/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --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_1071.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:36:58,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:36:58,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:36:58,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:36:58,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:36:58,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:36:58,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:36:58,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:36:58,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:36:58,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:36:58,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:36:58,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:36:58,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:36:58,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:36:58,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:36:58,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:36:58,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:36:58,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:36:58,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:36:58,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:36:58,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:36:58,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:36:58,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:36:58,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:36:58,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:36:58,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:36:58,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:36:58,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:36:58,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:36:58,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:36:58,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:36:58,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:36:58,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:36:58,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:36:58,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:36:58,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:36:58,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:36:58,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:36:58,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:36:58,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:36:58,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:36:58,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 22:36:58,493 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:36:58,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:36:58,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:36:58,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:36:58,495 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:36:58,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:36:58,495 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:36:58,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:36:58,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:36:58,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:36:58,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:36:58,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:36:58,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:36:58,497 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:36:58,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:36:58,497 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:36:58,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:36:58,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:36:58,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:36:58,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:36:58,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:36:58,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:36:58,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:36:58,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:36:58,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:36:58,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:36:58,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:36:58,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:36:58,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:36:58,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:36:59,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:36:59,083 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:36:59,090 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:36:59,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:36:59,095 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:36:59,096 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1071.c [2020-09-24 22:36:59,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f251f1a9/835e6ea551124fac8f4da7861e0c4a32/FLAG0df482f33 [2020-09-24 22:36:59,768 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:36:59,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1071.c [2020-09-24 22:36:59,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f251f1a9/835e6ea551124fac8f4da7861e0c4a32/FLAG0df482f33 [2020-09-24 22:37:00,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f251f1a9/835e6ea551124fac8f4da7861e0c4a32 [2020-09-24 22:37:00,086 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:37:00,092 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:37:00,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:37:00,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:37:00,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:37:00,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:37:00" (1/1) ... [2020-09-24 22:37:00,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d574d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:00, skipping insertion in model container [2020-09-24 22:37:00,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:37:00" (1/1) ... [2020-09-24 22:37:00,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:37:00,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:37:00,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:37:00,418 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:37:00,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:37:00,477 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:37:00,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:00 WrapperNode [2020-09-24 22:37:00,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:37:00,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:37:00,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:37:00,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:37:00,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:00" (1/1) ... [2020-09-24 22:37:00,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:00" (1/1) ... [2020-09-24 22:37:00,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:00" (1/1) ... [2020-09-24 22:37:00,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:00" (1/1) ... [2020-09-24 22:37:00,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:00" (1/1) ... [2020-09-24 22:37:00,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:00" (1/1) ... [2020-09-24 22:37:00,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:00" (1/1) ... [2020-09-24 22:37:00,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:37:00,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:37:00,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:37:00,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:37:00,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:37:00,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:37:00,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:37:00,709 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-24 22:37:00,709 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-09-24 22:37:00,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:37:00,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:37:00,710 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-24 22:37:00,710 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-09-24 22:37:00,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:37:00,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 22:37:00,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:37:00,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:37:00,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:37:00,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 22:37:00,712 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:37:00,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:37:00,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:37:01,135 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:37:01,136 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-24 22:37:01,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:37:01 BoogieIcfgContainer [2020-09-24 22:37:01,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:37:01,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:37:01,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:37:01,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:37:01,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:37:00" (1/3) ... [2020-09-24 22:37:01,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dbe0f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:37:01, skipping insertion in model container [2020-09-24 22:37:01,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:00" (2/3) ... [2020-09-24 22:37:01,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dbe0f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:37:01, skipping insertion in model container [2020-09-24 22:37:01,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:37:01" (3/3) ... [2020-09-24 22:37:01,154 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1071.c [2020-09-24 22:37:01,168 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:37:01,180 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:37:01,205 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:37:01,240 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:37:01,241 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:37:01,241 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:37:01,241 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:37:01,241 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:37:01,241 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:37:01,241 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:37:01,242 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:37:01,270 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-09-24 22:37:01,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 22:37:01,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:37:01,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:37:01,283 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:37:01,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:37:01,290 INFO L82 PathProgramCache]: Analyzing trace with hash 309483918, now seen corresponding path program 1 times [2020-09-24 22:37:01,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:37:01,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707080397] [2020-09-24 22:37:01,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:37:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:01,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:01,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:01,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 22:37:01,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:01,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-24 22:37:01,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:01,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:37:01,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 22:37:01,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:37:01,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:37:01,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:37:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:01,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:01,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:01,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:37:01,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:01,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:37:01,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:01,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:37:01,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:01,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:37:01,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:37:01,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 22:37:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:01,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:01,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:01,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 22:37:01,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:01,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 22:37:01,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:01,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:37:01,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:37:01,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:37:01,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:37:01,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 22:37:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:01,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:01,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:01,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:37:01,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:01,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:37:01,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:01,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:37:01,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:37:01,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:37:01,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:37:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:37:01,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707080397] [2020-09-24 22:37:01,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:37:01,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:37:01,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763631144] [2020-09-24 22:37:01,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:37:01,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:37:01,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:37:01,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:37:01,859 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 4 states. [2020-09-24 22:37:02,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:37:02,139 INFO L93 Difference]: Finished difference Result 173 states and 197 transitions. [2020-09-24 22:37:02,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 22:37:02,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-09-24 22:37:02,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:37:02,158 INFO L225 Difference]: With dead ends: 173 [2020-09-24 22:37:02,158 INFO L226 Difference]: Without dead ends: 87 [2020-09-24 22:37:02,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:37:02,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-24 22:37:02,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-24 22:37:02,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-24 22:37:02,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2020-09-24 22:37:02,228 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 34 [2020-09-24 22:37:02,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:37:02,243 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2020-09-24 22:37:02,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:37:02,244 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2020-09-24 22:37:02,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 22:37:02,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:37:02,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:37:02,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:37:02,247 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:37:02,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:37:02,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1117903960, now seen corresponding path program 1 times [2020-09-24 22:37:02,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:37:02,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973000862] [2020-09-24 22:37:02,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:37:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 22:37:02,303 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 22:37:02,303 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:37:02,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:37:02,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:37:02 BoogieIcfgContainer [2020-09-24 22:37:02,335 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:37:02,339 INFO L168 Benchmark]: Toolchain (without parser) took 2249.78 ms. Allocated memory was 147.3 MB in the beginning and 235.9 MB in the end (delta: 88.6 MB). Free memory was 103.7 MB in the beginning and 200.8 MB in the end (delta: -97.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 22:37:02,340 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 22:37:02,341 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.42 ms. Allocated memory is still 147.3 MB. Free memory was 103.1 MB in the beginning and 92.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-09-24 22:37:02,342 INFO L168 Benchmark]: Boogie Preprocessor took 150.20 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 92.0 MB in the beginning and 180.5 MB in the end (delta: -88.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-24 22:37:02,343 INFO L168 Benchmark]: RCFGBuilder took 513.60 ms. Allocated memory is still 203.4 MB. Free memory was 180.5 MB in the beginning and 154.2 MB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-09-24 22:37:02,344 INFO L168 Benchmark]: TraceAbstraction took 1191.02 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 153.6 MB in the beginning and 200.8 MB in the end (delta: -47.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 22:37:02,348 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 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 385.42 ms. Allocated memory is still 147.3 MB. Free memory was 103.1 MB in the beginning and 92.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 150.20 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 92.0 MB in the beginning and 180.5 MB in the end (delta: -88.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 513.60 ms. Allocated memory is still 203.4 MB. Free memory was 180.5 MB in the beginning and 154.2 MB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1191.02 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 153.6 MB in the beginning and 200.8 MB in the end (delta: -47.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 74]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 29. Possible FailurePath: [L68] double x = 0.0 / 0.0; [L70] CALL, EXPR trunc_double(x) [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L70] RET, EXPR trunc_double(x) [L70] double res = trunc_double(x); [L73] CALL, EXPR isnan_double(res) [L15] return x != x; [L73] RET, EXPR isnan_double(res) [L73] COND TRUE !isnan_double(res) [L74] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 94 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 94 SDtfs, 19 SDslu, 54 SDs, 0 SdLazy, 113 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 1782 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...