/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=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:15:06,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:15:06,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:15:06,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:15:06,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:15:06,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:15:06,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:15:06,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:15:06,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:15:06,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:15:06,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:15:06,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:15:06,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:15:06,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:15:06,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:15:06,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:15:06,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:15:06,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:15:06,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:15:06,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:15:06,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:15:06,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:15:06,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:15:06,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:15:06,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:15:06,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:15:06,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:15:06,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:15:06,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:15:06,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:15:06,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:15:06,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:15:06,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:15:06,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:15:06,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:15:06,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:15:06,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:15:06,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:15:06,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:15:06,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:15:06,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:15:06,381 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 20:15:06,419 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:15:06,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:15:06,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:15:06,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:15:06,421 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:15:06,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:15:06,422 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:15:06,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:15:06,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:15:06,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:15:06,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:15:06,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:15:06,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:15:06,424 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:15:06,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:15:06,425 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:15:06,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:15:06,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:15:06,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:15:06,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:15:06,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:15:06,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:15:06,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:15:06,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:15:06,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:15:06,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:15:06,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:15:06,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:15:06,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:15:06,427 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=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:15:06,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:15:06,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:15:06,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:15:06,755 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:15:06,756 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:15:06,757 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c [2020-08-18 20:15:06,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a836336c/2c194a0200e14fea845c4580367f4283/FLAGb8bd0c498 [2020-08-18 20:15:07,304 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:15:07,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c [2020-08-18 20:15:07,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a836336c/2c194a0200e14fea845c4580367f4283/FLAGb8bd0c498 [2020-08-18 20:15:07,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a836336c/2c194a0200e14fea845c4580367f4283 [2020-08-18 20:15:07,661 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:15:07,663 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:15:07,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:15:07,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:15:07,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:15:07,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:15:07" (1/1) ... [2020-08-18 20:15:07,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42db8c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:07, skipping insertion in model container [2020-08-18 20:15:07,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:15:07" (1/1) ... [2020-08-18 20:15:07,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:15:07,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:15:07,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:15:07,952 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:15:08,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:15:08,117 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:15:08,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:08 WrapperNode [2020-08-18 20:15:08,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:15:08,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:15:08,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:15:08,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:15:08,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:08" (1/1) ... [2020-08-18 20:15:08,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:08" (1/1) ... [2020-08-18 20:15:08,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:08" (1/1) ... [2020-08-18 20:15:08,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:08" (1/1) ... [2020-08-18 20:15:08,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:08" (1/1) ... [2020-08-18 20:15:08,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:08" (1/1) ... [2020-08-18 20:15:08,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:08" (1/1) ... [2020-08-18 20:15:08,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:15:08,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:15:08,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:15:08,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:15:08,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:08" (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 20:15:08,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:15:08,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:15:08,259 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 20:15:08,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-08-18 20:15:08,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-08-18 20:15:08,260 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:15:08,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:15:08,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-18 20:15:08,260 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 20:15:08,261 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-08-18 20:15:08,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:15:08,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 20:15:08,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:15:08,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:15:08,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:15:08,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 20:15:08,262 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-08-18 20:15:08,262 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:15:08,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:15:08,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:15:08,840 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:15:08,841 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-08-18 20:15:08,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:15:08 BoogieIcfgContainer [2020-08-18 20:15:08,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:15:08,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:15:08,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:15:08,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:15:08,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:15:07" (1/3) ... [2020-08-18 20:15:08,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f073f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:15:08, skipping insertion in model container [2020-08-18 20:15:08,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:08" (2/3) ... [2020-08-18 20:15:08,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f073f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:15:08, skipping insertion in model container [2020-08-18 20:15:08,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:15:08" (3/3) ... [2020-08-18 20:15:08,855 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730a.c [2020-08-18 20:15:08,867 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:15:08,876 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:15:08,892 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:15:08,918 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:15:08,919 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:15:08,919 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:15:08,919 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:15:08,920 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:15:08,920 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:15:08,920 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:15:08,920 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:15:08,942 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-08-18 20:15:08,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 20:15:08,950 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:15:08,951 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] [2020-08-18 20:15:08,952 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:15:08,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:15:08,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1193926202, now seen corresponding path program 1 times [2020-08-18 20:15:08,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:15:08,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006885278] [2020-08-18 20:15:08,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:15:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:15:09,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:15:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:15:09,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:15:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:15:09,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 20:15:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:15:09,208 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 20:15:09,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006885278] [2020-08-18 20:15:09,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:15:09,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:15:09,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366294336] [2020-08-18 20:15:09,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:15:09,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:15:09,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:15:09,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:15:09,234 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-08-18 20:15:09,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:15:09,536 INFO L93 Difference]: Finished difference Result 122 states and 183 transitions. [2020-08-18 20:15:09,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:15:09,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-08-18 20:15:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:15:09,550 INFO L225 Difference]: With dead ends: 122 [2020-08-18 20:15:09,550 INFO L226 Difference]: Without dead ends: 61 [2020-08-18 20:15:09,554 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 20:15:09,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-18 20:15:09,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-08-18 20:15:09,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-08-18 20:15:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2020-08-18 20:15:09,599 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 22 [2020-08-18 20:15:09,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:15:09,600 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2020-08-18 20:15:09,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:15:09,600 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2020-08-18 20:15:09,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 20:15:09,602 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:15:09,602 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] [2020-08-18 20:15:09,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:15:09,603 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:15:09,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:15:09,604 INFO L82 PathProgramCache]: Analyzing trace with hash 788703765, now seen corresponding path program 1 times [2020-08-18 20:15:09,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:15:09,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119886714] [2020-08-18 20:15:09,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:15:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:15:09,722 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:15:09,722 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:15:09,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:15:09,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:15:09 BoogieIcfgContainer [2020-08-18 20:15:09,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:15:09,750 INFO L168 Benchmark]: Toolchain (without parser) took 2086.29 ms. Allocated memory was 140.0 MB in the beginning and 235.9 MB in the end (delta: 95.9 MB). Free memory was 101.3 MB in the beginning and 201.8 MB in the end (delta: -100.4 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2020-08-18 20:15:09,751 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 20:15:09,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.95 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.1 MB in the beginning and 180.0 MB in the end (delta: -78.9 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-08-18 20:15:09,753 INFO L168 Benchmark]: Boogie Preprocessor took 60.41 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 178.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-08-18 20:15:09,754 INFO L168 Benchmark]: RCFGBuilder took 665.93 ms. Allocated memory is still 203.4 MB. Free memory was 178.0 MB in the beginning and 146.2 MB in the end (delta: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. [2020-08-18 20:15:09,755 INFO L168 Benchmark]: TraceAbstraction took 899.54 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 146.2 MB in the beginning and 201.8 MB in the end (delta: -55.6 MB). Peak memory consumption was 64.1 MB. Max. memory is 7.1 GB. [2020-08-18 20:15:09,759 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 451.95 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.1 MB in the beginning and 180.0 MB in the end (delta: -78.9 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.41 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 178.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 665.93 ms. Allocated memory is still 203.4 MB. Free memory was 178.0 MB in the beginning and 146.2 MB in the end (delta: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 899.54 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 146.2 MB in the beginning and 201.8 MB in the end (delta: -55.6 MB). Peak memory consumption was 64.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 160]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 142, overapproximation of someBinaryArithmeticDOUBLEoperation at line 36, overapproximation of bitwiseAnd at line 141. Possible FailurePath: [L20] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L155] double x = 1.0 / 0.0; [L156] CALL, EXPR __ieee754_sqrt(x) [L23] double z; [L24] __int32_t sign = 0x80000000; [L25] __uint32_t r, t1, s1, ix1, q1; [L26] __int32_t ix0, s0, q, m, t, i; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (ix0) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (ix1) = ew_u.parts.lsw [L35] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L36] return x * x + x; [L156] RET, EXPR __ieee754_sqrt(x) [L156] double res = __ieee754_sqrt(x); [L159] CALL, EXPR isinf_double(res) [L134] __int32_t hx, lx; [L136] ieee_double_shape_type ew_u; [L137] ew_u.value = (x) [L138] EXPR ew_u.parts.msw [L138] (hx) = ew_u.parts.msw [L139] EXPR ew_u.parts.lsw [L139] (lx) = ew_u.parts.lsw [L141] hx &= 0x7fffffff [L142] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L143] hx = 0x7ff00000 - hx [L144] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L159] RET, EXPR isinf_double(res) [L159] COND TRUE !isinf_double(res) [L160] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 78 SDtfs, 73 SDslu, 5 SDs, 0 SdLazy, 83 SolverSat, 11 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=65occurred 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, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 1260 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...