/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:02:03,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:02:03,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:02:03,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:02:03,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:02:03,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:02:03,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:02:03,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:02:03,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:02:03,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:02:03,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:02:03,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:02:03,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:02:03,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:02:03,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:02:03,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:02:03,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:02:03,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:02:03,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:02:03,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:02:03,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:02:03,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:02:03,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:02:03,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:02:03,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:02:03,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:02:03,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:02:03,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:02:03,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:02:03,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:02:03,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:02:03,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:02:03,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:02:03,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:02:03,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:02:03,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:02:03,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:02:03,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:02:03,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:02:03,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:02:03,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:02:03,744 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 17:02:03,781 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:02:03,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:02:03,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:02:03,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:02:03,783 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:02:03,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:02:03,784 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:02:03,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:02:03,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:02:03,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:02:03,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:02:03,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:02:03,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:02:03,786 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:02:03,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:02:03,787 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:02:03,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:02:03,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:02:03,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:02:03,787 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:02:03,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:02:03,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:02:03,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:02:03,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:02:03,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:02:03,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:02:03,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:02:03,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:02:03,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:02:03,789 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 17:02:04,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:02:04,144 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:02:04,148 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:02:04,149 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:02:04,150 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:02:04,151 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-18 17:02:04,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c21ddfebb/587c866879184791b9c94f08b9b2af10/FLAG0bd0cb7b3 [2020-08-18 17:02:04,701 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:02:04,703 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-18 17:02:04,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c21ddfebb/587c866879184791b9c94f08b9b2af10/FLAG0bd0cb7b3 [2020-08-18 17:02:05,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c21ddfebb/587c866879184791b9c94f08b9b2af10 [2020-08-18 17:02:05,022 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:02:05,023 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:02:05,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:02:05,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:02:05,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:02:05,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:02:05" (1/1) ... [2020-08-18 17:02:05,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5ae353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:05, skipping insertion in model container [2020-08-18 17:02:05,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:02:05" (1/1) ... [2020-08-18 17:02:05,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:02:05,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:02:05,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:02:05,371 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:02:05,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:02:05,449 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:02:05,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:05 WrapperNode [2020-08-18 17:02:05,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:02:05,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:02:05,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:02:05,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:02:05,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:05" (1/1) ... [2020-08-18 17:02:05,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:05" (1/1) ... [2020-08-18 17:02:05,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:05" (1/1) ... [2020-08-18 17:02:05,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:05" (1/1) ... [2020-08-18 17:02:05,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:05" (1/1) ... [2020-08-18 17:02:05,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:05" (1/1) ... [2020-08-18 17:02:05,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:05" (1/1) ... [2020-08-18 17:02:05,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:02:05,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:02:05,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:02:05,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:02:05,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:05" (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 17:02:05,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:02:05,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:02:05,600 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-18 17:02:05,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-18 17:02:05,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:02:05,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:02:05,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-18 17:02:05,601 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-18 17:02:05,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:02:05,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 17:02:05,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:02:05,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:02:05,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 17:02:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:02:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-18 17:02:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:02:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:02:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 17:02:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:02:06,188 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:02:06,189 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-18 17:02:06,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:02:06 BoogieIcfgContainer [2020-08-18 17:02:06,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:02:06,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:02:06,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:02:06,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:02:06,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:02:05" (1/3) ... [2020-08-18 17:02:06,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738d3e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:02:06, skipping insertion in model container [2020-08-18 17:02:06,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:05" (2/3) ... [2020-08-18 17:02:06,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738d3e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:02:06, skipping insertion in model container [2020-08-18 17:02:06,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:02:06" (3/3) ... [2020-08-18 17:02:06,203 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-08-18 17:02:06,215 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:02:06,223 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:02:06,239 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:02:06,267 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:02:06,267 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:02:06,267 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:02:06,268 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:02:06,268 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:02:06,268 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:02:06,268 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:02:06,269 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:02:06,291 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-18 17:02:06,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 17:02:06,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:02:06,300 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, 1, 1, 1, 1] [2020-08-18 17:02:06,300 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:02:06,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:02:06,307 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-08-18 17:02:06,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:02:06,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491273569] [2020-08-18 17:02:06,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:02:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:06,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:02:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:06,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:02:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:06,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:02:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:06,587 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 17:02:06,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491273569] [2020-08-18 17:02:06,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:02:06,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:02:06,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657060832] [2020-08-18 17:02:06,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:02:06,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:02:06,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:02:06,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:02:06,640 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-18 17:02:07,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:02:07,064 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-18 17:02:07,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 17:02:07,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 17:02:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:02:07,087 INFO L225 Difference]: With dead ends: 138 [2020-08-18 17:02:07,087 INFO L226 Difference]: Without dead ends: 68 [2020-08-18 17:02:07,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 17:02:07,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-18 17:02:07,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-18 17:02:07,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-18 17:02:07,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-18 17:02:07,171 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-18 17:02:07,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:02:07,171 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-18 17:02:07,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:02:07,172 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-18 17:02:07,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 17:02:07,175 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:02:07,175 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, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:02:07,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:02:07,176 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:02:07,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:02:07,177 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-08-18 17:02:07,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:02:07,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980184194] [2020-08-18 17:02:07,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:02:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 17:02:07,344 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 17:02:07,344 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 17:02:07,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:02:07,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:02:07 BoogieIcfgContainer [2020-08-18 17:02:07,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:02:07,374 INFO L168 Benchmark]: Toolchain (without parser) took 2349.17 ms. Allocated memory was 140.5 MB in the beginning and 235.9 MB in the end (delta: 95.4 MB). Free memory was 102.8 MB in the beginning and 190.9 MB in the end (delta: -88.0 MB). Peak memory consumption was 7.4 MB. Max. memory is 7.1 GB. [2020-08-18 17:02:07,375 INFO L168 Benchmark]: CDTParser took 0.18 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 17:02:07,376 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.01 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 178.5 MB in the end (delta: -75.9 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-08-18 17:02:07,377 INFO L168 Benchmark]: Boogie Preprocessor took 86.92 ms. Allocated memory is still 203.9 MB. Free memory was 178.5 MB in the beginning and 175.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-08-18 17:02:07,378 INFO L168 Benchmark]: RCFGBuilder took 656.16 ms. Allocated memory is still 203.9 MB. Free memory was 175.5 MB in the beginning and 140.2 MB in the end (delta: 35.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB. [2020-08-18 17:02:07,378 INFO L168 Benchmark]: TraceAbstraction took 1175.18 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 139.5 MB in the beginning and 190.9 MB in the end (delta: -51.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 17:02:07,382 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 426.01 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 178.5 MB in the end (delta: -75.9 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.92 ms. Allocated memory is still 203.9 MB. Free memory was 178.5 MB in the beginning and 175.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 656.16 ms. Allocated memory is still 203.9 MB. Free memory was 175.5 MB in the beginning and 140.2 MB in the end (delta: 35.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1175.18 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 139.5 MB in the beginning and 190.9 MB in the end (delta: -51.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) [L161] __int32_t hx; [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L180] RET isfinite_double(x) [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); [L182] RET, EXPR fmod_double(x, y) [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x [L186] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 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...