/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:29:08,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:29:08,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:29:08,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:29:08,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:29:08,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:29:08,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:29:08,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:29:08,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:29:08,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:29:08,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:29:08,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:29:08,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:29:08,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:29:08,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:29:08,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:29:08,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:29:08,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:29:08,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:29:08,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:29:08,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:29:08,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:29:08,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:29:08,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:29:08,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:29:08,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:29:08,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:29:08,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:29:08,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:29:08,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:29:08,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:29:08,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:29:08,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:29:08,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:29:08,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:29:08,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:29:08,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:29:08,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:29:08,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:29:08,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:29:08,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:29:08,421 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 10:29:08,463 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:29:08,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:29:08,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:29:08,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:29:08,466 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:29:08,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:29:08,467 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:29:08,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:29:08,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:29:08,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:29:08,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:29:08,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:29:08,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:29:08,469 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:29:08,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:29:08,470 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:29:08,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:29:08,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:29:08,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:29:08,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:29:08,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:29:08,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:29:08,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:29:08,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:29:08,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:29:08,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:29:08,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:29:08,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:29:08,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:29:08,473 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 -> false [2020-08-18 10:29:08,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:29:08,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:29:08,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:29:08,847 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:29:08,848 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:29:08,848 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c [2020-08-18 10:29:08,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8dc8d97fc/ebf89282437d46d18cb2effca3ad43ac/FLAG464b313b4 [2020-08-18 10:29:09,414 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:29:09,414 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c [2020-08-18 10:29:09,421 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8dc8d97fc/ebf89282437d46d18cb2effca3ad43ac/FLAG464b313b4 [2020-08-18 10:29:09,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8dc8d97fc/ebf89282437d46d18cb2effca3ad43ac [2020-08-18 10:29:09,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:29:09,754 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:29:09,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:29:09,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:29:09,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:29:09,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:29:09" (1/1) ... [2020-08-18 10:29:09,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@87e9861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:09, skipping insertion in model container [2020-08-18 10:29:09,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:29:09" (1/1) ... [2020-08-18 10:29:09,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:29:09,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:29:10,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:29:10,017 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:29:10,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:29:10,174 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:29:10,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:10 WrapperNode [2020-08-18 10:29:10,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:29:10,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:29:10,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:29:10,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:29:10,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:10" (1/1) ... [2020-08-18 10:29:10,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:10" (1/1) ... [2020-08-18 10:29:10,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:10" (1/1) ... [2020-08-18 10:29:10,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:10" (1/1) ... [2020-08-18 10:29:10,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:10" (1/1) ... [2020-08-18 10:29:10,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:10" (1/1) ... [2020-08-18 10:29:10,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:10" (1/1) ... [2020-08-18 10:29:10,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:29:10,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:29:10,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:29:10,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:29:10,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:10" (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 10:29:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:29:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:29:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-08-18 10:29:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-18 10:29:10,296 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:29:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:29:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-18 10:29:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-08-18 10:29:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:29:10,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 10:29:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:29:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:29:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:29:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 10:29:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-18 10:29:10,297 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:29:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:29:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:29:10,792 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:29:10,792 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-08-18 10:29:10,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:29:10 BoogieIcfgContainer [2020-08-18 10:29:10,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:29:10,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:29:10,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:29:10,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:29:10,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:29:09" (1/3) ... [2020-08-18 10:29:10,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794bbf76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:29:10, skipping insertion in model container [2020-08-18 10:29:10,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:10" (2/3) ... [2020-08-18 10:29:10,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794bbf76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:29:10, skipping insertion in model container [2020-08-18 10:29:10,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:29:10" (3/3) ... [2020-08-18 10:29:10,806 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-08-18 10:29:10,817 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:29:10,825 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:29:10,839 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:29:10,865 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:29:10,865 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:29:10,865 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:29:10,865 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:29:10,866 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:29:10,866 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:29:10,866 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:29:10,866 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:29:10,885 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-08-18 10:29:10,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 10:29:10,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:29:10,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:29:10,893 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:29:10,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:29:10,900 INFO L82 PathProgramCache]: Analyzing trace with hash 85253742, now seen corresponding path program 1 times [2020-08-18 10:29:10,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:29:10,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107705576] [2020-08-18 10:29:10,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:29:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:29:11,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:29:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:29:11,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:29:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:29:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:29:11,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107705576] [2020-08-18 10:29:11,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:29:11,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:29:11,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141904810] [2020-08-18 10:29:11,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:29:11,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:29:11,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:29:11,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:29:11,133 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 4 states. [2020-08-18 10:29:11,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:29:11,438 INFO L93 Difference]: Finished difference Result 124 states and 187 transitions. [2020-08-18 10:29:11,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 10:29:11,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-08-18 10:29:11,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:29:11,452 INFO L225 Difference]: With dead ends: 124 [2020-08-18 10:29:11,452 INFO L226 Difference]: Without dead ends: 62 [2020-08-18 10:29:11,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:29:11,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-08-18 10:29:11,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-08-18 10:29:11,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-08-18 10:29:11,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2020-08-18 10:29:11,531 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 16 [2020-08-18 10:29:11,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:29:11,531 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2020-08-18 10:29:11,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:29:11,532 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2020-08-18 10:29:11,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 10:29:11,533 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:29:11,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:29:11,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:29:11,534 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:29:11,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:29:11,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1037787104, now seen corresponding path program 1 times [2020-08-18 10:29:11,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:29:11,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23837534] [2020-08-18 10:29:11,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:29:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 10:29:11,577 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 10:29:11,577 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 10:29:11,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:29:11,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:29:11 BoogieIcfgContainer [2020-08-18 10:29:11,604 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 10:29:11,611 INFO L168 Benchmark]: Toolchain (without parser) took 1852.36 ms. Allocated memory was 143.1 MB in the beginning and 232.8 MB in the end (delta: 89.7 MB). Free memory was 106.3 MB in the beginning and 196.0 MB in the end (delta: -89.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 10:29:11,612 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 10:29:11,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 420.18 ms. Allocated memory was 143.1 MB in the beginning and 204.5 MB in the end (delta: 61.3 MB). Free memory was 105.9 MB in the beginning and 180.3 MB in the end (delta: -74.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-08-18 10:29:11,616 INFO L168 Benchmark]: Boogie Preprocessor took 54.73 ms. Allocated memory is still 204.5 MB. Free memory was 180.3 MB in the beginning and 178.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-08-18 10:29:11,617 INFO L168 Benchmark]: RCFGBuilder took 566.44 ms. Allocated memory is still 204.5 MB. Free memory was 177.8 MB in the beginning and 148.2 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2020-08-18 10:29:11,618 INFO L168 Benchmark]: TraceAbstraction took 805.70 ms. Allocated memory was 204.5 MB in the beginning and 232.8 MB in the end (delta: 28.3 MB). Free memory was 147.6 MB in the beginning and 196.0 MB in the end (delta: -48.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 10:29:11,624 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 420.18 ms. Allocated memory was 143.1 MB in the beginning and 204.5 MB in the end (delta: 61.3 MB). Free memory was 105.9 MB in the beginning and 180.3 MB in the end (delta: -74.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.73 ms. Allocated memory is still 204.5 MB. Free memory was 180.3 MB in the beginning and 178.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 566.44 ms. Allocated memory is still 204.5 MB. Free memory was 177.8 MB in the beginning and 148.2 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 805.70 ms. Allocated memory was 204.5 MB in the beginning and 232.8 MB in the end (delta: 28.3 MB). Free memory was 147.6 MB in the beginning and 196.0 MB in the end (delta: -48.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 154]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 149, overapproximation of someBinaryArithmeticDOUBLEoperation at line 33, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryDOUBLEComparisonOperation at line 153. Possible FailurePath: [L17] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L149] double x = -0.0; [L150] CALL, EXPR __ieee754_sqrt(x) [L20] double z; [L21] __int32_t sign = 0x80000000; [L22] __uint32_t r, t1, s1, ix1, q1; [L23] __int32_t ix0, s0, q, m, t, i; [L26] ieee_double_shape_type ew_u; [L27] ew_u.value = (x) [L28] EXPR ew_u.parts.msw [L28] (ix0) = ew_u.parts.msw [L29] EXPR ew_u.parts.lsw [L29] (ix1) = ew_u.parts.lsw [L32] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L33] return x * x + x; [L150] RET, EXPR __ieee754_sqrt(x) [L150] double res = __ieee754_sqrt(x); [L153] EXPR res == -0.0 && __signbit_double(res) == 1 [L153] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L154] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 80 SDtfs, 75 SDslu, 5 SDs, 0 SdLazy, 85 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 630 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...