/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/addsub_float_exact.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:00:42,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:00:42,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:00:42,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:00:42,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:00:42,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:00:42,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:00:42,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:00:42,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:00:42,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:00:42,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:00:42,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:00:42,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:00:42,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:00:42,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:00:42,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:00:42,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:00:42,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:00:42,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:00:42,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:00:42,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:00:42,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:00:42,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:00:42,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:00:42,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 16:00:42,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 16:00:42,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 16:00:42,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 16:00:42,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 16:00:42,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 16:00:42,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:00:42,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:00:42,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:00:42,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:00:42,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:00:42,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:00:42,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:00:42,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:00:42,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:00:42,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:00:42,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:00:42,847 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 16:00:42,900 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:00:42,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:00:42,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:00:42,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:00:42,906 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:00:42,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:00:42,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:00:42,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:00:42,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:00:42,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:00:42,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:00:42,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:00:42,909 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:00:42,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:00:42,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:00:42,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:00:42,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:00:42,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:00:42,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:00:42,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:00:42,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:00:42,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:00:42,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:00:42,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:00:42,913 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:00:42,913 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:00:43,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:00:43,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:00:43,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:00:43,428 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:00:43,429 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:00:43,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/addsub_float_exact.c [2021-01-06 16:00:43,529 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/06f9a2848/96185ca2c32f4fa2802f4d944589753c/FLAGdb81c9547 [2021-01-06 16:00:44,126 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:00:44,127 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-benchs/addsub_float_exact.c [2021-01-06 16:00:44,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/06f9a2848/96185ca2c32f4fa2802f4d944589753c/FLAGdb81c9547 [2021-01-06 16:00:44,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/06f9a2848/96185ca2c32f4fa2802f4d944589753c [2021-01-06 16:00:44,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:00:44,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:00:44,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:00:44,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:00:44,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:00:44,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:00:44" (1/1) ... [2021-01-06 16:00:44,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac05147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:44, skipping insertion in model container [2021-01-06 16:00:44,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:00:44" (1/1) ... [2021-01-06 16:00:44,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:00:44,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 16:00:44,732 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/addsub_float_exact.c[392,405] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2021-01-06 16:00:44,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:00:44,762 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 16:00:44,778 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/addsub_float_exact.c[392,405] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2021-01-06 16:00:44,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:00:44,799 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:00:44,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:44 WrapperNode [2021-01-06 16:00:44,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:00:44,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:00:44,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:00:44,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:00:44,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:44" (1/1) ... [2021-01-06 16:00:44,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:44" (1/1) ... [2021-01-06 16:00:44,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:00:44,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:00:44,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:00:44,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:00:44,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:44" (1/1) ... [2021-01-06 16:00:44,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:44" (1/1) ... [2021-01-06 16:00:44,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:44" (1/1) ... [2021-01-06 16:00:44,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:44" (1/1) ... [2021-01-06 16:00:44,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:44" (1/1) ... [2021-01-06 16:00:44,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:44" (1/1) ... [2021-01-06 16:00:44,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:44" (1/1) ... [2021-01-06 16:00:44,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:00:44,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:00:44,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:00:44,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:00:44,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:44" (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 16:00:44,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:00:44,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:00:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:00:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:00:45,217 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:00:45,217 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-01-06 16:00:45,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:00:45 BoogieIcfgContainer [2021-01-06 16:00:45,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:00:45,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:00:45,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:00:45,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:00:45,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:00:44" (1/3) ... [2021-01-06 16:00:45,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78dcfe9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:00:45, skipping insertion in model container [2021-01-06 16:00:45,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:00:44" (2/3) ... [2021-01-06 16:00:45,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78dcfe9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:00:45, skipping insertion in model container [2021-01-06 16:00:45,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:00:45" (3/3) ... [2021-01-06 16:00:45,230 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_float_exact.c [2021-01-06 16:00:45,238 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:00:45,244 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:00:45,275 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:00:45,361 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:00:45,362 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:00:45,365 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:00:45,366 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:00:45,366 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:00:45,366 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:00:45,366 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:00:45,366 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:00:45,410 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2021-01-06 16:00:45,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-06 16:00:45,427 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:00:45,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-06 16:00:45,429 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:00:45,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:00:45,438 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-01-06 16:00:45,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:00:45,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522785605] [2021-01-06 16:00:45,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:00:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:00:45,586 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:00:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:00:45,607 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:00:45,630 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:00:45,631 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:00:45,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:00:45,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:00:45 BoogieIcfgContainer [2021-01-06 16:00:45,655 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:00:45,656 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:00:45,656 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:00:45,656 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:00:45,657 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:00:45" (3/4) ... [2021-01-06 16:00:45,660 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 16:00:45,661 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:00:45,664 INFO L168 Benchmark]: Toolchain (without parser) took 1132.35 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 124.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:00:45,664 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:00:45,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.79 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:00:45,667 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.93 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:00:45,668 INFO L168 Benchmark]: Boogie Preprocessor took 22.48 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 114.3 MB in the end (delta: 883.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:00:45,669 INFO L168 Benchmark]: RCFGBuilder took 355.40 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 103.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:00:45,670 INFO L168 Benchmark]: TraceAbstraction took 433.69 ms. Allocated memory is still 151.0 MB. Free memory was 103.5 MB in the beginning and 124.8 MB in the end (delta: -21.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:00:45,671 INFO L168 Benchmark]: Witness Printer took 4.96 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.3 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:00:45,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 264.79 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.93 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.48 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 114.3 MB in the end (delta: 883.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 355.40 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 103.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 433.69 ms. Allocated memory is still 151.0 MB. Free memory was 103.5 MB in the beginning and 124.8 MB in the end (delta: -21.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 4.96 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.3 MB in the end (delta: 522.2 kB). There was no memory consumed. 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 someBinaryFLOATComparisonOperation at line 16, overapproximation of someBinaryArithmeticFLOAToperation at line 13. Possible FailurePath: [L10] float x, y, z, r; [L12] x = 1e7f [L13] y = x + 1.f [L14] z = x - 1.f [L15] r = y - z [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...