/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=LOWLEXORDER --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_1072a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:30:11,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:30:11,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:30:11,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:30:11,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:30:11,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:30:11,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:30:11,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:30:11,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:30:11,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:30:11,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:30:11,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:30:11,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:30:11,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:30:11,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:30:11,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:30:11,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:30:11,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:30:11,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:30:11,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:30:11,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:30:11,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:30:11,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:30:11,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:30:11,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:30:11,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:30:11,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:30:11,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:30:11,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:30:11,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:30:11,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:30:11,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:30:11,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:30:11,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:30:11,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:30:11,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:30:11,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:30:11,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:30:11,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:30:11,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:30:11,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:30:11,548 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 21:30:11,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:30:11,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:30:11,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:30:11,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:30:11,598 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:30:11,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:30:11,599 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:30:11,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:30:11,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:30:11,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:30:11,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:30:11,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:30:11,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:30:11,602 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:30:11,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:30:11,602 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:30:11,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:30:11,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:30:11,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:30:11,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:30:11,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:30:11,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:30:11,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:30:11,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:30:11,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:30:11,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:30:11,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:30:11,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:30:11,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:30:11,605 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:30:12,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:30:12,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:30:12,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:30:12,152 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:30:12,153 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:30:12,154 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072a.c [2020-09-24 21:30:12,234 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20547eef3/fc0f23cd407743619c9cd3ed52aa2826/FLAGbce01d330 [2020-09-24 21:30:12,810 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:30:12,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1072a.c [2020-09-24 21:30:12,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20547eef3/fc0f23cd407743619c9cd3ed52aa2826/FLAGbce01d330 [2020-09-24 21:30:13,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20547eef3/fc0f23cd407743619c9cd3ed52aa2826 [2020-09-24 21:30:13,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:30:13,191 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:30:13,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:30:13,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:30:13,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:30:13,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:13" (1/1) ... [2020-09-24 21:30:13,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20a9c366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:13, skipping insertion in model container [2020-09-24 21:30:13,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:13" (1/1) ... [2020-09-24 21:30:13,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:30:13,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:30:13,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:30:13,520 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:30:13,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:30:13,676 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:30:13,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:13 WrapperNode [2020-09-24 21:30:13,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:30:13,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:30:13,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:30:13,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:30:13,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:13" (1/1) ... [2020-09-24 21:30:13,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:13" (1/1) ... [2020-09-24 21:30:13,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:13" (1/1) ... [2020-09-24 21:30:13,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:13" (1/1) ... [2020-09-24 21:30:13,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:13" (1/1) ... [2020-09-24 21:30:13,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:13" (1/1) ... [2020-09-24 21:30:13,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:13" (1/1) ... [2020-09-24 21:30:13,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:30:13,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:30:13,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:30:13,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:30:13,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:13" (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 21:30:13,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:30:13,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:30:13,823 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-24 21:30:13,823 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-09-24 21:30:13,824 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-09-24 21:30:13,824 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:30:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:30:13,824 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-24 21:30:13,825 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-09-24 21:30:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:30:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 21:30:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:30:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:30:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:30:13,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 21:30:13,828 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-09-24 21:30:13,828 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:30:13,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:30:13,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:30:14,374 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:30:14,375 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-09-24 21:30:14,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:14 BoogieIcfgContainer [2020-09-24 21:30:14,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:30:14,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:30:14,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:30:14,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:30:14,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:30:13" (1/3) ... [2020-09-24 21:30:14,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f91c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:14, skipping insertion in model container [2020-09-24 21:30:14,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:13" (2/3) ... [2020-09-24 21:30:14,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f91c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:14, skipping insertion in model container [2020-09-24 21:30:14,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:14" (3/3) ... [2020-09-24 21:30:14,393 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2020-09-24 21:30:14,406 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:30:14,421 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:30:14,446 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:30:14,495 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:30:14,496 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:30:14,496 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:30:14,496 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:30:14,496 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:30:14,496 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:30:14,497 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:30:14,497 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:30:14,525 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2020-09-24 21:30:14,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 21:30:14,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:14,538 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] [2020-09-24 21:30:14,538 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:14,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:14,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1396348261, now seen corresponding path program 1 times [2020-09-24 21:30:14,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:14,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734505881] [2020-09-24 21:30:14,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:14,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:14,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:14,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:15,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:15,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 21:30:15,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:30:15,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-09-24 21:30:15,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:15,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:15,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 21:30:15,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:15,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:30:15,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:15,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:15,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:15,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:30:15,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:15,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 21:30:15,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:15,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:15,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:15,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:15,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:15,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 21:30:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:15,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:15,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:15,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:15,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:30:15,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:30:15,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 21:30:15,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:15,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:15,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:30:15,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:15,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:15,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 21:30:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:15,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:15,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:15,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:15,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 21:30:15,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:30:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 21:30:15,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 21:30:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:15,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:15,384 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 21:30:15,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734505881] [2020-09-24 21:30:15,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:15,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:30:15,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537137713] [2020-09-24 21:30:15,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:30:15,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:15,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:30:15,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:30:15,422 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 4 states. [2020-09-24 21:30:15,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:15,876 INFO L93 Difference]: Finished difference Result 213 states and 242 transitions. [2020-09-24 21:30:15,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 21:30:15,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-09-24 21:30:15,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:15,899 INFO L225 Difference]: With dead ends: 213 [2020-09-24 21:30:15,900 INFO L226 Difference]: Without dead ends: 107 [2020-09-24 21:30:15,908 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 [2020-09-24 21:30:15,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-24 21:30:15,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-09-24 21:30:15,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-24 21:30:16,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 110 transitions. [2020-09-24 21:30:16,011 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 110 transitions. Word has length 40 [2020-09-24 21:30:16,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:16,012 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 110 transitions. [2020-09-24 21:30:16,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:30:16,013 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 110 transitions. [2020-09-24 21:30:16,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-24 21:30:16,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:16,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:30:16,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:30:16,018 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:16,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:16,019 INFO L82 PathProgramCache]: Analyzing trace with hash -247930506, now seen corresponding path program 1 times [2020-09-24 21:30:16,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:16,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164493409] [2020-09-24 21:30:16,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:30:16,155 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:30:16,156 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:30:16,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:30:16,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:30:16 BoogieIcfgContainer [2020-09-24 21:30:16,186 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:30:16,190 INFO L168 Benchmark]: Toolchain (without parser) took 3002.00 ms. Allocated memory was 137.4 MB in the beginning and 229.6 MB in the end (delta: 92.3 MB). Free memory was 99.4 MB in the beginning and 171.7 MB in the end (delta: -72.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:16,191 INFO L168 Benchmark]: CDTParser took 0.24 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. [2020-09-24 21:30:16,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.17 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 98.8 MB in the beginning and 177.5 MB in the end (delta: -78.7 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:16,193 INFO L168 Benchmark]: Boogie Preprocessor took 58.27 ms. Allocated memory is still 200.8 MB. Free memory was 177.5 MB in the beginning and 175.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:16,194 INFO L168 Benchmark]: RCFGBuilder took 647.02 ms. Allocated memory is still 200.8 MB. Free memory was 175.4 MB in the beginning and 145.0 MB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:16,195 INFO L168 Benchmark]: TraceAbstraction took 1801.84 ms. Allocated memory was 200.8 MB in the beginning and 229.6 MB in the end (delta: 28.8 MB). Free memory was 145.0 MB in the beginning and 171.7 MB in the end (delta: -26.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:16,199 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 485.17 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 98.8 MB in the beginning and 177.5 MB in the end (delta: -78.7 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.27 ms. Allocated memory is still 200.8 MB. Free memory was 177.5 MB in the beginning and 175.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 647.02 ms. Allocated memory is still 200.8 MB. Free memory was 175.4 MB in the beginning and 145.0 MB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1801.84 ms. Allocated memory was 200.8 MB in the beginning and 229.6 MB in the end (delta: 28.8 MB). Free memory was 145.0 MB in the beginning and 171.7 MB in the end (delta: -26.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 89]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 74, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 71. Possible FailurePath: [L84] double x = 1.0 / 0.0; [L85] 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; [L85] RET, EXPR trunc_double(x) [L85] double res = trunc_double(x); [L88] CALL, EXPR isinf_double(res) [L64] __int32_t hx, lx; [L66] ieee_double_shape_type ew_u; [L67] ew_u.value = (x) [L68] EXPR ew_u.parts.msw [L68] (hx) = ew_u.parts.msw [L69] EXPR ew_u.parts.lsw [L69] (lx) = ew_u.parts.lsw [L71] hx &= 0x7fffffff [L72] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L73] hx = 0x7ff00000 - hx [L74] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L88] RET, EXPR isinf_double(res) [L88] COND TRUE !isinf_double(res) [L89] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 118 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 19 SDslu, 69 SDs, 0 SdLazy, 139 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred 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, 0.6s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 2808 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...