/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --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_1232a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:42:30,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:42:30,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:42:30,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:42:30,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:42:30,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:42:30,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:42:30,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:42:30,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:42:30,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:42:30,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:42:30,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:42:30,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:42:30,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:42:30,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:42:30,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:42:30,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:42:30,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:42:30,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:42:30,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:42:30,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:42:30,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:42:30,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:42:30,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:42:30,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:42:30,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:42:30,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:42:30,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:42:30,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:42:30,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 19:42:30,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:42:30,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:42:30,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:42:30,524 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 19:42:30,560 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:42:30,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:42:30,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:42:30,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:42:30,562 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:42:30,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:42:30,563 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:42:30,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:42:30,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:42:30,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:42:30,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:42:30,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:42:30,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:42:30,565 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:42:30,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:42:30,566 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:42:30,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:42:30,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:42:30,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:42:30,567 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:42:30,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:42:30,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:42:30,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:42:30,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:42:30,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:42:30,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:42:30,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:42:30,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:42:30,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:42:30,569 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-08-21 19:42:30,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:42:30,861 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:42:30,869 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:42:30,871 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:42:30,871 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:42:30,872 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c [2020-08-21 19:42:30,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10874748b/8b67b2f697f84c2e958a7eaa78163d6d/FLAG291a632a6 [2020-08-21 19:42:31,374 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:42:31,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c [2020-08-21 19:42:31,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10874748b/8b67b2f697f84c2e958a7eaa78163d6d/FLAG291a632a6 [2020-08-21 19:42:31,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10874748b/8b67b2f697f84c2e958a7eaa78163d6d [2020-08-21 19:42:31,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:42:31,771 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:42:31,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:42:31,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:42:31,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:42:31,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:42:31" (1/1) ... [2020-08-21 19:42:31,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e342344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:31, skipping insertion in model container [2020-08-21 19:42:31,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:42:31" (1/1) ... [2020-08-21 19:42:31,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:42:31,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:42:32,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:42:32,101 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:42:32,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:42:32,274 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:42:32,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:32 WrapperNode [2020-08-21 19:42:32,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:42:32,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:42:32,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:42:32,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:42:32,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:32" (1/1) ... [2020-08-21 19:42:32,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:32" (1/1) ... [2020-08-21 19:42:32,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:32" (1/1) ... [2020-08-21 19:42:32,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:32" (1/1) ... [2020-08-21 19:42:32,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:32" (1/1) ... [2020-08-21 19:42:32,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:32" (1/1) ... [2020-08-21 19:42:32,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:32" (1/1) ... [2020-08-21 19:42:32,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:42:32,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:42:32,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:42:32,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:42:32,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:32" (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 19:42:32,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:42:32,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:42:32,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 19:42:32,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-08-21 19:42:32,393 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2020-08-21 19:42:32,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-21 19:42:32,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:42:32,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:42:32,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-21 19:42:32,394 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 19:42:32,394 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-08-21 19:42:32,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 19:42:32,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 19:42:32,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:42:32,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:42:32,395 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2020-08-21 19:42:32,395 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-21 19:42:32,395 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:42:32,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:42:32,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:42:32,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:42:32,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 19:42:32,693 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:42:32,694 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 19:42:32,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:42:32 BoogieIcfgContainer [2020-08-21 19:42:32,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:42:32,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:42:32,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:42:32,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:42:32,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:42:31" (1/3) ... [2020-08-21 19:42:32,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c42fd40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:42:32, skipping insertion in model container [2020-08-21 19:42:32,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:42:32" (2/3) ... [2020-08-21 19:42:32,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c42fd40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:42:32, skipping insertion in model container [2020-08-21 19:42:32,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:42:32" (3/3) ... [2020-08-21 19:42:32,709 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a.c [2020-08-21 19:42:32,723 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:42:32,736 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:42:32,771 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:42:32,808 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:42:32,809 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:42:32,809 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:42:32,809 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:42:32,809 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:42:32,810 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:42:32,810 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:42:32,810 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:42:32,835 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-08-21 19:42:32,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 19:42:32,841 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:42:32,842 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] [2020-08-21 19:42:32,842 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:42:32,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:42:32,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1786760399, now seen corresponding path program 1 times [2020-08-21 19:42:32,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:42:32,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851653826] [2020-08-21 19:42:32,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:42:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:42:33,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:42:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:42:33,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:42:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:42:33,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:42:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:42:33,091 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 19:42:33,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851653826] [2020-08-21 19:42:33,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:42:33,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:42:33,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414105007] [2020-08-21 19:42:33,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:42:33,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:42:33,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:42:33,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:42:33,120 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-08-21 19:42:33,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:42:33,355 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-08-21 19:42:33,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 19:42:33,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-08-21 19:42:33,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:42:33,368 INFO L225 Difference]: With dead ends: 79 [2020-08-21 19:42:33,368 INFO L226 Difference]: Without dead ends: 40 [2020-08-21 19:42:33,372 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 [2020-08-21 19:42:33,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-21 19:42:33,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-08-21 19:42:33,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-21 19:42:33,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-08-21 19:42:33,424 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-08-21 19:42:33,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:42:33,424 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-08-21 19:42:33,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:42:33,425 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-08-21 19:42:33,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 19:42:33,427 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:42:33,427 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] [2020-08-21 19:42:33,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:42:33,428 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:42:33,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:42:33,429 INFO L82 PathProgramCache]: Analyzing trace with hash -952976765, now seen corresponding path program 1 times [2020-08-21 19:42:33,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:42:33,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524509666] [2020-08-21 19:42:33,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:42:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:42:33,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:42:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:42:33,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:42:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:42:33,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:42:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:42:33,635 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 19:42:33,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524509666] [2020-08-21 19:42:33,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:42:33,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:42:33,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252320606] [2020-08-21 19:42:33,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:42:33,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:42:33,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:42:33,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:42:33,640 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-08-21 19:42:33,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:42:33,923 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-08-21 19:42:33,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 19:42:33,924 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-08-21 19:42:33,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:42:33,927 INFO L225 Difference]: With dead ends: 59 [2020-08-21 19:42:33,928 INFO L226 Difference]: Without dead ends: 44 [2020-08-21 19:42:33,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 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 19:42:33,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-21 19:42:33,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-21 19:42:33,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-21 19:42:33,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-21 19:42:33,943 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-08-21 19:42:33,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:42:33,943 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-21 19:42:33,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:42:33,944 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-21 19:42:33,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 19:42:33,945 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:42:33,945 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] [2020-08-21 19:42:33,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:42:33,946 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:42:33,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:42:33,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1944362408, now seen corresponding path program 1 times [2020-08-21 19:42:33,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:42:33,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360497555] [2020-08-21 19:42:33,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:42:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:42:33,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:42:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:42:34,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:42:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:42:34,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:42:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:42:34,078 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 19:42:34,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360497555] [2020-08-21 19:42:34,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:42:34,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:42:34,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719951785] [2020-08-21 19:42:34,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:42:34,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:42:34,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:42:34,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:42:34,081 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-08-21 19:42:34,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:42:34,335 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-08-21 19:42:34,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 19:42:34,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-08-21 19:42:34,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:42:34,337 INFO L225 Difference]: With dead ends: 63 [2020-08-21 19:42:34,338 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 19:42:34,338 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 [2020-08-21 19:42:34,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 19:42:34,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-08-21 19:42:34,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-21 19:42:34,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-21 19:42:34,349 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-08-21 19:42:34,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:42:34,349 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-21 19:42:34,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:42:34,350 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-21 19:42:34,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 19:42:34,351 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:42:34,351 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] [2020-08-21 19:42:34,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:42:34,352 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:42:34,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:42:34,352 INFO L82 PathProgramCache]: Analyzing trace with hash 553653529, now seen corresponding path program 1 times [2020-08-21 19:42:34,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:42:34,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308491317] [2020-08-21 19:42:34,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:42:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 19:42:34,378 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 19:42:34,379 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 19:42:34,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:42:34,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:42:34 BoogieIcfgContainer [2020-08-21 19:42:34,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 19:42:34,407 INFO L168 Benchmark]: Toolchain (without parser) took 2635.28 ms. Allocated memory was 140.5 MB in the beginning and 234.9 MB in the end (delta: 94.4 MB). Free memory was 103.5 MB in the beginning and 136.8 MB in the end (delta: -33.3 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. [2020-08-21 19:42:34,408 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 19:42:34,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 503.16 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.3 MB in the beginning and 181.0 MB in the end (delta: -77.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-08-21 19:42:34,410 INFO L168 Benchmark]: Boogie Preprocessor took 58.01 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 178.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-21 19:42:34,411 INFO L168 Benchmark]: RCFGBuilder took 362.42 ms. Allocated memory is still 202.9 MB. Free memory was 178.6 MB in the beginning and 157.7 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2020-08-21 19:42:34,412 INFO L168 Benchmark]: TraceAbstraction took 1702.81 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 157.1 MB in the beginning and 136.8 MB in the end (delta: 20.3 MB). Peak memory consumption was 52.2 MB. Max. memory is 7.1 GB. [2020-08-21 19:42:34,416 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 503.16 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.3 MB in the beginning and 181.0 MB in the end (delta: -77.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.01 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 178.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 362.42 ms. Allocated memory is still 202.9 MB. Free memory was 178.6 MB in the beginning and 157.7 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1702.81 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 157.1 MB in the beginning and 136.8 MB in the end (delta: 20.3 MB). Peak memory consumption was 52.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 75. Possible FailurePath: [L74] double x = 0.0; [L75] double y = -0.0; [L76] CALL, EXPR fmin_double(x, y) [L46] CALL, EXPR __fpclassify_double(x) [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; [L46] RET, EXPR __fpclassify_double(x) [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; [L76] RET, EXPR fmin_double(x, y) [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, 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, 0.0s 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...