/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 produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -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-eb0fd7c [2020-09-21 11:18:32,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:18:32,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:18:32,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:18:32,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:18:32,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:18:32,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:18:32,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:18:32,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:18:32,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:18:32,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:18:32,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:18:32,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:18:32,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:18:32,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:18:32,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:18:32,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:18:32,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:18:32,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:18:32,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:18:32,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:18:32,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:18:32,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:18:32,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:18:32,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:18:32,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:18:32,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:18:32,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:18:32,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:18:32,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:18:32,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:18:32,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:18:32,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:18:32,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:18:32,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:18:32,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:18:32,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:18:32,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:18:32,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:18:32,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:18:32,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:18:32,370 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 [2020-09-21 11:18:32,420 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:18:32,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:18:32,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:18:32,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:18:32,425 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:18:32,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:18:32,425 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:18:32,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:18:32,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:18:32,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:18:32,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:18:32,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:18:32,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:18:32,428 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:18:32,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:18:32,429 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:18:32,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:18:32,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:18:32,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:18:32,429 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:18:32,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:18:32,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:18:32,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:18:32,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:18:32,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:18:32,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:18:32,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:18:32,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:18:32,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:18:32,432 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 -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:18:32,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:18:32,962 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:18:32,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:18:32,968 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:18:32,969 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:18:32,970 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c [2020-09-21 11:18:33,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/886ec7234/7dda35ee91324f28afc3e98c4e1dd143/FLAGbaf7317bb [2020-09-21 11:18:33,657 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:18:33,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c [2020-09-21 11:18:33,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/886ec7234/7dda35ee91324f28afc3e98c4e1dd143/FLAGbaf7317bb [2020-09-21 11:18:33,961 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/886ec7234/7dda35ee91324f28afc3e98c4e1dd143 [2020-09-21 11:18:33,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:18:33,980 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:18:33,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:33,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:18:33,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:18:33,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:33" (1/1) ... [2020-09-21 11:18:33,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd36ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:33, skipping insertion in model container [2020-09-21 11:18:33,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:33" (1/1) ... [2020-09-21 11:18:34,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:18:34,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:18:34,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:34,325 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:18:34,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:34,483 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:18:34,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:34 WrapperNode [2020-09-21 11:18:34,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:34,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:18:34,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:18:34,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:18:34,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:34" (1/1) ... [2020-09-21 11:18:34,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:34" (1/1) ... [2020-09-21 11:18:34,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:34" (1/1) ... [2020-09-21 11:18:34,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:34" (1/1) ... [2020-09-21 11:18:34,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:34" (1/1) ... [2020-09-21 11:18:34,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:34" (1/1) ... [2020-09-21 11:18:34,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:34" (1/1) ... [2020-09-21 11:18:34,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:18:34,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:18:34,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:18:34,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:18:34,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:34" (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 [2020-09-21 11:18:34,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:18:34,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:18:34,630 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 11:18:34,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-09-21 11:18:34,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-09-21 11:18:34,631 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:18:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:18:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-21 11:18:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 11:18:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-09-21 11:18:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:18:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 11:18:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:18:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:18:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:18:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 11:18:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-09-21 11:18:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:18:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:18:34,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:18:35,154 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:18:35,155 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-09-21 11:18:35,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:35 BoogieIcfgContainer [2020-09-21 11:18:35,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:18:35,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:18:35,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:18:35,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:18:35,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:18:33" (1/3) ... [2020-09-21 11:18:35,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e58240d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:35, skipping insertion in model container [2020-09-21 11:18:35,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:34" (2/3) ... [2020-09-21 11:18:35,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e58240d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:35, skipping insertion in model container [2020-09-21 11:18:35,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:35" (3/3) ... [2020-09-21 11:18:35,172 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730a.c [2020-09-21 11:18:35,185 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:18:35,196 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:18:35,226 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:18:35,263 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:18:35,263 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:18:35,263 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:18:35,264 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:18:35,264 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:18:35,264 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:18:35,264 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:18:35,264 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:18:35,291 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-21 11:18:35,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 11:18:35,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:35,302 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] [2020-09-21 11:18:35,303 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:35,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:35,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1193926202, now seen corresponding path program 1 times [2020-09-21 11:18:35,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:35,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946830370] [2020-09-21 11:18:35,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:35,473 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:35,474 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:35,474 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:35,475 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:35,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 11:18:35,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:35,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:18:35,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:35,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:35,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:18:35,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:35,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:35,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:35,595 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:35,595 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:35,600 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:35,600 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:35,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:35,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:35,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:18:35,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:35,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:35,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:35,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:35,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:18:35,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:35,657 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:35,658 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:35,658 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:35,658 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:35,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:18:35,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:35,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:35,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:35,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:35,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:18:35,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:35,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:35,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-21 11:18:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:35,688 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:35,689 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:35,689 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:35,689 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:35,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:18:35,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:35,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:35,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:35,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:35,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:18:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:35,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:18:35,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946830370] [2020-09-21 11:18:35,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:35,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:18:35,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043110637] [2020-09-21 11:18:35,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:18:35,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:35,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:18:35,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:18:35,746 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-09-21 11:18:36,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:36,131 INFO L93 Difference]: Finished difference Result 122 states and 183 transitions. [2020-09-21 11:18:36,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:18:36,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-09-21 11:18:36,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:36,147 INFO L225 Difference]: With dead ends: 122 [2020-09-21 11:18:36,147 INFO L226 Difference]: Without dead ends: 61 [2020-09-21 11:18:36,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:18:36,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-21 11:18:36,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-09-21 11:18:36,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-21 11:18:36,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2020-09-21 11:18:36,207 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 22 [2020-09-21 11:18:36,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:36,207 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2020-09-21 11:18:36,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:18:36,208 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2020-09-21 11:18:36,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 11:18:36,209 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:36,224 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] [2020-09-21 11:18:36,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:18:36,225 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:36,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:36,226 INFO L82 PathProgramCache]: Analyzing trace with hash 788703765, now seen corresponding path program 1 times [2020-09-21 11:18:36,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:36,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767544078] [2020-09-21 11:18:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:18:36,361 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:18:36,362 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:18:36,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:18:36,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:18:36 BoogieIcfgContainer [2020-09-21 11:18:36,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:18:36,395 INFO L168 Benchmark]: Toolchain (without parser) took 2418.13 ms. Allocated memory was 137.4 MB in the beginning and 229.1 MB in the end (delta: 91.8 MB). Free memory was 100.0 MB in the beginning and 192.2 MB in the end (delta: -92.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:18:36,396 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:18:36,397 INFO L168 Benchmark]: CACSL2BoogieTranslator took 503.46 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 99.4 MB in the beginning and 176.6 MB in the end (delta: -77.3 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:36,398 INFO L168 Benchmark]: Boogie Preprocessor took 62.93 ms. Allocated memory is still 199.8 MB. Free memory was 176.6 MB in the beginning and 174.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:36,399 INFO L168 Benchmark]: RCFGBuilder took 613.14 ms. Allocated memory is still 199.8 MB. Free memory was 174.5 MB in the beginning and 143.0 MB in the end (delta: 31.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:36,400 INFO L168 Benchmark]: TraceAbstraction took 1228.71 ms. Allocated memory was 199.8 MB in the beginning and 229.1 MB in the end (delta: 29.4 MB). Free memory was 142.3 MB in the beginning and 192.2 MB in the end (delta: -49.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:18:36,404 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 503.46 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 99.4 MB in the beginning and 176.6 MB in the end (delta: -77.3 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.93 ms. Allocated memory is still 199.8 MB. Free memory was 176.6 MB in the beginning and 174.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 613.14 ms. Allocated memory is still 199.8 MB. Free memory was 174.5 MB in the beginning and 143.0 MB in the end (delta: 31.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1228.71 ms. Allocated memory was 199.8 MB in the beginning and 229.1 MB in the end (delta: 29.4 MB). Free memory was 142.3 MB in the beginning and 192.2 MB in the end (delta: -49.9 MB). There was no memory consumed. 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: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, 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, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 0.2s 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...