/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=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:40:26,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:40:26,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:40:26,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:40:26,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:40:26,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:40:26,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:40:26,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:40:26,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:40:26,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:40:26,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:40:26,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:40:26,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:40:26,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:40:26,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:40:26,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:40:26,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:40:26,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:40:26,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:40:26,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:40:26,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:40:26,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:40:26,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:40:26,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:40:26,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:40:26,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:40:26,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:40:26,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:40:26,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:40:26,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:40:26,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:40:26,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:40:26,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:40:26,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:40:26,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:40:26,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:40:26,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:40:26,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:40:26,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:40:26,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:40:26,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:40:26,640 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 22:40:26,692 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:40:26,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:40:26,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:40:26,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:40:26,694 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:40:26,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:40:26,695 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:40:26,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:40:26,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:40:26,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:40:26,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:40:26,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:40:26,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:40:26,699 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:40:26,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:40:26,699 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:40:26,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:40:26,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:40:26,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:40:26,700 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:40:26,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:40:26,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:40:26,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:40:26,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:40:26,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:40:26,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:40:26,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:40:26,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:40:26,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:40:26,702 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=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:40:26,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:40:27,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:40:27,009 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:40:27,010 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:40:27,011 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:40:27,011 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-18 22:40:27,081 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/888966446/bef52ac10107438ebc349884b62b5c2a/FLAG9476f996d [2020-08-18 22:40:27,533 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:40:27,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-18 22:40:27,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/888966446/bef52ac10107438ebc349884b62b5c2a/FLAG9476f996d [2020-08-18 22:40:27,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/888966446/bef52ac10107438ebc349884b62b5c2a [2020-08-18 22:40:27,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:40:27,929 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:40:27,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:40:27,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:40:27,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:40:27,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:40:27" (1/1) ... [2020-08-18 22:40:27,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16febf07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:27, skipping insertion in model container [2020-08-18 22:40:27,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:40:27" (1/1) ... [2020-08-18 22:40:27,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:40:27,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:40:28,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:40:28,413 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:40:28,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:40:28,499 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:40:28,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:28 WrapperNode [2020-08-18 22:40:28,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:40:28,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:40:28,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:40:28,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:40:28,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:28" (1/1) ... [2020-08-18 22:40:28,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:28" (1/1) ... [2020-08-18 22:40:28,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:28" (1/1) ... [2020-08-18 22:40:28,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:28" (1/1) ... [2020-08-18 22:40:28,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:28" (1/1) ... [2020-08-18 22:40:28,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:28" (1/1) ... [2020-08-18 22:40:28,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:28" (1/1) ... [2020-08-18 22:40:28,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:40:28,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:40:28,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:40:28,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:40:28,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:28" (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 22:40:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:40:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:40:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 22:40:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-18 22:40:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-18 22:40:28,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:40:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:40:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-18 22:40:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 22:40:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-18 22:40:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:40:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 22:40:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:40:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:40:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 22:40:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:40:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-18 22:40:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:40:28,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:40:28,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 22:40:28,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:40:29,246 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:40:29,247 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-18 22:40:29,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:40:29 BoogieIcfgContainer [2020-08-18 22:40:29,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:40:29,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:40:29,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:40:29,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:40:29,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:40:27" (1/3) ... [2020-08-18 22:40:29,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d2b082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:40:29, skipping insertion in model container [2020-08-18 22:40:29,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:28" (2/3) ... [2020-08-18 22:40:29,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d2b082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:40:29, skipping insertion in model container [2020-08-18 22:40:29,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:40:29" (3/3) ... [2020-08-18 22:40:29,267 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-18 22:40:29,278 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:40:29,290 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:40:29,305 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:40:29,332 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:40:29,333 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:40:29,333 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:40:29,333 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:40:29,333 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:40:29,333 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:40:29,333 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:40:29,334 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:40:29,352 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-18 22:40:29,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 22:40:29,359 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:40:29,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:40:29,361 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:40:29,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:40:29,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-18 22:40:29,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:40:29,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474859589] [2020-08-18 22:40:29,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:40:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:29,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:40:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:29,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:40:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:29,632 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 22:40:29,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474859589] [2020-08-18 22:40:29,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:40:29,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:40:29,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210416272] [2020-08-18 22:40:29,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:40:29,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:40:29,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:40:29,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:40:29,657 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-18 22:40:30,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:40:30,061 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-18 22:40:30,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:40:30,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 22:40:30,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:40:30,075 INFO L225 Difference]: With dead ends: 142 [2020-08-18 22:40:30,075 INFO L226 Difference]: Without dead ends: 69 [2020-08-18 22:40:30,079 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 22:40:30,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-18 22:40:30,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-18 22:40:30,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-18 22:40:30,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-18 22:40:30,130 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-18 22:40:30,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:40:30,130 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-18 22:40:30,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:40:30,131 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-18 22:40:30,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 22:40:30,132 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:40:30,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:40:30,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:40:30,133 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:40:30,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:40:30,133 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-18 22:40:30,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:40:30,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914215086] [2020-08-18 22:40:30,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:40:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:40:30,202 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:40:30,203 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:40:30,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:40:30,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:40:30 BoogieIcfgContainer [2020-08-18 22:40:30,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:40:30,253 INFO L168 Benchmark]: Toolchain (without parser) took 2320.15 ms. Allocated memory was 149.9 MB in the beginning and 232.3 MB in the end (delta: 82.3 MB). Free memory was 104.2 MB in the beginning and 184.4 MB in the end (delta: -80.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:30,254 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 149.9 MB. Free memory was 123.2 MB in the beginning and 123.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 22:40:30,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 568.44 ms. Allocated memory was 149.9 MB in the beginning and 205.0 MB in the end (delta: 55.1 MB). Free memory was 104.0 MB in the beginning and 179.3 MB in the end (delta: -75.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:30,257 INFO L168 Benchmark]: Boogie Preprocessor took 61.73 ms. Allocated memory is still 205.0 MB. Free memory was 179.3 MB in the beginning and 176.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:30,258 INFO L168 Benchmark]: RCFGBuilder took 694.15 ms. Allocated memory is still 205.0 MB. Free memory was 176.6 MB in the beginning and 140.7 MB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:30,259 INFO L168 Benchmark]: TraceAbstraction took 988.56 ms. Allocated memory was 205.0 MB in the beginning and 232.3 MB in the end (delta: 27.3 MB). Free memory was 140.1 MB in the beginning and 184.4 MB in the end (delta: -44.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 22:40:30,263 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 149.9 MB. Free memory was 123.2 MB in the beginning and 123.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 568.44 ms. Allocated memory was 149.9 MB in the beginning and 205.0 MB in the end (delta: 55.1 MB). Free memory was 104.0 MB in the beginning and 179.3 MB in the end (delta: -75.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.73 ms. Allocated memory is still 205.0 MB. Free memory was 179.3 MB in the beginning and 176.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 694.15 ms. Allocated memory is still 205.0 MB. Free memory was 176.6 MB in the beginning and 140.7 MB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 988.56 ms. Allocated memory was 205.0 MB in the beginning and 232.3 MB in the end (delta: 27.3 MB). Free memory was 140.1 MB in the beginning and 184.4 MB in the end (delta: -44.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L187] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 14 SDslu, 85 SDs, 0 SdLazy, 104 SolverSat, 6 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=74occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 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...