/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_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:40:27,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:40:27,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:40:27,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:40:27,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:40:27,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:40:27,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:40:27,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:40:27,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:40:27,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:40:27,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:40:27,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:40:27,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:40:27,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:40:27,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:40:27,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:40:27,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:40:27,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:40:27,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:40:27,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:40:27,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:40:27,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:40:27,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:40:27,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:40:27,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:40:27,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:40:27,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:40:27,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:40:27,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:40:27,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:40:27,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:40:27,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:40:27,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:40:27,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:40:27,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:40:27,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:40:27,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:40:27,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:40:27,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:40:27,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:40:27,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:40:27,225 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 22:40:27,247 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:40:27,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:40:27,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:40:27,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:40:27,249 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:40:27,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:40:27,249 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:40:27,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:40:27,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:40:27,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:40:27,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:40:27,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:40:27,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:40:27,250 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:40:27,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:40:27,251 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:40:27,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:40:27,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:40:27,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:40:27,251 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:40:27,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:40:27,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:40:27,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:40:27,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:40:27,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:40:27,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:40:27,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:40:27,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:40:27,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:40:27,253 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 22:40:27,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:40:27,558 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:40:27,561 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:40:27,563 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:40:27,563 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:40:27,564 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-18 22:40:27,638 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a44a5918/8ba44145852c4e29a4a32300c2a0aaaf/FLAGbd0723b0a [2020-08-18 22:40:28,091 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:40:28,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-18 22:40:28,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a44a5918/8ba44145852c4e29a4a32300c2a0aaaf/FLAGbd0723b0a [2020-08-18 22:40:28,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a44a5918/8ba44145852c4e29a4a32300c2a0aaaf [2020-08-18 22:40:28,508 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:40:28,510 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:40:28,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:40:28,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:40:28,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:40:28,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:40:28" (1/1) ... [2020-08-18 22:40:28,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13e50368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:28, skipping insertion in model container [2020-08-18 22:40:28,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:40:28" (1/1) ... [2020-08-18 22:40:28,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:40:28,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:40:28,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:40:28,867 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:40:28,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:40:28,945 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:40:28,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:28 WrapperNode [2020-08-18 22:40:28,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:40:28,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:40:28,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:40:28,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:40:28,957 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 22:40:28,957 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 22:40:28,969 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 22:40:28,970 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 22:40:28,987 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 22:40:28,998 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 22:40:29,001 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 22:40:29,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:40:29,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:40:29,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:40:29,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:40:29,007 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 22:40:29,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:40:29,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:40:29,066 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 22:40:29,067 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-18 22:40:29,067 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-18 22:40:29,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:40:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:40:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-18 22:40:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 22:40:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-18 22:40:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:40:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 22:40:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:40:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:40:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 22:40:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:40:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-18 22:40:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:40:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:40:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 22:40:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:40:29,607 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:40:29,607 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-18 22:40:29,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:40:29 BoogieIcfgContainer [2020-08-18 22:40:29,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:40:29,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:40:29,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:40:29,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:40:29,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:40:28" (1/3) ... [2020-08-18 22:40:29,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6d5628 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 22:40:29,618 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 22:40:29,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6d5628 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 22:40:29,618 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 22:40:29,620 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-08-18 22:40:29,630 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:40:29,638 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:40:29,652 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:40:29,676 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:40:29,677 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:40:29,677 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:40:29,677 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:40:29,677 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:40:29,677 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:40:29,678 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:40:29,678 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:40:29,697 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-18 22:40:29,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 22:40:29,704 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:40:29,704 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 22:40:29,705 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:40:29,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:40:29,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-08-18 22:40:29,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:40:29,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6784829] [2020-08-18 22:40:29,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:40:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:29,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:40:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:29,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:40:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:29,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 22:40:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:29,948 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 22:40:29,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6784829] [2020-08-18 22:40:29,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:40:29,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:40:29,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198690241] [2020-08-18 22:40:29,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:40:29,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:40:29,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:40:29,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:40:29,976 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-18 22:40:30,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:40:30,281 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-18 22:40:30,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:40:30,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 22:40:30,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:40:30,293 INFO L225 Difference]: With dead ends: 138 [2020-08-18 22:40:30,293 INFO L226 Difference]: Without dead ends: 68 [2020-08-18 22:40:30,297 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 22:40:30,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-18 22:40:30,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-18 22:40:30,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-18 22:40:30,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-18 22:40:30,343 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-18 22:40:30,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:40:30,343 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-18 22:40:30,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:40:30,344 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-18 22:40:30,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 22:40:30,345 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:40:30,345 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 22:40:30,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:40:30,346 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:40:30,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:40:30,346 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-08-18 22:40:30,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:40:30,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079474063] [2020-08-18 22:40:30,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:40:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:40:30,449 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:40:30,449 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:40:30,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:40:30,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:40:30 BoogieIcfgContainer [2020-08-18 22:40:30,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:40:30,474 INFO L168 Benchmark]: Toolchain (without parser) took 1964.25 ms. Allocated memory was 145.8 MB in the beginning and 233.8 MB in the end (delta: 88.1 MB). Free memory was 99.3 MB in the beginning and 191.4 MB in the end (delta: -92.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 22:40:30,475 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 145.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 22:40:30,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.76 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 99.1 MB in the beginning and 176.2 MB in the end (delta: -77.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:30,477 INFO L168 Benchmark]: Boogie Preprocessor took 58.71 ms. Allocated memory is still 201.9 MB. Free memory was 176.2 MB in the beginning and 173.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:30,478 INFO L168 Benchmark]: RCFGBuilder took 606.33 ms. Allocated memory is still 201.9 MB. Free memory was 173.5 MB in the beginning and 138.0 MB in the end (delta: 35.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:30,479 INFO L168 Benchmark]: TraceAbstraction took 858.85 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 137.3 MB in the beginning and 191.4 MB in the end (delta: -54.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 22:40:30,483 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 145.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 434.76 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 99.1 MB in the beginning and 176.2 MB in the end (delta: -77.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.71 ms. Allocated memory is still 201.9 MB. Free memory was 176.2 MB in the beginning and 173.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 606.33 ms. Allocated memory is still 201.9 MB. Free memory was 173.5 MB in the beginning and 138.0 MB in the end (delta: 35.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 858.85 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 137.3 MB in the beginning and 191.4 MB in the end (delta: -54.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: 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 someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) [L164] __int32_t hx; [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L183] RET isfinite_double(x) [L183] COND TRUE isfinite_double(x) [L185] 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); [L185] RET, EXPR fmod_double(x, y) [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x [L189] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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...