/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 0.1.25-89f541c [2020-08-27 21:47:00,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:47:00,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:47:00,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:47:00,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:47:00,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:47:00,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:47:00,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:47:00,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:47:00,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:47:00,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:47:00,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:47:00,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:47:00,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:47:00,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:47:00,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:47:00,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:47:00,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:47:00,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:47:00,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:47:00,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:47:00,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:47:00,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:47:00,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:47:00,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:47:00,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:47:00,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:47:00,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:47:00,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:47:00,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:47:00,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:47:00,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:47:00,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:47:00,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:47:00,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:47:00,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:47:00,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:47:00,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:47:00,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:47:00,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:47:00,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:47:00,513 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 [2020-08-27 21:47:00,566 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:47:00,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:47:00,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:47:00,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:47:00,574 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:47:00,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:47:00,575 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:47:00,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:47:00,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:47:00,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:47:00,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:47:00,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:47:00,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:47:00,576 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:47:00,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:47:00,577 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:47:00,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:47:00,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:47:00,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:47:00,578 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:47:00,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:47:00,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:47:00,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:47:00,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:47:00,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:47:00,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:47:00,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:47:00,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:47:00,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:47:00,580 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 [2020-08-27 21:47:01,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:47:01,132 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:47:01,137 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:47:01,139 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:47:01,139 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:47:01,141 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c [2020-08-27 21:47:01,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aff4f1afc/9c185520b2694057acb2822b73a517a3/FLAG55d859adf [2020-08-27 21:47:01,829 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:47:01,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c [2020-08-27 21:47:01,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aff4f1afc/9c185520b2694057acb2822b73a517a3/FLAG55d859adf [2020-08-27 21:47:02,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aff4f1afc/9c185520b2694057acb2822b73a517a3 [2020-08-27 21:47:02,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:47:02,172 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:47:02,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:47:02,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:47:02,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:47:02,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:47:02" (1/1) ... [2020-08-27 21:47:02,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:02, skipping insertion in model container [2020-08-27 21:47:02,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:47:02" (1/1) ... [2020-08-27 21:47:02,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:47:02,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:47:02,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:47:02,542 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:47:02,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:47:02,702 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:47:02,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:02 WrapperNode [2020-08-27 21:47:02,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:47:02,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:47:02,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:47:02,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:47:02,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:02" (1/1) ... [2020-08-27 21:47:02,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:02" (1/1) ... [2020-08-27 21:47:02,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:02" (1/1) ... [2020-08-27 21:47:02,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:02" (1/1) ... [2020-08-27 21:47:02,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:02" (1/1) ... [2020-08-27 21:47:02,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:02" (1/1) ... [2020-08-27 21:47:02,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:02" (1/1) ... [2020-08-27 21:47:02,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:47:02,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:47:02,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:47:02,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:47:02,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:02" (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 [2020-08-27 21:47:02,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:47:02,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:47:02,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-08-27 21:47:02,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-27 21:47:02,847 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:47:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:47:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-27 21:47:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-08-27 21:47:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:47:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-27 21:47:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:47:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:47:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:47:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-27 21:47:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-27 21:47:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:47:02,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:47:02,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:47:03,406 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:47:03,406 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-08-27 21:47:03,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:47:03 BoogieIcfgContainer [2020-08-27 21:47:03,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:47:03,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:47:03,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:47:03,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:47:03,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:47:02" (1/3) ... [2020-08-27 21:47:03,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50baa32e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:47:03, skipping insertion in model container [2020-08-27 21:47:03,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:02" (2/3) ... [2020-08-27 21:47:03,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50baa32e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:47:03, skipping insertion in model container [2020-08-27 21:47:03,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:47:03" (3/3) ... [2020-08-27 21:47:03,426 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-08-27 21:47:03,435 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:47:03,447 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:47:03,467 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:47:03,494 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:47:03,494 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:47:03,495 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:47:03,495 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:47:03,495 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:47:03,495 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:47:03,495 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:47:03,495 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:47:03,517 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-08-27 21:47:03,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-27 21:47:03,525 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:47:03,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:47:03,527 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:47:03,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:47:03,535 INFO L82 PathProgramCache]: Analyzing trace with hash 85253742, now seen corresponding path program 1 times [2020-08-27 21:47:03,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:47:03,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093579175] [2020-08-27 21:47:03,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:47:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:03,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:47:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:03,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:47:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:03,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:47:03,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093579175] [2020-08-27 21:47:03,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:47:03,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:47:03,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142018209] [2020-08-27 21:47:03,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:47:03,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:47:03,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:47:03,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:47:03,825 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 4 states. [2020-08-27 21:47:04,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:47:04,183 INFO L93 Difference]: Finished difference Result 124 states and 187 transitions. [2020-08-27 21:47:04,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-27 21:47:04,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-08-27 21:47:04,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:47:04,199 INFO L225 Difference]: With dead ends: 124 [2020-08-27 21:47:04,200 INFO L226 Difference]: Without dead ends: 62 [2020-08-27 21:47:04,205 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 [2020-08-27 21:47:04,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-08-27 21:47:04,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-08-27 21:47:04,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-08-27 21:47:04,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2020-08-27 21:47:04,266 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 16 [2020-08-27 21:47:04,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:47:04,267 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2020-08-27 21:47:04,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:47:04,267 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2020-08-27 21:47:04,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-27 21:47:04,268 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:47:04,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:47:04,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:47:04,269 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:47:04,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:47:04,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1037787104, now seen corresponding path program 1 times [2020-08-27 21:47:04,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:47:04,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359978283] [2020-08-27 21:47:04,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:47:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-27 21:47:04,337 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-27 21:47:04,337 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-27 21:47:04,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:47:04,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:47:04 BoogieIcfgContainer [2020-08-27 21:47:04,364 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-27 21:47:04,367 INFO L168 Benchmark]: Toolchain (without parser) took 2194.17 ms. Allocated memory was 140.5 MB in the beginning and 235.9 MB in the end (delta: 95.4 MB). Free memory was 103.5 MB in the beginning and 203.3 MB in the end (delta: -99.9 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:04,368 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 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. [2020-08-27 21:47:04,369 INFO L168 Benchmark]: CACSL2BoogieTranslator took 528.43 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 103.2 MB in the beginning and 178.6 MB in the end (delta: -75.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:04,370 INFO L168 Benchmark]: Boogie Preprocessor took 65.87 ms. Allocated memory is still 202.4 MB. Free memory was 178.6 MB in the beginning and 176.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:04,371 INFO L168 Benchmark]: RCFGBuilder took 644.21 ms. Allocated memory is still 202.4 MB. Free memory was 176.0 MB in the beginning and 146.1 MB in the end (delta: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:04,372 INFO L168 Benchmark]: TraceAbstraction took 946.11 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 145.5 MB in the beginning and 203.3 MB in the end (delta: -57.8 MB). Peak memory consumption was 63.2 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:04,376 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 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 528.43 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 103.2 MB in the beginning and 178.6 MB in the end (delta: -75.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.87 ms. Allocated memory is still 202.4 MB. Free memory was 178.6 MB in the beginning and 176.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 644.21 ms. Allocated memory is still 202.4 MB. Free memory was 176.0 MB in the beginning and 146.1 MB in the end (delta: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 946.11 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 145.5 MB in the beginning and 203.3 MB in the end (delta: -57.8 MB). Peak memory consumption was 63.2 MB. 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: 0.8s, 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, 0.2s 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, 0.1s 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...