/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/zonotope_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:42:27,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:42:27,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:42:27,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:42:27,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:42:27,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:42:27,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:42:27,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:42:27,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:42:27,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:42:27,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:42:27,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:42:27,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:42:27,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:42:27,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:42:27,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:42:27,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:42:27,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:42:27,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:42:27,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:42:27,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:42:27,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:42:27,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:42:27,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:42:27,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 03:42:27,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 03:42:27,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 03:42:27,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 03:42:27,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 03:42:27,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 03:42:27,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 03:42:27,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 03:42:27,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 03:42:27,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 03:42:27,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 03:42:27,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 03:42:27,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 03:42:27,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 03:42:27,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:42:27,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:42:27,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:42:27,471 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:42:27,516 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:42:27,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:42:27,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:42:27,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:42:27,522 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:42:27,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:42:27,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:42:27,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:42:27,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:42:27,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:42:27,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:42:27,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:42:27,525 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:42:27,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:42:27,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:42:27,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:42:27,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:42:27,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:42:27,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:42:27,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:42:27,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:42:27,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:42:27,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:42:27,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:42:27,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:42:27,528 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:42:27,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:42:27,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:42:27,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:42:27,943 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:42:27,944 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:42:27,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_2.c [2020-12-22 03:42:28,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b753ea1f/f6d588ea0280457f920c53df070ccfec/FLAGac67be091 [2020-12-22 03:42:28,695 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:42:28,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_2.c [2020-12-22 03:42:28,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b753ea1f/f6d588ea0280457f920c53df070ccfec/FLAGac67be091 [2020-12-22 03:42:29,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b753ea1f/f6d588ea0280457f920c53df070ccfec [2020-12-22 03:42:29,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:42:29,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:42:29,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:42:29,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:42:29,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:42:29,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:42:29" (1/1) ... [2020-12-22 03:42:29,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e44da46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:29, skipping insertion in model container [2020-12-22 03:42:29,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:42:29" (1/1) ... [2020-12-22 03:42:29,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:42:29,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:42:29,310 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_2.c[473,486] [2020-12-22 03:42:29,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:42:29,342 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:42:29,357 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_2.c[473,486] [2020-12-22 03:42:29,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:42:29,381 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:42:29,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:29 WrapperNode [2020-12-22 03:42:29,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:42:29,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:42:29,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:42:29,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:42:29,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:29" (1/1) ... [2020-12-22 03:42:29,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:29" (1/1) ... [2020-12-22 03:42:29,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:42:29,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:42:29,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:42:29,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:42:29,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:29" (1/1) ... [2020-12-22 03:42:29,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:29" (1/1) ... [2020-12-22 03:42:29,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:29" (1/1) ... [2020-12-22 03:42:29,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:29" (1/1) ... [2020-12-22 03:42:29,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:29" (1/1) ... [2020-12-22 03:42:29,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:29" (1/1) ... [2020-12-22 03:42:29,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:29" (1/1) ... [2020-12-22 03:42:29,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:42:29,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:42:29,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:42:29,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:42:29,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 03:42:29,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:42:29,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:42:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:42:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:42:29,862 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:42:29,863 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-22 03:42:29,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:42:29 BoogieIcfgContainer [2020-12-22 03:42:29,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:42:29,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:42:29,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:42:29,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:42:29,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:42:29" (1/3) ... [2020-12-22 03:42:29,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475f0b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:42:29, skipping insertion in model container [2020-12-22 03:42:29,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:42:29" (2/3) ... [2020-12-22 03:42:29,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475f0b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:42:29, skipping insertion in model container [2020-12-22 03:42:29,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:42:29" (3/3) ... [2020-12-22 03:42:29,877 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_2.c [2020-12-22 03:42:29,886 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:42:29,892 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 03:42:29,923 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 03:42:29,989 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:42:29,989 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:42:29,989 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:42:29,989 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:42:29,990 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:42:29,990 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:42:29,993 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:42:29,993 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:42:30,021 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-12-22 03:42:30,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-22 03:42:30,028 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:42:30,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-22 03:42:30,029 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:42:30,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:42:30,039 INFO L82 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2020-12-22 03:42:30,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:42:30,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117935046] [2020-12-22 03:42:30,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:42:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:42:30,229 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:42:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:42:30,289 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:42:30,323 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:42:30,324 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:42:30,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:42:30,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:42:30 BoogieIcfgContainer [2020-12-22 03:42:30,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:42:30,368 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:42:30,369 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:42:30,369 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:42:30,370 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:42:29" (3/4) ... [2020-12-22 03:42:30,378 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:42:30,378 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:42:30,381 INFO L168 Benchmark]: Toolchain (without parser) took 1311.87 ms. Allocated memory is still 170.9 MB. Free memory was 128.2 MB in the beginning and 129.8 MB in the end (delta: -1.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:42:30,382 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 170.9 MB. Free memory is still 144.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:42:30,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.96 ms. Allocated memory is still 170.9 MB. Free memory was 127.9 MB in the beginning and 145.9 MB in the end (delta: -18.0 MB). Peak memory consumption was 5.7 MB. Max. memory is 8.0 GB. [2020-12-22 03:42:30,384 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.15 ms. Allocated memory is still 170.9 MB. Free memory was 145.9 MB in the beginning and 144.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:42:30,385 INFO L168 Benchmark]: Boogie Preprocessor took 25.31 ms. Allocated memory is still 170.9 MB. Free memory was 144.3 MB in the beginning and 143.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:42:30,386 INFO L168 Benchmark]: RCFGBuilder took 415.76 ms. Allocated memory is still 170.9 MB. Free memory was 143.3 MB in the beginning and 142.6 MB in the end (delta: 681.4 kB). Peak memory consumption was 1.2 MB. Max. memory is 8.0 GB. [2020-12-22 03:42:30,387 INFO L168 Benchmark]: TraceAbstraction took 496.68 ms. Allocated memory is still 170.9 MB. Free memory was 142.4 MB in the beginning and 130.0 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:42:30,388 INFO L168 Benchmark]: Witness Printer took 9.52 ms. Allocated memory is still 170.9 MB. Free memory was 130.0 MB in the beginning and 129.8 MB in the end (delta: 263.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:42:30,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 170.9 MB. Free memory is still 144.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 309.96 ms. Allocated memory is still 170.9 MB. Free memory was 127.9 MB in the beginning and 145.9 MB in the end (delta: -18.0 MB). Peak memory consumption was 5.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.15 ms. Allocated memory is still 170.9 MB. Free memory was 145.9 MB in the beginning and 144.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.31 ms. Allocated memory is still 170.9 MB. Free memory was 144.3 MB in the beginning and 143.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 415.76 ms. Allocated memory is still 170.9 MB. Free memory was 143.3 MB in the beginning and 142.6 MB in the end (delta: 681.4 kB). Peak memory consumption was 1.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 496.68 ms. Allocated memory is still 170.9 MB. Free memory was 142.4 MB in the beginning and 130.0 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Witness Printer took 9.52 ms. Allocated memory is still 170.9 MB. Free memory was 130.0 MB in the beginning and 129.8 MB in the end (delta: 263.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: 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 22. Possible FailurePath: [L14] float x = 12.f; [L15] float x1 = 12.f; [L16] float y = 16.f; [L17] float y1 = 16.f; [L18] int i; [L19] i = 0 [L19] COND TRUE i < 100000 [L20] x = x1 [L21] y = y1 [L22] x1 = 3.f * x / 4.f + y / 4.f [L23] y1 = x / 4.f + 3.f * y / 4.f [L10] COND TRUE !(cond) [L10] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, 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=19occurred 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, 5 NumberOfCodeBlocks, 5 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...