/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1300.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:53:57,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:53:57,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:53:57,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:53:57,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:53:57,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:53:57,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:53:57,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:53:57,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:53:57,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:53:57,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:53:57,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:53:57,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:53:57,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:53:57,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:53:57,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:53:57,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:53:57,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:53:57,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:53:57,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:53:57,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:53:57,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:53:57,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:53:57,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:53:57,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 14:53:57,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 14:53:57,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 14:53:57,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 14:53:57,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 14:53:57,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 14:53:57,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 14:53:57,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 14:53:57,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 14:53:57,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 14:53:57,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 14:53:57,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 14:53:57,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 14:53:57,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 14:53:57,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:53:57,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:53:57,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:53:57,308 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 [2020-09-24 14:53:57,358 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:53:57,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:53:57,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:53:57,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:53:57,361 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:53:57,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:53:57,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:53:57,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:53:57,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:53:57,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:53:57,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:53:57,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:53:57,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:53:57,364 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:53:57,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:53:57,365 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:53:57,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:53:57,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:53:57,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:53:57,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:53:57,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:53:57,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:53:57,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:53:57,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:53:57,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:53:57,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:53:57,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:53:57,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:53:57,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:53:57,367 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:53:57,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:53:57,804 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:53:57,808 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:53:57,810 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:53:57,811 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:53:57,812 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1300.c [2020-09-24 14:53:57,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a781de8a6/6abc0704336e4cd0be5abc12406d21c8/FLAGbc87c138c [2020-09-24 14:53:58,458 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:53:58,459 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1300.c [2020-09-24 14:53:58,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a781de8a6/6abc0704336e4cd0be5abc12406d21c8/FLAGbc87c138c [2020-09-24 14:53:58,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a781de8a6/6abc0704336e4cd0be5abc12406d21c8 [2020-09-24 14:53:58,798 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:53:58,803 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:53:58,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:53:58,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:53:58,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:53:58,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:53:58" (1/1) ... [2020-09-24 14:53:58,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53352fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:58, skipping insertion in model container [2020-09-24 14:53:58,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:53:58" (1/1) ... [2020-09-24 14:53:58,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:53:58,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:53:59,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:53:59,070 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:53:59,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:53:59,122 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:53:59,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:59 WrapperNode [2020-09-24 14:53:59,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:53:59,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:53:59,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:53:59,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:53:59,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:59" (1/1) ... [2020-09-24 14:53:59,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:59" (1/1) ... [2020-09-24 14:53:59,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:59" (1/1) ... [2020-09-24 14:53:59,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:59" (1/1) ... [2020-09-24 14:53:59,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:59" (1/1) ... [2020-09-24 14:53:59,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:59" (1/1) ... [2020-09-24 14:53:59,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:59" (1/1) ... [2020-09-24 14:53:59,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:53:59,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:53:59,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:53:59,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:53:59,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:59" (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 [2020-09-24 14:53:59,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:53:59,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:53:59,341 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-09-24 14:53:59,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-24 14:53:59,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-09-24 14:53:59,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:53:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:53:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 14:53:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-09-24 14:53:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:53:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 14:53:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:53:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:53:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-24 14:53:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-09-24 14:53:59,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:53:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:53:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:53:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 14:53:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:53:59,746 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:53:59,747 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 14:53:59,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:53:59 BoogieIcfgContainer [2020-09-24 14:53:59,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:53:59,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:53:59,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:53:59,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:53:59,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:53:58" (1/3) ... [2020-09-24 14:53:59,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694c0e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:53:59, skipping insertion in model container [2020-09-24 14:53:59,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:59" (2/3) ... [2020-09-24 14:53:59,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694c0e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:53:59, skipping insertion in model container [2020-09-24 14:53:59,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:53:59" (3/3) ... [2020-09-24 14:53:59,762 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2020-09-24 14:53:59,771 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:53:59,782 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:53:59,802 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:53:59,828 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:53:59,828 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:53:59,828 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:53:59,828 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:53:59,828 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:53:59,829 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:53:59,829 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:53:59,829 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:53:59,851 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-09-24 14:53:59,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-24 14:53:59,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:53:59,860 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:53:59,861 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:53:59,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:53:59,868 INFO L82 PathProgramCache]: Analyzing trace with hash -984491116, now seen corresponding path program 1 times [2020-09-24 14:53:59,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:53:59,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183314786] [2020-09-24 14:53:59,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:53:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:00,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:54:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:00,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 14:54:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:00,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 14:54:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:00,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:54:00,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183314786] [2020-09-24 14:54:00,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:54:00,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:54:00,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884581256] [2020-09-24 14:54:00,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:54:00,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:54:00,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:54:00,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:54:00,185 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 4 states. [2020-09-24 14:54:00,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:54:00,409 INFO L93 Difference]: Finished difference Result 144 states and 157 transitions. [2020-09-24 14:54:00,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:54:00,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-09-24 14:54:00,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:54:00,422 INFO L225 Difference]: With dead ends: 144 [2020-09-24 14:54:00,423 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 14:54:00,427 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 [2020-09-24 14:54:00,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 14:54:00,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-24 14:54:00,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 14:54:00,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2020-09-24 14:54:00,484 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 39 [2020-09-24 14:54:00,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:54:00,485 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2020-09-24 14:54:00,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:54:00,485 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2020-09-24 14:54:00,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 14:54:00,488 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:00,488 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, 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, 1, 1, 1, 1, 1, 1] [2020-09-24 14:54:00,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:54:00,489 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:00,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:00,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1526802571, now seen corresponding path program 1 times [2020-09-24 14:54:00,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:00,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342973927] [2020-09-24 14:54:00,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:00,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:54:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:00,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 14:54:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:00,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 14:54:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:00,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:54:00,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342973927] [2020-09-24 14:54:00,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:54:00,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 14:54:00,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653472005] [2020-09-24 14:54:00,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 14:54:00,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:54:00,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 14:54:00,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:54:00,734 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 5 states. [2020-09-24 14:54:00,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:54:00,914 INFO L93 Difference]: Finished difference Result 96 states and 95 transitions. [2020-09-24 14:54:00,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 14:54:00,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-09-24 14:54:00,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:54:00,917 INFO L225 Difference]: With dead ends: 96 [2020-09-24 14:54:00,917 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 14:54:00,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:54:00,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 14:54:00,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-24 14:54:00,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 14:54:00,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 69 transitions. [2020-09-24 14:54:00,930 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 69 transitions. Word has length 62 [2020-09-24 14:54:00,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:54:00,931 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 69 transitions. [2020-09-24 14:54:00,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 14:54:00,931 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 69 transitions. [2020-09-24 14:54:00,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 14:54:00,933 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:00,933 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:54:00,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:54:00,934 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:00,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:00,934 INFO L82 PathProgramCache]: Analyzing trace with hash 396797035, now seen corresponding path program 1 times [2020-09-24 14:54:00,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:00,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097349818] [2020-09-24 14:54:00,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:54:01,053 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:54:01,054 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:54:01,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:54:01,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:54:01 BoogieIcfgContainer [2020-09-24 14:54:01,089 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:54:01,093 INFO L168 Benchmark]: Toolchain (without parser) took 2291.71 ms. Allocated memory was 141.0 MB in the beginning and 233.8 MB in the end (delta: 92.8 MB). Free memory was 102.9 MB in the beginning and 174.6 MB in the end (delta: -71.7 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:01,094 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 14:54:01,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.06 ms. Allocated memory is still 141.0 MB. Free memory was 102.2 MB in the beginning and 91.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:01,095 INFO L168 Benchmark]: Boogie Preprocessor took 131.16 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 91.6 MB in the beginning and 181.8 MB in the end (delta: -90.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:01,096 INFO L168 Benchmark]: RCFGBuilder took 497.82 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 159.8 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:01,097 INFO L168 Benchmark]: TraceAbstraction took 1335.05 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 159.2 MB in the beginning and 174.6 MB in the end (delta: -15.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:01,101 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 319.06 ms. Allocated memory is still 141.0 MB. Free memory was 102.2 MB in the beginning and 91.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.16 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 91.6 MB in the beginning and 181.8 MB in the end (delta: -90.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 497.82 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 159.8 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1335.05 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 159.2 MB in the beginning and 174.6 MB in the end (delta: -15.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 27, overapproximation of bitwiseAnd at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 58, overapproximation of to_real at line 55. Possible FailurePath: [L50] double x = __VERIFIER_nondet_double(); [L53] CALL, EXPR isinf_double(x) [L17] __int32_t hx, lx; [L19] ieee_double_shape_type ew_u; [L20] ew_u.value = (x) [L21] EXPR ew_u.parts.msw [L21] (hx) = ew_u.parts.msw [L22] EXPR ew_u.parts.lsw [L22] (lx) = ew_u.parts.lsw [L24] hx &= 0x7fffffff [L25] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L26] hx = 0x7ff00000 - hx [L27] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L53] RET, EXPR isinf_double(x) [L53] !isinf_double(x) && !isnan_double(x) [L53] CALL, EXPR isnan_double(x) [L31] return x != x; [L53] RET, EXPR isnan_double(x) [L53] !isinf_double(x) && !isnan_double(x) [L53] COND TRUE !isinf_double(x) && !isnan_double(x) [L55] CALL, EXPR isfinite_double(x) [L34] __int32_t hx; [L36] ieee_double_shape_type gh_u; [L37] gh_u.value = (x) [L38] EXPR gh_u.parts.msw [L38] (hx) = gh_u.parts.msw [L40] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L55] RET, EXPR isfinite_double(x) [L55] double res = isfinite_double(x); [L58] COND TRUE res == 0.0 [L59] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 143 SDtfs, 42 SDslu, 143 SDs, 0 SdLazy, 168 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 8493 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...