/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/cast_union_tight.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:14:52,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:14:52,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:14:52,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:14:52,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:14:52,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:14:52,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:14:52,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:14:52,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:14:52,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:14:52,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:14:52,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:14:52,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:14:52,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:14:52,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:14:52,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:14:52,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:14:52,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:14:52,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:14:52,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:14:52,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:14:52,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:14:52,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:14:52,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:14:52,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:14:52,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:14:52,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:14:52,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:14:52,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:14:52,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:14:52,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:14:52,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:14:52,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:14:52,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:14:52,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:14:52,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:14:52,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:14:52,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:14:52,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:14:52,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:14:52,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:14:52,562 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 [2020-08-18 20:14:52,603 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:14:52,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:14:52,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:14:52,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:14:52,606 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:14:52,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:14:52,606 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:14:52,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:14:52,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:14:52,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:14:52,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:14:52,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:14:52,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:14:52,608 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:14:52,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:14:52,609 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:14:52,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:14:52,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:14:52,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:14:52,610 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:14:52,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:14:52,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:14:52,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:14:52,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:14:52,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:14:52,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:14:52,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:14:52,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:14:52,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:14:52,612 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=5;interpolation-heuristic=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:14:52,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:14:52,952 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:14:52,957 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:14:52,958 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:14:52,959 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:14:52,960 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/cast_union_tight.c [2020-08-18 20:14:53,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f58a07c82/4357671755914382a4c1aa477b6b75bf/FLAGd1a7c528b [2020-08-18 20:14:53,507 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:14:53,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/cast_union_tight.c [2020-08-18 20:14:53,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f58a07c82/4357671755914382a4c1aa477b6b75bf/FLAGd1a7c528b [2020-08-18 20:14:53,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f58a07c82/4357671755914382a4c1aa477b6b75bf [2020-08-18 20:14:53,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:14:53,936 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:14:53,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:14:53,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:14:53,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:14:53,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:14:53" (1/1) ... [2020-08-18 20:14:53,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb2e3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:53, skipping insertion in model container [2020-08-18 20:14:53,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:14:53" (1/1) ... [2020-08-18 20:14:53,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:14:53,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:14:54,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:14:54,238 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:14:54,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:14:54,352 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:14:54,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54 WrapperNode [2020-08-18 20:14:54,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:14:54,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:14:54,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:14:54,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:14:54,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54" (1/1) ... [2020-08-18 20:14:54,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54" (1/1) ... [2020-08-18 20:14:54,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54" (1/1) ... [2020-08-18 20:14:54,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54" (1/1) ... [2020-08-18 20:14:54,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54" (1/1) ... [2020-08-18 20:14:54,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54" (1/1) ... [2020-08-18 20:14:54,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54" (1/1) ... [2020-08-18 20:14:54,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:14:54,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:14:54,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:14:54,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:14:54,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54" (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 [2020-08-18 20:14:54,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:14:54,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:14:54,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 20:14:54,461 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2020-08-18 20:14:54,462 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:14:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:14:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:14:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 20:14:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2020-08-18 20:14:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:14:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:14:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:14:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 20:14:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:14:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:14:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:14:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:14:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 20:14:54,759 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:14:54,760 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 20:14:54,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:14:54 BoogieIcfgContainer [2020-08-18 20:14:54,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:14:54,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:14:54,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:14:54,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:14:54,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:14:53" (1/3) ... [2020-08-18 20:14:54,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59cdf825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:14:54, skipping insertion in model container [2020-08-18 20:14:54,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:14:54" (2/3) ... [2020-08-18 20:14:54,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59cdf825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:14:54, skipping insertion in model container [2020-08-18 20:14:54,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:14:54" (3/3) ... [2020-08-18 20:14:54,785 INFO L109 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2020-08-18 20:14:54,798 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:14:54,805 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:14:54,820 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:14:54,847 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:14:54,848 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:14:54,848 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:14:54,848 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:14:54,848 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:14:54,848 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:14:54,848 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:14:54,849 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:14:54,864 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-08-18 20:14:54,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-18 20:14:54,870 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:14:54,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:14:54,872 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:14:54,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:14:54,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1809195508, now seen corresponding path program 1 times [2020-08-18 20:14:54,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:14:54,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664611710] [2020-08-18 20:14:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:14:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:14:55,046 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:14:55,047 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:14:55,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:14:55,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:14:55 BoogieIcfgContainer [2020-08-18 20:14:55,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:14:55,074 INFO L168 Benchmark]: Toolchain (without parser) took 1137.31 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 102.2 MB in the beginning and 148.6 MB in the end (delta: -46.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2020-08-18 20:14:55,075 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 20:14:55,076 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.21 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 102.0 MB in the beginning and 179.7 MB in the end (delta: -77.7 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-08-18 20:14:55,077 INFO L168 Benchmark]: Boogie Preprocessor took 38.14 ms. Allocated memory is still 200.8 MB. Free memory was 179.7 MB in the beginning and 177.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-18 20:14:55,078 INFO L168 Benchmark]: RCFGBuilder took 372.49 ms. Allocated memory is still 200.8 MB. Free memory was 177.3 MB in the beginning and 162.0 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-08-18 20:14:55,079 INFO L168 Benchmark]: TraceAbstraction took 297.60 ms. Allocated memory is still 200.8 MB. Free memory was 161.4 MB in the beginning and 148.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-18 20:14:55,083 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 416.21 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 102.0 MB in the beginning and 179.7 MB in the end (delta: -77.7 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.14 ms. Allocated memory is still 200.8 MB. Free memory was 179.7 MB in the beginning and 177.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 372.49 ms. Allocated memory is still 200.8 MB. Free memory was 177.3 MB in the beginning and 162.0 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 297.60 ms. Allocated memory is still 200.8 MB. Free memory was 161.4 MB in the beginning and 148.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 21, overapproximation of bitwiseXor at line 20. Possible FailurePath: [L26] int a; [L27] double r; [L29] a = __VERIFIER_nondet_int() [L31] CALL, EXPR cast(a) [L16] union u x, y; [L17] x.i[0] = 0x43300000 [L18] EXPR x.i[0] [L18] y.i[0] = x.i[0] [L19] x.i[1] = 0x80000000 [L20] EXPR x.i[1] [L20] y.i[1] = i ^ x.i[1] [L21] EXPR y.d [L21] EXPR x.d [L21] return y.d - x.d; [L21] return y.d - x.d; [L21] return y.d - x.d; [L31] RET, EXPR cast(a) [L31] r = cast(a) [L32] CALL __VERIFIER_assert(r == a) [L7] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 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=23occurred 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, 15 NumberOfCodeBlocks, 15 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...