/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/floats-cbmc-regression/float-no-simp6.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:05:51,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:05:51,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:05:51,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:05:51,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:05:51,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:05:51,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:05:51,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:05:51,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:05:51,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:05:51,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:05:51,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:05:51,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:05:51,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:05:51,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:05:51,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:05:51,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:05:51,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:05:51,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:05:51,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:05:51,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:05:51,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:05:51,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:05:51,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:05:51,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 06:05:51,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 06:05:51,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 06:05:51,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 06:05:51,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 06:05:51,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 06:05:51,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 06:05:51,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 06:05:51,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 06:05:51,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 06:05:51,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 06:05:51,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 06:05:51,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 06:05:51,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 06:05:51,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:05:51,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:05:51,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:05:51,374 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 06:05:51,425 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:05:51,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:05:51,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:05:51,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:05:51,431 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:05:51,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:05:51,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:05:51,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:05:51,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:05:51,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:05:51,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:05:51,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:05:51,434 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:05:51,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:05:51,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:05:51,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:05:51,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:05:51,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:05:51,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:05:51,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:05:51,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:05:51,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:05:51,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:05:51,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:05:51,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:05:51,437 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:05:51,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:05:51,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:05:51,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:05:51,848 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:05:51,850 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:05:51,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-12-23 06:05:51,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3b69ceae1/4dcf9ce425bc4621af5b8ab9a6d25813/FLAG5e0fd2cf2 [2020-12-23 06:05:52,590 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:05:52,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-12-23 06:05:52,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3b69ceae1/4dcf9ce425bc4621af5b8ab9a6d25813/FLAG5e0fd2cf2 [2020-12-23 06:05:52,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3b69ceae1/4dcf9ce425bc4621af5b8ab9a6d25813 [2020-12-23 06:05:52,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:05:52,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:05:52,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:05:52,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:05:52,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:05:52,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:05:52" (1/1) ... [2020-12-23 06:05:52,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a957744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:52, skipping insertion in model container [2020-12-23 06:05:52,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:05:52" (1/1) ... [2020-12-23 06:05:52,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:05:52,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 06:05:53,135 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/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2020-12-23 06:05:53,146 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/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2020-12-23 06:05:53,151 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/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2020-12-23 06:05:53,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:05:53,164 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 06:05:53,181 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/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2020-12-23 06:05:53,184 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/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2020-12-23 06:05:53,187 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/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2020-12-23 06:05:53,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:05:53,204 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:05:53,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:53 WrapperNode [2020-12-23 06:05:53,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:05:53,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:05:53,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:05:53,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:05:53,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:53" (1/1) ... [2020-12-23 06:05:53,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:53" (1/1) ... [2020-12-23 06:05:53,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:05:53,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:05:53,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:05:53,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:05:53,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:53" (1/1) ... [2020-12-23 06:05:53,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:53" (1/1) ... [2020-12-23 06:05:53,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:53" (1/1) ... [2020-12-23 06:05:53,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:53" (1/1) ... [2020-12-23 06:05:53,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:53" (1/1) ... [2020-12-23 06:05:53,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:53" (1/1) ... [2020-12-23 06:05:53,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:53" (1/1) ... [2020-12-23 06:05:53,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:05:53,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:05:53,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:05:53,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:05:53,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:53" (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 [2020-12-23 06:05:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:05:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:05:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:05:53,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:05:53,590 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:05:53,590 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-23 06:05:53,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:05:53 BoogieIcfgContainer [2020-12-23 06:05:53,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:05:53,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:05:53,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:05:53,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:05:53,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:05:52" (1/3) ... [2020-12-23 06:05:53,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f05d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:05:53, skipping insertion in model container [2020-12-23 06:05:53,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:05:53" (2/3) ... [2020-12-23 06:05:53,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f05d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:05:53, skipping insertion in model container [2020-12-23 06:05:53,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:05:53" (3/3) ... [2020-12-23 06:05:53,661 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2020-12-23 06:05:53,698 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:05:53,709 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-23 06:05:53,743 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-23 06:05:53,773 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:05:53,773 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:05:53,773 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:05:53,773 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:05:53,773 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:05:53,774 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:05:53,774 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:05:53,774 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:05:53,791 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-23 06:05:53,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-23 06:05:53,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:05:53,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-23 06:05:53,799 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:05:53,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:05:53,806 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-12-23 06:05:53,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:05:53,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258265999] [2020-12-23 06:05:53,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:05:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:05:53,939 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:05:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:05:53,959 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:05:53,983 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 06:05:53,984 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 06:05:53,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:05:54,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:05:54 BoogieIcfgContainer [2020-12-23 06:05:54,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:05:54,015 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:05:54,015 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:05:54,015 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:05:54,016 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:05:53" (3/4) ... [2020-12-23 06:05:54,025 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 06:05:54,025 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:05:54,028 INFO L168 Benchmark]: Toolchain (without parser) took 1088.80 ms. Allocated memory is still 161.5 MB. Free memory was 136.9 MB in the beginning and 132.4 MB in the end (delta: 4.4 MB). Peak memory consumption was 3.9 MB. Max. memory is 8.0 GB. [2020-12-23 06:05:54,029 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 161.5 MB. Free memory is still 134.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:05:54,030 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.36 ms. Allocated memory is still 161.5 MB. Free memory was 136.6 MB in the beginning and 125.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:05:54,031 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.48 ms. Allocated memory is still 161.5 MB. Free memory was 125.1 MB in the beginning and 123.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:05:54,032 INFO L168 Benchmark]: Boogie Preprocessor took 21.60 ms. Allocated memory is still 161.5 MB. Free memory was 123.7 MB in the beginning and 122.8 MB in the end (delta: 911.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:05:54,033 INFO L168 Benchmark]: RCFGBuilder took 324.43 ms. Allocated memory is still 161.5 MB. Free memory was 122.6 MB in the beginning and 111.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:05:54,034 INFO L168 Benchmark]: TraceAbstraction took 383.78 ms. Allocated memory is still 161.5 MB. Free memory was 144.3 MB in the beginning and 132.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:05:54,035 INFO L168 Benchmark]: Witness Printer took 10.86 ms. Allocated memory is still 161.5 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:05:54,039 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 161.5 MB. Free memory is still 134.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 264.36 ms. Allocated memory is still 161.5 MB. Free memory was 136.6 MB in the beginning and 125.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.48 ms. Allocated memory is still 161.5 MB. Free memory was 125.1 MB in the beginning and 123.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 21.60 ms. Allocated memory is still 161.5 MB. Free memory was 123.7 MB in the beginning and 122.8 MB in the end (delta: 911.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 324.43 ms. Allocated memory is still 161.5 MB. Free memory was 122.6 MB in the beginning and 111.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 383.78 ms. Allocated memory is still 161.5 MB. Free memory was 144.3 MB in the beginning and 132.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Witness Printer took 10.86 ms. Allocated memory is still 161.5 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 25]: 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 25, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L20] float f1=0x1.000000p-1f; [L21] float f2=0x1.fffffep-126f; [L23] float res = f1 * f2; [L25] COND TRUE !(res == 0x1.0p-126f) [L25] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 3 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=16occurred 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...