/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-esbmc-regression/Float_div_bad.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:02:23,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:02:23,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:02:23,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:02:23,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:02:23,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:02:23,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:02:23,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:02:23,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:02:23,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:02:23,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:02:23,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:02:23,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:02:23,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:02:23,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:02:23,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:02:23,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:02:23,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:02:23,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:02:23,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:02:23,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:02:23,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:02:23,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:02:23,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:02:23,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 16:02:23,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 16:02:23,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 16:02:23,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 16:02:23,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 16:02:23,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 16:02:23,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:02:23,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:02:23,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:02:23,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:02:23,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:02:23,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:02:23,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:02:23,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:02:23,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:02:23,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:02:23,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:02:23,459 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 16:02:23,488 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:02:23,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:02:23,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:02:23,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:02:23,490 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:02:23,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:02:23,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:02:23,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:02:23,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:02:23,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:02:23,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:02:23,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:02:23,492 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:02:23,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:02:23,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:02:23,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:02:23,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:02:23,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:02:23,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:02:23,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:02:23,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:02:23,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:02:23,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:02:23,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:02:23,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:02:23,495 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:02:23,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:02:24,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:02:24,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:02:24,053 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:02:24,054 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:02:24,055 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i [2021-01-06 16:02:24,146 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cc769293e/4a45d1a36924458694aa3a36c9d82197/FLAG60b63d76e [2021-01-06 16:02:24,795 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:02:24,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i [2021-01-06 16:02:24,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cc769293e/4a45d1a36924458694aa3a36c9d82197/FLAG60b63d76e [2021-01-06 16:02:25,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cc769293e/4a45d1a36924458694aa3a36c9d82197 [2021-01-06 16:02:25,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:02:25,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:02:25,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:02:25,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:02:25,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:02:25,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:02:25" (1/1) ... [2021-01-06 16:02:25,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ce8e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:25, skipping insertion in model container [2021-01-06 16:02:25,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:02:25" (1/1) ... [2021-01-06 16:02:25,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:02:25,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 16:02:25,362 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-esbmc-regression/Float_div_bad.i[807,820] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~x1~0,] [2021-01-06 16:02:25,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:02:25,395 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 16:02:25,410 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-esbmc-regression/Float_div_bad.i[807,820] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~x1~0,] [2021-01-06 16:02:25,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:02:25,431 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:02:25,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:25 WrapperNode [2021-01-06 16:02:25,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:02:25,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:02:25,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:02:25,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:02:25,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:25" (1/1) ... [2021-01-06 16:02:25,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:25" (1/1) ... [2021-01-06 16:02:25,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:02:25,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:02:25,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:02:25,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:02:25,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:25" (1/1) ... [2021-01-06 16:02:25,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:25" (1/1) ... [2021-01-06 16:02:25,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:25" (1/1) ... [2021-01-06 16:02:25,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:25" (1/1) ... [2021-01-06 16:02:25,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:25" (1/1) ... [2021-01-06 16:02:25,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:25" (1/1) ... [2021-01-06 16:02:25,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:25" (1/1) ... [2021-01-06 16:02:25,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:02:25,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:02:25,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:02:25,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:02:25,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:25" (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 16:02:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:02:25,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:02:25,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:02:25,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:02:25,860 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:02:25,861 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-01-06 16:02:25,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:02:25 BoogieIcfgContainer [2021-01-06 16:02:25,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:02:25,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:02:25,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:02:25,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:02:25,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:02:25" (1/3) ... [2021-01-06 16:02:25,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328c177b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:02:25, skipping insertion in model container [2021-01-06 16:02:25,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:25" (2/3) ... [2021-01-06 16:02:25,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328c177b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:02:25, skipping insertion in model container [2021-01-06 16:02:25,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:02:25" (3/3) ... [2021-01-06 16:02:25,873 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div_bad.i [2021-01-06 16:02:25,880 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:02:25,885 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:02:25,907 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:02:25,938 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:02:25,939 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:02:25,939 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:02:25,939 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:02:25,939 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:02:25,939 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:02:25,940 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:02:25,940 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:02:25,957 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2021-01-06 16:02:25,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 16:02:25,963 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:25,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 16:02:25,964 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:25,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:25,972 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-01-06 16:02:25,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:25,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116703036] [2021-01-06 16:02:25,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:02:26,103 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:02:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:02:26,121 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:02:26,145 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:02:26,146 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:02:26,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:02:26,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:02:26 BoogieIcfgContainer [2021-01-06 16:02:26,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:02:26,171 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:02:26,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:02:26,172 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:02:26,173 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:02:25" (3/4) ... [2021-01-06 16:02:26,177 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 16:02:26,177 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:02:26,180 INFO L168 Benchmark]: Toolchain (without parser) took 1023.49 ms. Allocated memory is still 159.4 MB. Free memory was 134.2 MB in the beginning and 99.3 MB in the end (delta: 34.9 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:02:26,181 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 159.4 MB. Free memory is still 132.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:02:26,182 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.85 ms. Allocated memory is still 159.4 MB. Free memory was 134.2 MB in the beginning and 124.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 16:02:26,183 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.77 ms. Allocated memory is still 159.4 MB. Free memory was 124.7 MB in the beginning and 123.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:02:26,184 INFO L168 Benchmark]: Boogie Preprocessor took 24.90 ms. Allocated memory is still 159.4 MB. Free memory was 123.3 MB in the beginning and 122.3 MB in the end (delta: 996.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:02:26,185 INFO L168 Benchmark]: RCFGBuilder took 359.67 ms. Allocated memory is still 159.4 MB. Free memory was 122.0 MB in the beginning and 111.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:02:26,187 INFO L168 Benchmark]: TraceAbstraction took 305.93 ms. Allocated memory is still 159.4 MB. Free memory was 111.1 MB in the beginning and 99.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:02:26,188 INFO L168 Benchmark]: Witness Printer took 5.98 ms. Allocated memory is still 159.4 MB. Free memory was 99.6 MB in the beginning and 99.3 MB in the end (delta: 302.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:02:26,193 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 159.4 MB. Free memory is still 132.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 274.85 ms. Allocated memory is still 159.4 MB. Free memory was 134.2 MB in the beginning and 124.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.77 ms. Allocated memory is still 159.4 MB. Free memory was 124.7 MB in the beginning and 123.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.90 ms. Allocated memory is still 159.4 MB. Free memory was 123.3 MB in the beginning and 122.3 MB in the end (delta: 996.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 359.67 ms. Allocated memory is still 159.4 MB. Free memory was 122.0 MB in the beginning and 111.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 305.93 ms. Allocated memory is still 159.4 MB. Free memory was 111.1 MB in the beginning and 99.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Witness Printer took 5.98 ms. Allocated memory is still 159.4 MB. Free memory was 99.6 MB in the beginning and 99.3 MB in the end (delta: 302.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: 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 29, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L20] float x = 1.0f; [L21] float x1 = x/1.6f; [L23] COND FALSE !(x1 != x) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 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=11occurred 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, 6 NumberOfCodeBlocks, 6 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...