/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-benchs/float_double.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:01:07,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:01:07,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:01:07,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:01:07,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:01:07,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:01:07,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:01:07,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:01:08,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:01:08,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:01:08,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:01:08,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:01:08,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:01:08,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:01:08,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:01:08,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:01:08,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:01:08,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:01:08,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:01:08,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:01:08,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:01:08,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:01:08,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:01:08,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:01:08,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 16:01:08,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 16:01:08,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 16:01:08,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 16:01:08,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 16:01:08,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 16:01:08,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:01:08,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:01:08,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:01:08,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:01:08,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:01:08,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:01:08,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:01:08,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:01:08,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:01:08,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:01:08,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:01:08,048 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 16:01:08,074 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:01:08,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:01:08,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:01:08,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:01:08,076 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:01:08,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:01:08,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:01:08,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:01:08,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:01:08,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:01:08,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:01:08,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:01:08,078 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:01:08,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:01:08,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:01:08,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:01:08,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:01:08,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:01:08,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:01:08,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:01:08,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:01:08,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:01:08,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:01:08,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:01:08,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:01:08,081 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:01:08,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:01:08,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:01:08,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:01:08,526 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:01:08,527 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:01:08,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/float_double.c [2021-01-06 16:01:08,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e83c51ea0/64f29c3757164303804432380fa8a03a/FLAG40a976792 [2021-01-06 16:01:09,127 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:01:09,127 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-benchs/float_double.c [2021-01-06 16:01:09,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e83c51ea0/64f29c3757164303804432380fa8a03a/FLAG40a976792 [2021-01-06 16:01:09,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e83c51ea0/64f29c3757164303804432380fa8a03a [2021-01-06 16:01:09,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:01:09,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:01:09,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:01:09,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:01:09,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:01:09,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:01:09" (1/1) ... [2021-01-06 16:01:09,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc82d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:09, skipping insertion in model container [2021-01-06 16:01:09,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:01:09" (1/1) ... [2021-01-06 16:01:09,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:01:09,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 16:01:09,803 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-benchs/float_double.c[357,370] [2021-01-06 16:01:09,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:01:09,842 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 16:01:09,858 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-benchs/float_double.c[357,370] [2021-01-06 16:01:09,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:01:09,879 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:01:09,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:09 WrapperNode [2021-01-06 16:01:09,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:01:09,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:01:09,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:01:09,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:01:09,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:09" (1/1) ... [2021-01-06 16:01:09,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:09" (1/1) ... [2021-01-06 16:01:09,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:01:09,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:01:09,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:01:09,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:01:09,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:09" (1/1) ... [2021-01-06 16:01:09,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:09" (1/1) ... [2021-01-06 16:01:09,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:09" (1/1) ... [2021-01-06 16:01:09,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:09" (1/1) ... [2021-01-06 16:01:09,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:09" (1/1) ... [2021-01-06 16:01:09,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:09" (1/1) ... [2021-01-06 16:01:09,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:09" (1/1) ... [2021-01-06 16:01:09,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:01:09,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:01:09,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:01:09,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:01:09,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 16:01:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:01:10,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:01:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:01:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:01:10,300 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:01:10,301 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-01-06 16:01:10,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:01:10 BoogieIcfgContainer [2021-01-06 16:01:10,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:01:10,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:01:10,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:01:10,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:01:10,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:01:09" (1/3) ... [2021-01-06 16:01:10,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df40945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:01:10, skipping insertion in model container [2021-01-06 16:01:10,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:09" (2/3) ... [2021-01-06 16:01:10,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df40945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:01:10, skipping insertion in model container [2021-01-06 16:01:10,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:01:10" (3/3) ... [2021-01-06 16:01:10,313 INFO L111 eAbstractionObserver]: Analyzing ICFG float_double.c [2021-01-06 16:01:10,321 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:01:10,326 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:01:10,346 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:01:10,375 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:01:10,375 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:01:10,375 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:01:10,375 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:01:10,376 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:01:10,376 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:01:10,376 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:01:10,376 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:01:10,391 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2021-01-06 16:01:10,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-06 16:01:10,397 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:10,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-06 16:01:10,398 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:10,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:10,405 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-01-06 16:01:10,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:10,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188106637] [2021-01-06 16:01:10,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:01:10,541 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:01:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:01:10,562 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:01:10,584 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:01:10,585 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:01:10,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:01:10,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:01:10 BoogieIcfgContainer [2021-01-06 16:01:10,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:01:10,610 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:01:10,610 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:01:10,611 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:01:10,611 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:01:10" (3/4) ... [2021-01-06 16:01:10,616 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 16:01:10,616 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:01:10,619 INFO L168 Benchmark]: Toolchain (without parser) took 1110.45 ms. Allocated memory is still 168.8 MB. Free memory was 143.9 MB in the beginning and 109.3 MB in the end (delta: 34.6 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:10,620 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 168.8 MB. Free memory is still 141.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:01:10,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.67 ms. Allocated memory is still 168.8 MB. Free memory was 143.8 MB in the beginning and 134.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:10,622 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.26 ms. Allocated memory is still 168.8 MB. Free memory was 134.5 MB in the beginning and 133.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:10,623 INFO L168 Benchmark]: Boogie Preprocessor took 41.68 ms. Allocated memory is still 168.8 MB. Free memory was 133.4 MB in the beginning and 132.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:10,624 INFO L168 Benchmark]: RCFGBuilder took 328.56 ms. Allocated memory is still 168.8 MB. Free memory was 132.4 MB in the beginning and 121.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:10,625 INFO L168 Benchmark]: TraceAbstraction took 304.63 ms. Allocated memory is still 168.8 MB. Free memory was 121.4 MB in the beginning and 109.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:10,626 INFO L168 Benchmark]: Witness Printer took 5.79 ms. Allocated memory is still 168.8 MB. Free memory was 109.8 MB in the beginning and 109.3 MB in the end (delta: 474.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:10,632 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 168.8 MB. Free memory is still 141.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 363.67 ms. Allocated memory is still 168.8 MB. Free memory was 143.8 MB in the beginning and 134.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 47.26 ms. Allocated memory is still 168.8 MB. Free memory was 134.5 MB in the beginning and 133.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.68 ms. Allocated memory is still 168.8 MB. Free memory was 133.4 MB in the beginning and 132.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 328.56 ms. Allocated memory is still 168.8 MB. Free memory was 132.4 MB in the beginning and 121.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 304.63 ms. Allocated memory is still 168.8 MB. Free memory was 121.4 MB in the beginning and 109.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Witness Printer took 5.79 ms. Allocated memory is still 168.8 MB. Free memory was 109.8 MB in the beginning and 109.3 MB in the end (delta: 474.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L10] double x = 1e20 + 1.; [L11] float y = x; [L6] COND TRUE !(cond) [L6] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...