/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/nan_float.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-28 04:51:53,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-28 04:51:53,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-28 04:51:53,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-28 04:51:53,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-28 04:51:53,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-28 04:51:53,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-28 04:51:53,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-28 04:51:53,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-28 04:51:53,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-28 04:51:53,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-28 04:51:53,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-28 04:51:53,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-28 04:51:53,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-28 04:51:53,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-28 04:51:53,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-28 04:51:53,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-28 04:51:53,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-28 04:51:53,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-28 04:51:53,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-28 04:51:53,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-28 04:51:53,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-28 04:51:53,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-28 04:51:53,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-28 04:51:53,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-28 04:51:53,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-28 04:51:53,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-28 04:51:53,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-28 04:51:53,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-28 04:51:53,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-28 04:51:53,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-28 04:51:53,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-28 04:51:53,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-28 04:51:53,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-28 04:51:53,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-28 04:51:53,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-28 04:51:53,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-28 04:51:53,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-28 04:51:53,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-28 04:51:53,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-28 04:51:53,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-28 04:51:53,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-28 04:51:53,364 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-28 04:51:53,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-28 04:51:53,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-28 04:51:53,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-28 04:51:53,366 INFO L138 SettingsManager]: * Use SBE=true [2020-08-28 04:51:53,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-28 04:51:53,366 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-28 04:51:53,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-28 04:51:53,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-28 04:51:53,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-28 04:51:53,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-28 04:51:53,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-28 04:51:53,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-28 04:51:53,368 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-28 04:51:53,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-28 04:51:53,368 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-28 04:51:53,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-28 04:51:53,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-28 04:51:53,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-28 04:51:53,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-28 04:51:53,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-28 04:51:53,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-28 04:51:53,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-28 04:51:53,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-28 04:51:53,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-28 04:51:53,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-28 04:51:53,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-28 04:51:53,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-28 04:51:53,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-28 04:51:53,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-28 04:51:53,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-28 04:51:53,872 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-28 04:51:53,876 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-28 04:51:53,877 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-28 04:51:53,877 INFO L275 PluginConnector]: CDTParser initialized [2020-08-28 04:51:53,879 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/nan_float.c [2020-08-28 04:51:53,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de10123b7/21eb5f1ac5cd4f849ecad86c9f76b709/FLAG46e88ef9c [2020-08-28 04:51:54,531 INFO L306 CDTParser]: Found 1 translation units. [2020-08-28 04:51:54,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/nan_float.c [2020-08-28 04:51:54,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de10123b7/21eb5f1ac5cd4f849ecad86c9f76b709/FLAG46e88ef9c [2020-08-28 04:51:54,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de10123b7/21eb5f1ac5cd4f849ecad86c9f76b709 [2020-08-28 04:51:54,882 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-28 04:51:54,885 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-28 04:51:54,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-28 04:51:54,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-28 04:51:54,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-28 04:51:54,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 04:51:54" (1/1) ... [2020-08-28 04:51:54,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d6bd24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:54, skipping insertion in model container [2020-08-28 04:51:54,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 04:51:54" (1/1) ... [2020-08-28 04:51:54,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-28 04:51:54,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-28 04:51:55,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 04:51:55,151 INFO L203 MainTranslator]: Completed pre-run [2020-08-28 04:51:55,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 04:51:55,189 INFO L208 MainTranslator]: Completed translation [2020-08-28 04:51:55,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:55 WrapperNode [2020-08-28 04:51:55,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-28 04:51:55,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-28 04:51:55,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-28 04:51:55,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-28 04:51:55,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:55" (1/1) ... [2020-08-28 04:51:55,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:55" (1/1) ... [2020-08-28 04:51:55,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:55" (1/1) ... [2020-08-28 04:51:55,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:55" (1/1) ... [2020-08-28 04:51:55,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:55" (1/1) ... [2020-08-28 04:51:55,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:55" (1/1) ... [2020-08-28 04:51:55,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:55" (1/1) ... [2020-08-28 04:51:55,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-28 04:51:55,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-28 04:51:55,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-28 04:51:55,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-28 04:51:55,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-28 04:51:55,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-28 04:51:55,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-28 04:51:55,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-28 04:51:55,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-28 04:51:55,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-28 04:51:55,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-28 04:51:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-28 04:51:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-28 04:51:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-28 04:51:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-28 04:51:55,575 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-28 04:51:55,575 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-28 04:51:55,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 04:51:55 BoogieIcfgContainer [2020-08-28 04:51:55,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-28 04:51:55,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-28 04:51:55,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-28 04:51:55,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-28 04:51:55,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 04:51:54" (1/3) ... [2020-08-28 04:51:55,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49912ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 04:51:55, skipping insertion in model container [2020-08-28 04:51:55,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 04:51:55" (2/3) ... [2020-08-28 04:51:55,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49912ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 04:51:55, skipping insertion in model container [2020-08-28 04:51:55,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 04:51:55" (3/3) ... [2020-08-28 04:51:55,589 INFO L109 eAbstractionObserver]: Analyzing ICFG nan_float.c [2020-08-28 04:51:55,599 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-28 04:51:55,609 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-28 04:51:55,629 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-28 04:51:55,661 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-28 04:51:55,661 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-28 04:51:55,661 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-28 04:51:55,662 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-28 04:51:55,662 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-28 04:51:55,662 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-28 04:51:55,662 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-28 04:51:55,662 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-28 04:51:55,683 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-08-28 04:51:55,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-08-28 04:51:55,689 INFO L414 BasicCegarLoop]: Found error trace [2020-08-28 04:51:55,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-28 04:51:55,690 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-28 04:51:55,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-28 04:51:55,697 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2020-08-28 04:51:55,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-28 04:51:55,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199204423] [2020-08-28 04:51:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-28 04:51:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-28 04:51:55,822 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-28 04:51:55,823 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-28 04:51:55,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-28 04:51:55,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.08 04:51:55 BoogieIcfgContainer [2020-08-28 04:51:55,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-28 04:51:55,852 INFO L168 Benchmark]: Toolchain (without parser) took 965.86 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 102.9 MB in the beginning and 159.1 MB in the end (delta: -56.2 MB). Peak memory consumption was 6.7 MB. Max. memory is 7.1 GB. [2020-08-28 04:51:55,854 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-28 04:51:55,855 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.56 ms. Allocated memory is still 138.9 MB. Free memory was 102.5 MB in the beginning and 93.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-08-28 04:51:55,856 INFO L168 Benchmark]: Boogie Preprocessor took 34.80 ms. Allocated memory is still 138.9 MB. Free memory was 93.5 MB in the beginning and 91.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-08-28 04:51:55,858 INFO L168 Benchmark]: RCFGBuilder took 353.39 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.8 MB in the beginning and 170.2 MB in the end (delta: -78.5 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-08-28 04:51:55,859 INFO L168 Benchmark]: TraceAbstraction took 267.42 ms. Allocated memory is still 201.9 MB. Free memory was 169.2 MB in the beginning and 159.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-28 04:51:55,863 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 302.56 ms. Allocated memory is still 138.9 MB. Free memory was 102.5 MB in the beginning and 93.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.80 ms. Allocated memory is still 138.9 MB. Free memory was 93.5 MB in the beginning and 91.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 353.39 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.8 MB in the beginning and 170.2 MB in the end (delta: -78.5 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 267.42 ms. Allocated memory is still 201.9 MB. Free memory was 169.2 MB in the beginning and 159.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13. Possible FailurePath: [L10] float x; [L11] x = __VERIFIER_nondet_float() [L13] CALL __VERIFIER_assert(x==x) [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, 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=17occurred 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, 9 NumberOfCodeBlocks, 9 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...