MB in the beginning and 90.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:31,308 INFO L168 Benchmark]: Boogie Preprocessor took 152.67 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 90.6 MB in the beginning and 177.4 MB in the end (delta: -86.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:31,309 INFO L168 Benchmark]: RCFGBuilder took 378.17 ms. Allocated memory is still 200.3 MB. Free memory was 177.4 MB in the beginning and 157.9 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:31,317 INFO L168 Benchmark]: TraceAbstraction took 1703.06 ms. Allocated memory was 200.3 MB in the beginning and 231.7 MB in the end (delta: 31.5 MB). Free memory was 157.2 MB in the beginning and 144.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 44.5 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:31,328 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 339.43 ms. Allocated memory is still 138.4 MB. Free memory was 101.7 MB in the beginning and 90.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 152.67 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 90.6 MB in the beginning and 177.4 MB in the end (delta: -86.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 378.17 ms. Allocated memory is still 200.3 MB. Free memory was 177.4 MB in the beginning and 157.9 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1703.06 ms. Allocated memory was 200.3 MB in the beginning and 231.7 MB in the end (delta: 31.5 MB). Free memory was 157.2 MB in the beginning and 144.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 44.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 78]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 77, overapproximation of someBinaryArithmeticDOUBLEoperation at line 65. Possible FailurePath: [L64] double x = __VERIFIER_nondet_double(); [L65] double y = 0.0 / 0.0; [L72] CALL, EXPR isnan_double(x) [L16] return x != x; [L72] RET, EXPR isnan_double(x) [L72] COND TRUE !isnan_double(x) [L74] CALL, EXPR fmax_double(x, y) [L55] CALL, EXPR __fpclassify_double(x) [L27] __uint32_t msw, lsw; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; [L55] RET, EXPR __fpclassify_double(x) [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; [L74] RET, EXPR fmax_double(x, y) [L74] double res = fmax_double(x, y); [L77] COND TRUE res != x [L78] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 116 SDtfs, 124 SDslu, 43 SDs, 0 SdLazy, 254 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 5500 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...