/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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float-to-double2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-28 00:30:42,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-28 00:30:42,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-28 00:30:42,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-28 00:30:42,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-28 00:30:42,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-28 00:30:42,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-28 00:30:42,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-28 00:30:42,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-28 00:30:42,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-28 00:30:42,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-28 00:30:42,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-28 00:30:42,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-28 00:30:42,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-28 00:30:42,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-28 00:30:42,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-28 00:30:42,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-28 00:30:42,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-28 00:30:42,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-28 00:30:42,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-28 00:30:42,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-28 00:30:42,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-28 00:30:42,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-28 00:30:42,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-28 00:30:42,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-28 00:30:42,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-28 00:30:42,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-28 00:30:42,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-28 00:30:42,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-28 00:30:42,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-28 00:30:42,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-28 00:30:42,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-28 00:30:42,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-28 00:30:42,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-28 00:30:42,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-28 00:30:42,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-28 00:30:42,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-28 00:30:42,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-28 00:30:42,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-28 00:30:42,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-28 00:30:42,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-28 00:30:42,372 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 00:30:42,399 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-28 00:30:42,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-28 00:30:42,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-28 00:30:42,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-28 00:30:42,401 INFO L138 SettingsManager]: * Use SBE=true [2020-08-28 00:30:42,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-28 00:30:42,402 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-28 00:30:42,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-28 00:30:42,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-28 00:30:42,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-28 00:30:42,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-28 00:30:42,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-28 00:30:42,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-28 00:30:42,403 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-28 00:30:42,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-28 00:30:42,404 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-28 00:30:42,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-28 00:30:42,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-28 00:30:42,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-28 00:30:42,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-28 00:30:42,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-28 00:30:42,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-28 00:30:42,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-28 00:30:42,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-28 00:30:42,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-28 00:30:42,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-28 00:30:42,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-28 00:30:42,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-28 00:30:42,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-28 00:30:42,407 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=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-28 00:30:42,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-28 00:30:42,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-28 00:30:42,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-28 00:30:42,891 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-28 00:30:42,891 INFO L275 PluginConnector]: CDTParser initialized [2020-08-28 00:30:42,893 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float-to-double2.c [2020-08-28 00:30:42,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d51034d04/f8c46044c2f34474b3423dc73548706a/FLAG43a6bb051 [2020-08-28 00:30:43,552 INFO L306 CDTParser]: Found 1 translation units. [2020-08-28 00:30:43,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-cbmc-regression/float-to-double2.c [2020-08-28 00:30:43,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d51034d04/f8c46044c2f34474b3423dc73548706a/FLAG43a6bb051 [2020-08-28 00:30:43,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d51034d04/f8c46044c2f34474b3423dc73548706a [2020-08-28 00:30:43,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-28 00:30:43,959 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-28 00:30:43,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-28 00:30:43,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-28 00:30:43,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-28 00:30:43,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 12:30:43" (1/1) ... [2020-08-28 00:30:43,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3786b6a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:30:43, skipping insertion in model container [2020-08-28 00:30:43,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 12:30:43" (1/1) ... [2020-08-28 00:30:43,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-28 00:30:44,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-28 00:30:44,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 00:30:44,234 INFO L203 MainTranslator]: Completed pre-run [2020-08-28 00:30:44,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 00:30:44,271 INFO L208 MainTranslator]: Completed translation [2020-08-28 00:30:44,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:30:44 WrapperNode [2020-08-28 00:30:44,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-28 00:30:44,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-28 00:30:44,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-28 00:30:44,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-28 00:30:44,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:30:44" (1/1) ... [2020-08-28 00:30:44,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:30:44" (1/1) ... [2020-08-28 00:30:44,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:30:44" (1/1) ... [2020-08-28 00:30:44,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:30:44" (1/1) ... [2020-08-28 00:30:44,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:30:44" (1/1) ... [2020-08-28 00:30:44,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:30:44" (1/1) ... [2020-08-28 00:30:44,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:30:44" (1/1) ... [2020-08-28 00:30:44,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-28 00:30:44,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-28 00:30:44,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-28 00:30:44,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-28 00:30:44,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:30:44" (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 00:30:44,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-28 00:30:44,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-28 00:30:44,506 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-28 00:30:44,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-28 00:30:44,506 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-28 00:30:44,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-28 00:30:44,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-28 00:30:44,662 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-28 00:30:44,662 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-28 00:30:44,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 12:30:44 BoogieIcfgContainer [2020-08-28 00:30:44,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-28 00:30:44,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-28 00:30:44,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-28 00:30:44,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-28 00:30:44,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 12:30:43" (1/3) ... [2020-08-28 00:30:44,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b582a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 12:30:44, skipping insertion in model container [2020-08-28 00:30:44,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:30:44" (2/3) ... [2020-08-28 00:30:44,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b582a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 12:30:44, skipping insertion in model container [2020-08-28 00:30:44,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 12:30:44" (3/3) ... [2020-08-28 00:30:44,677 INFO L109 eAbstractionObserver]: Analyzing ICFG float-to-double2.c [2020-08-28 00:30:44,687 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-28 00:30:44,697 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-28 00:30:44,719 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-28 00:30:44,750 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-28 00:30:44,750 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-28 00:30:44,750 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-28 00:30:44,750 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-28 00:30:44,750 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-28 00:30:44,751 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-28 00:30:44,751 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-28 00:30:44,751 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-28 00:30:44,774 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-08-28 00:30:44,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-08-28 00:30:44,781 INFO L414 BasicCegarLoop]: Found error trace [2020-08-28 00:30:44,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-08-28 00:30:44,783 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-28 00:30:44,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-28 00:30:44,790 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2020-08-28 00:30:44,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-28 00:30:44,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331594238] [2020-08-28 00:30:44,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-28 00:30:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-28 00:30:44,888 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-28 00:30:44,889 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-28 00:30:44,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-28 00:30:44,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.08 12:30:44 BoogieIcfgContainer [2020-08-28 00:30:44,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-28 00:30:44,914 INFO L168 Benchmark]: Toolchain (without parser) took 954.01 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.1 MB in the beginning and 161.7 MB in the end (delta: -58.5 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-28 00:30:44,915 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-28 00:30:44,917 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.43 ms. Allocated memory is still 140.5 MB. Free memory was 102.9 MB in the beginning and 93.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-08-28 00:30:44,918 INFO L168 Benchmark]: Boogie Preprocessor took 113.40 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 93.0 MB in the beginning and 182.5 MB in the end (delta: -89.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-28 00:30:44,919 INFO L168 Benchmark]: RCFGBuilder took 280.50 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 172.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-28 00:30:44,920 INFO L168 Benchmark]: TraceAbstraction took 242.09 ms. Allocated memory is still 203.4 MB. Free memory was 172.0 MB in the beginning and 161.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-28 00:30:44,924 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 312.43 ms. Allocated memory is still 140.5 MB. Free memory was 102.9 MB in the beginning and 93.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.40 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 93.0 MB in the beginning and 182.5 MB in the end (delta: -89.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 280.50 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 172.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 242.09 ms. Allocated memory is still 203.4 MB. Free memory was 172.0 MB in the beginning and 161.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 9]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 9, overapproximation of someUnaryDOUBLEoperation at line 6, overapproximation of someUnaryFLOAToperation at line 5. Possible FailurePath: [L5] float f = -0x1.0p-127f; [L6] double d = -0x1.0p-127; [L7] double fp = (double)f; [L9] COND TRUE !(d == fp) [L9] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 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=13occurred 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, 7 NumberOfCodeBlocks, 7 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...