/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_1251b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:47:16,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:47:16,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:47:16,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:47:16,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:47:16,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:47:16,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:47:16,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:47:16,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:47:16,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:47:16,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:47:16,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:47:16,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:47:16,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:47:16,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:47:16,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:47:16,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:47:16,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:47:16,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:47:16,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:47:16,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:47:16,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:47:16,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:47:16,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:47:16,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:47:16,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:47:16,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:47:16,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:47:16,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:47:16,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-27 21:47:16,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:47:16,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:47:16,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:47:16,365 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 [2020-08-27 21:47:16,416 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:47:16,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:47:16,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:47:16,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:47:16,419 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:47:16,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:47:16,419 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:47:16,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:47:16,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:47:16,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:47:16,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:47:16,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:47:16,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:47:16,422 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:47:16,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:47:16,423 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:47:16,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:47:16,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:47:16,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:47:16,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:47:16,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:47:16,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:47:16,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:47:16,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:47:16,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:47:16,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:47:16,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:47:16,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:47:16,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:47:16,426 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 [2020-08-27 21:47:16,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:47:16,929 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:47:16,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:47:16,936 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:47:16,936 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:47:16,938 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-08-27 21:47:17,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e19081c1/3881394aa8f1439693aa2aa1bd6cb5a9/FLAG2e32562d6 [2020-08-27 21:47:17,628 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:47:17,629 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-08-27 21:47:17,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e19081c1/3881394aa8f1439693aa2aa1bd6cb5a9/FLAG2e32562d6 [2020-08-27 21:47:17,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e19081c1/3881394aa8f1439693aa2aa1bd6cb5a9 [2020-08-27 21:47:17,947 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:47:17,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:47:17,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:47:17,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:47:17,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:47:17,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:47:17" (1/1) ... [2020-08-27 21:47:17,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2869c26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:17, skipping insertion in model container [2020-08-27 21:47:17,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:47:17" (1/1) ... [2020-08-27 21:47:17,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:47:17,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:47:18,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:47:18,264 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:47:18,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:47:18,320 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:47:18,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:18 WrapperNode [2020-08-27 21:47:18,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:47:18,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:47:18,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:47:18,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:47:18,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:18" (1/1) ... [2020-08-27 21:47:18,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:18" (1/1) ... [2020-08-27 21:47:18,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:18" (1/1) ... [2020-08-27 21:47:18,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:18" (1/1) ... [2020-08-27 21:47:18,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:18" (1/1) ... [2020-08-27 21:47:18,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:18" (1/1) ... [2020-08-27 21:47:18,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:18" (1/1) ... [2020-08-27 21:47:18,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:47:18,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:47:18,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:47:18,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:47:18,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:18" (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 [2020-08-27 21:47:18,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:47:18,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:47:18,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-27 21:47:18,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-08-27 21:47:18,530 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-08-27 21:47:18,531 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:47:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:47:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-27 21:47:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-27 21:47:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-08-27 21:47:18,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:47:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-27 21:47:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:47:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:47:18,532 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-08-27 21:47:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:47:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:47:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:47:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:47:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-27 21:47:18,914 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:47:18,914 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-27 21:47:18,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:47:18 BoogieIcfgContainer [2020-08-27 21:47:18,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:47:18,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:47:18,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:47:18,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:47:18,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:47:17" (1/3) ... [2020-08-27 21:47:18,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba9a33d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:47:18, skipping insertion in model container [2020-08-27 21:47:18,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:18" (2/3) ... [2020-08-27 21:47:18,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba9a33d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:47:18, skipping insertion in model container [2020-08-27 21:47:18,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:47:18" (3/3) ... [2020-08-27 21:47:18,928 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2020-08-27 21:47:18,938 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:47:18,947 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:47:18,966 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:47:18,993 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:47:18,993 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:47:18,993 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:47:18,993 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:47:18,993 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:47:18,994 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:47:18,994 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:47:18,994 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:47:19,015 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-27 21:47:19,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-27 21:47:19,023 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:47:19,024 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] [2020-08-27 21:47:19,024 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:47:19,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:47:19,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1800374877, now seen corresponding path program 1 times [2020-08-27 21:47:19,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:47:19,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147799378] [2020-08-27 21:47:19,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:47:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:19,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:47:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:19,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:47:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:19,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:47:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:19,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:47:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:47:19,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147799378] [2020-08-27 21:47:19,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:47:19,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:47:19,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533666998] [2020-08-27 21:47:19,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:47:19,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:47:19,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:47:19,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:47:19,338 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-27 21:47:19,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:47:19,560 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2020-08-27 21:47:19,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-27 21:47:19,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-08-27 21:47:19,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:47:19,576 INFO L225 Difference]: With dead ends: 72 [2020-08-27 21:47:19,576 INFO L226 Difference]: Without dead ends: 37 [2020-08-27 21:47:19,581 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 [2020-08-27 21:47:19,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-27 21:47:19,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-27 21:47:19,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-27 21:47:19,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2020-08-27 21:47:19,637 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 27 [2020-08-27 21:47:19,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:47:19,644 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2020-08-27 21:47:19,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:47:19,645 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2020-08-27 21:47:19,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-27 21:47:19,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:47:19,649 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] [2020-08-27 21:47:19,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:47:19,650 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:47:19,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:47:19,651 INFO L82 PathProgramCache]: Analyzing trace with hash 283227385, now seen corresponding path program 1 times [2020-08-27 21:47:19,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:47:19,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337901682] [2020-08-27 21:47:19,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:47:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:19,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:47:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:19,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:47:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:19,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:47:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:19,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:47:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:47:19,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337901682] [2020-08-27 21:47:19,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:47:19,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-27 21:47:19,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294446003] [2020-08-27 21:47:19,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-27 21:47:19,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:47:19,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-27 21:47:19,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:47:19,899 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 6 states. [2020-08-27 21:47:20,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:47:20,164 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2020-08-27 21:47:20,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-27 21:47:20,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-27 21:47:20,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:47:20,169 INFO L225 Difference]: With dead ends: 47 [2020-08-27 21:47:20,169 INFO L226 Difference]: Without dead ends: 41 [2020-08-27 21:47:20,170 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 [2020-08-27 21:47:20,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-08-27 21:47:20,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-08-27 21:47:20,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-27 21:47:20,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-08-27 21:47:20,184 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2020-08-27 21:47:20,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:47:20,185 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-08-27 21:47:20,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-27 21:47:20,185 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-08-27 21:47:20,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-27 21:47:20,186 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:47:20,186 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] [2020-08-27 21:47:20,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:47:20,187 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:47:20,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:47:20,188 INFO L82 PathProgramCache]: Analyzing trace with hash 827998108, now seen corresponding path program 1 times [2020-08-27 21:47:20,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:47:20,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674101727] [2020-08-27 21:47:20,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:47:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:20,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:47:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:20,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:47:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:20,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:47:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:20,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:47:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:47:20,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674101727] [2020-08-27 21:47:20,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:47:20,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-27 21:47:20,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049777042] [2020-08-27 21:47:20,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-27 21:47:20,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:47:20,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-27 21:47:20,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:47:20,382 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-08-27 21:47:20,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:47:20,573 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-08-27 21:47:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-27 21:47:20,574 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-08-27 21:47:20,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:47:20,576 INFO L225 Difference]: With dead ends: 51 [2020-08-27 21:47:20,576 INFO L226 Difference]: Without dead ends: 45 [2020-08-27 21:47:20,577 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 [2020-08-27 21:47:20,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-27 21:47:20,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-08-27 21:47:20,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-27 21:47:20,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-08-27 21:47:20,586 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2020-08-27 21:47:20,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:47:20,587 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-08-27 21:47:20,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-27 21:47:20,587 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-08-27 21:47:20,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-27 21:47:20,590 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:47:20,591 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] [2020-08-27 21:47:20,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:47:20,591 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:47:20,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:47:20,592 INFO L82 PathProgramCache]: Analyzing trace with hash 631484603, now seen corresponding path program 1 times [2020-08-27 21:47:20,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:47:20,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837253551] [2020-08-27 21:47:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:47:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-27 21:47:20,619 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-27 21:47:20,619 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-27 21:47:20,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:47:20,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:47:20 BoogieIcfgContainer [2020-08-27 21:47:20,646 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-27 21:47:20,650 INFO L168 Benchmark]: Toolchain (without parser) took 2699.51 ms. Allocated memory was 141.0 MB in the beginning and 233.3 MB in the end (delta: 92.3 MB). Free memory was 103.3 MB in the beginning and 140.9 MB in the end (delta: -37.6 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:20,651 INFO L168 Benchmark]: CDTParser took 0.23 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. [2020-08-27 21:47:20,652 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.90 ms. Allocated memory is still 141.0 MB. Free memory was 103.1 MB in the beginning and 92.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:20,653 INFO L168 Benchmark]: Boogie Preprocessor took 132.41 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 92.0 MB in the beginning and 181.8 MB in the end (delta: -89.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:20,654 INFO L168 Benchmark]: RCFGBuilder took 465.16 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 162.2 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:20,655 INFO L168 Benchmark]: TraceAbstraction took 1726.22 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 162.2 MB in the beginning and 140.9 MB in the end (delta: 21.3 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:20,659 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 369.90 ms. Allocated memory is still 141.0 MB. Free memory was 103.1 MB in the beginning and 92.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.41 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 92.0 MB in the beginning and 181.8 MB in the end (delta: -89.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 465.16 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 162.2 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1726.22 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 162.2 MB in the beginning and 140.9 MB in the end (delta: 21.3 MB). Peak memory consumption was 50.1 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: 1.6s, 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, 0.3s 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...