/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:40:27,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:40:27,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:40:27,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:40:27,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:40:27,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:40:27,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:40:27,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:40:27,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:40:27,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:40:27,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:40:27,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:40:27,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:40:27,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:40:27,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:40:27,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:40:27,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:40:27,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:40:27,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:40:27,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:40:27,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:40:27,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:40:27,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:40:27,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:40:27,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:40:27,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:40:27,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:40:27,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:40:27,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:40:27,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:40:27,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:40:27,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:40:27,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:40:27,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:40:27,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:40:27,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:40:27,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:40:27,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:40:27,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:40:27,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:40:27,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:40:27,962 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 22:40:28,001 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:40:28,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:40:28,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:40:28,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:40:28,003 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:40:28,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:40:28,004 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:40:28,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:40:28,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:40:28,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:40:28,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:40:28,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:40:28,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:40:28,006 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:40:28,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:40:28,006 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:40:28,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:40:28,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:40:28,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:40:28,007 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:40:28,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:40:28,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:40:28,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:40:28,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:40:28,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:40:28,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:40:28,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:40:28,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:40:28,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:40:28,009 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:40:28,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:40:28,327 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:40:28,330 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:40:28,332 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:40:28,332 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:40:28,333 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-18 22:40:28,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea84bf8cf/a18a4e1ce9144c1a94a7996e63b4d087/FLAGd7f04c279 [2020-08-18 22:40:28,888 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:40:28,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-18 22:40:28,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea84bf8cf/a18a4e1ce9144c1a94a7996e63b4d087/FLAGd7f04c279 [2020-08-18 22:40:29,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea84bf8cf/a18a4e1ce9144c1a94a7996e63b4d087 [2020-08-18 22:40:29,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:40:29,282 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:40:29,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:40:29,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:40:29,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:40:29,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:40:29" (1/1) ... [2020-08-18 22:40:29,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7813d27b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:29, skipping insertion in model container [2020-08-18 22:40:29,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:40:29" (1/1) ... [2020-08-18 22:40:29,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:40:29,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:40:29,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:40:29,566 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:40:29,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:40:29,726 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:40:29,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:29 WrapperNode [2020-08-18 22:40:29,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:40:29,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:40:29,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:40:29,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:40:29,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:29" (1/1) ... [2020-08-18 22:40:29,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:29" (1/1) ... [2020-08-18 22:40:29,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:29" (1/1) ... [2020-08-18 22:40:29,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:29" (1/1) ... [2020-08-18 22:40:29,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:29" (1/1) ... [2020-08-18 22:40:29,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:29" (1/1) ... [2020-08-18 22:40:29,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:29" (1/1) ... [2020-08-18 22:40:29,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:40:29,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:40:29,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:40:29,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:40:29,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:29" (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 [2020-08-18 22:40:29,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:40:29,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:40:29,860 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-18 22:40:29,860 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-18 22:40:29,860 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:40:29,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:40:29,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-18 22:40:29,860 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-18 22:40:29,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:40:29,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 22:40:29,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:40:29,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:40:29,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 22:40:29,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:40:29,861 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-18 22:40:29,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:40:29,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:40:29,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 22:40:29,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:40:30,502 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:40:30,502 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-18 22:40:30,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:40:30 BoogieIcfgContainer [2020-08-18 22:40:30,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:40:30,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:40:30,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:40:30,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:40:30,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:40:29" (1/3) ... [2020-08-18 22:40:30,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175913a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:40:30, skipping insertion in model container [2020-08-18 22:40:30,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:29" (2/3) ... [2020-08-18 22:40:30,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175913a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:40:30, skipping insertion in model container [2020-08-18 22:40:30,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:40:30" (3/3) ... [2020-08-18 22:40:30,517 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-08-18 22:40:30,528 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:40:30,537 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:40:30,552 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:40:30,576 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:40:30,577 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:40:30,577 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:40:30,577 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:40:30,577 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:40:30,578 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:40:30,578 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:40:30,578 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:40:30,597 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-18 22:40:30,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 22:40:30,605 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:40:30,606 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] [2020-08-18 22:40:30,607 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:40:30,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:40:30,612 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-08-18 22:40:30,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:40:30,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204505498] [2020-08-18 22:40:30,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:40:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:30,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:40:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:30,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:40:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:30,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 22:40:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:40:30,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204505498] [2020-08-18 22:40:30,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:40:30,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:40:30,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243213561] [2020-08-18 22:40:30,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:40:30,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:40:30,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:40:30,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:40:30,944 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-18 22:40:31,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:40:31,291 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-18 22:40:31,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:40:31,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 22:40:31,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:40:31,304 INFO L225 Difference]: With dead ends: 138 [2020-08-18 22:40:31,304 INFO L226 Difference]: Without dead ends: 68 [2020-08-18 22:40:31,309 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 [2020-08-18 22:40:31,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-18 22:40:31,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-18 22:40:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-18 22:40:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-18 22:40:31,358 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-18 22:40:31,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:40:31,359 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-18 22:40:31,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:40:31,359 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-18 22:40:31,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 22:40:31,361 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:40:31,361 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] [2020-08-18 22:40:31,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:40:31,362 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:40:31,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:40:31,362 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-08-18 22:40:31,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:40:31,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713872044] [2020-08-18 22:40:31,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:40:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:40:31,489 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:40:31,490 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:40:31,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:40:31,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:40:31 BoogieIcfgContainer [2020-08-18 22:40:31,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:40:31,553 INFO L168 Benchmark]: Toolchain (without parser) took 2269.24 ms. Allocated memory was 140.0 MB in the beginning and 235.4 MB in the end (delta: 95.4 MB). Free memory was 102.4 MB in the beginning and 192.6 MB in the end (delta: -90.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:31,554 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 22:40:31,556 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.66 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 102.2 MB in the beginning and 176.1 MB in the end (delta: -73.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:31,557 INFO L168 Benchmark]: Boogie Preprocessor took 60.99 ms. Allocated memory is still 201.3 MB. Free memory was 176.1 MB in the beginning and 173.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:31,559 INFO L168 Benchmark]: RCFGBuilder took 718.64 ms. Allocated memory is still 201.3 MB. Free memory was 173.3 MB in the beginning and 137.9 MB in the end (delta: 35.4 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:31,561 INFO L168 Benchmark]: TraceAbstraction took 1039.57 ms. Allocated memory was 201.3 MB in the beginning and 235.4 MB in the end (delta: 34.1 MB). Free memory was 137.3 MB in the beginning and 192.6 MB in the end (delta: -55.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 22:40:31,574 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 444.66 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 102.2 MB in the beginning and 176.1 MB in the end (delta: -73.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.99 ms. Allocated memory is still 201.3 MB. Free memory was 176.1 MB in the beginning and 173.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 718.64 ms. Allocated memory is still 201.3 MB. Free memory was 173.3 MB in the beginning and 137.9 MB in the end (delta: 35.4 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1039.57 ms. Allocated memory was 201.3 MB in the beginning and 235.4 MB in the end (delta: 34.1 MB). Free memory was 137.3 MB in the beginning and 192.6 MB in the end (delta: -55.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) [L161] __int32_t hx; [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L180] RET isfinite_double(x) [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); [L182] RET, EXPR fmod_double(x, y) [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x [L186] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...