/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=LOWLEXORDER -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 18:38:41,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:38:41,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:38:41,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:38:41,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:38:41,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:38:41,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:38:41,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:38:41,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:38:41,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:38:41,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:38:41,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:38:41,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:38:41,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:38:41,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:38:41,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:38:41,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:38:41,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:38:41,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:38:41,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:38:41,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:38:41,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:38:41,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:38:41,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:38:41,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:38:41,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:38:41,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:38:41,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:38:41,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:38:41,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:38:41,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:38:41,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:38:41,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:38:41,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:38:41,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:38:41,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:38:41,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:38:41,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:38:41,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:38:41,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:38:41,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:38:41,357 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 18:38:41,380 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:38:41,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:38:41,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:38:41,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:38:41,382 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:38:41,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:38:41,382 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:38:41,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:38:41,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:38:41,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:38:41,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:38:41,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:38:41,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:38:41,384 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:38:41,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:38:41,384 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:38:41,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:38:41,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:38:41,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:38:41,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:38:41,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:38:41,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:38:41,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:38:41,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:38:41,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:38:41,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:38:41,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:38:41,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:38:41,387 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:38:41,387 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=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:38:41,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:38:41,732 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:38:41,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:38:41,740 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:38:41,743 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:38:41,744 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-18 18:38:41,809 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d1dc966f/78a12c7c5c09400c82276d89051b634d/FLAG3c4733ecc [2020-08-18 18:38:42,251 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:38:42,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-18 18:38:42,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d1dc966f/78a12c7c5c09400c82276d89051b634d/FLAG3c4733ecc [2020-08-18 18:38:42,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d1dc966f/78a12c7c5c09400c82276d89051b634d [2020-08-18 18:38:42,585 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:38:42,587 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:38:42,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:38:42,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:38:42,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:38:42,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:38:42" (1/1) ... [2020-08-18 18:38:42,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f93aad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:42, skipping insertion in model container [2020-08-18 18:38:42,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:38:42" (1/1) ... [2020-08-18 18:38:42,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:38:42,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:38:42,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:38:42,877 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:38:43,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:38:43,103 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:38:43,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:43 WrapperNode [2020-08-18 18:38:43,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:38:43,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:38:43,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:38:43,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:38:43,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:43" (1/1) ... [2020-08-18 18:38:43,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:43" (1/1) ... [2020-08-18 18:38:43,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:43" (1/1) ... [2020-08-18 18:38:43,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:43" (1/1) ... [2020-08-18 18:38:43,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:43" (1/1) ... [2020-08-18 18:38:43,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:43" (1/1) ... [2020-08-18 18:38:43,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:43" (1/1) ... [2020-08-18 18:38:43,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:38:43,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:38:43,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:38:43,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:38:43,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:43" (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 18:38:43,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:38:43,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:38:43,237 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 18:38:43,237 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-18 18:38:43,237 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-18 18:38:43,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:38:43,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:38:43,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-18 18:38:43,238 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 18:38:43,238 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-18 18:38:43,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:38:43,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 18:38:43,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:38:43,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:38:43,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 18:38:43,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:38:43,239 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-18 18:38:43,239 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:38:43,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:38:43,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 18:38:43,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:38:43,871 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:38:43,871 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-18 18:38:43,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:38:43 BoogieIcfgContainer [2020-08-18 18:38:43,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:38:43,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:38:43,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:38:43,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:38:43,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:38:42" (1/3) ... [2020-08-18 18:38:43,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf886f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:38:43, skipping insertion in model container [2020-08-18 18:38:43,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:43" (2/3) ... [2020-08-18 18:38:43,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf886f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:38:43, skipping insertion in model container [2020-08-18 18:38:43,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:38:43" (3/3) ... [2020-08-18 18:38:43,887 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-08-18 18:38:43,899 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:38:43,908 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:38:43,923 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:38:43,951 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:38:43,951 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:38:43,951 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:38:43,951 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:38:43,952 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:38:43,952 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:38:43,952 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:38:43,952 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:38:43,973 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-18 18:38:43,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 18:38:43,981 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:38:43,982 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 18:38:43,983 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:38:43,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:38:43,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-08-18 18:38:43,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:38:43,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069245936] [2020-08-18 18:38:43,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:38:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:38:44,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:38:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:38:44,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:38:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:38:44,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:38:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:38:44,242 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 18:38:44,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069245936] [2020-08-18 18:38:44,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:38:44,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:38:44,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455686365] [2020-08-18 18:38:44,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:38:44,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:38:44,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:38:44,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:38:44,274 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-18 18:38:44,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:38:44,618 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-18 18:38:44,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 18:38:44,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 18:38:44,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:38:44,633 INFO L225 Difference]: With dead ends: 138 [2020-08-18 18:38:44,633 INFO L226 Difference]: Without dead ends: 68 [2020-08-18 18:38:44,638 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 18:38:44,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-18 18:38:44,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-18 18:38:44,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-18 18:38:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-18 18:38:44,694 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-18 18:38:44,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:38:44,694 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-18 18:38:44,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:38:44,695 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-18 18:38:44,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 18:38:44,696 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:38:44,696 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 18:38:44,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:38:44,697 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:38:44,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:38:44,698 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-08-18 18:38:44,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:38:44,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808146789] [2020-08-18 18:38:44,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:38:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 18:38:44,845 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 18:38:44,845 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 18:38:44,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:38:44,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:38:44 BoogieIcfgContainer [2020-08-18 18:38:44,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:38:44,891 INFO L168 Benchmark]: Toolchain (without parser) took 2304.04 ms. Allocated memory was 139.5 MB in the beginning and 237.5 MB in the end (delta: 98.0 MB). Free memory was 102.3 MB in the beginning and 194.9 MB in the end (delta: -92.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. [2020-08-18 18:38:44,892 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 18:38:44,893 INFO L168 Benchmark]: CACSL2BoogieTranslator took 516.68 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 102.1 MB in the beginning and 179.6 MB in the end (delta: -77.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-08-18 18:38:44,894 INFO L168 Benchmark]: Boogie Preprocessor took 70.61 ms. Allocated memory is still 204.5 MB. Free memory was 179.6 MB in the beginning and 176.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-18 18:38:44,895 INFO L168 Benchmark]: RCFGBuilder took 701.08 ms. Allocated memory is still 204.5 MB. Free memory was 176.9 MB in the beginning and 140.5 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2020-08-18 18:38:44,896 INFO L168 Benchmark]: TraceAbstraction took 1010.01 ms. Allocated memory was 204.5 MB in the beginning and 237.5 MB in the end (delta: 33.0 MB). Free memory was 139.8 MB in the beginning and 194.9 MB in the end (delta: -55.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 18:38:44,900 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 516.68 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 102.1 MB in the beginning and 179.6 MB in the end (delta: -77.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.61 ms. Allocated memory is still 204.5 MB. Free memory was 179.6 MB in the beginning and 176.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 701.08 ms. Allocated memory is still 204.5 MB. Free memory was 176.9 MB in the beginning and 140.5 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1010.01 ms. Allocated memory was 204.5 MB in the beginning and 237.5 MB in the end (delta: 33.0 MB). Free memory was 139.8 MB in the beginning and 194.9 MB in the end (delta: -55.0 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: 0.9s, 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, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...