/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:22:13,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:22:13,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:22:13,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:22:13,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:22:13,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:22:13,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:22:13,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:22:13,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:22:13,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:22:13,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:22:13,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:22:13,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:22:13,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:22:13,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:22:13,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:22:13,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:22:13,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:22:13,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:22:13,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:22:13,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:22:13,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:22:13,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:22:13,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:22:13,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:22:13,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:22:13,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:22:13,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:22:13,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:22:13,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:22:13,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:22:13,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:22:13,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:22:13,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:22:13,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:22:13,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:22:13,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:22:13,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:22:13,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:22:13,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:22:13,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:22:13,615 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 01:22:13,637 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:22:13,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:22:13,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:22:13,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:22:13,639 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:22:13,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:22:13,640 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:22:13,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:22:13,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:22:13,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:22:13,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:22:13,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:22:13,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:22:13,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:22:13,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:22:13,642 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:22:13,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:22:13,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:22:13,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:22:13,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:22:13,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:22:13,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:22:13,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:22:13,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:22:13,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:22:13,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:22:13,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:22:13,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:22:13,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:22:13,645 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:22:13,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:22:14,005 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:22:14,009 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:22:14,011 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:22:14,012 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:22:14,013 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-22 01:22:14,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c77d76bd1/f14cd796f7c644ed88596f4772aff5d0/FLAG5280961af [2020-08-22 01:22:14,559 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:22:14,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-22 01:22:14,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c77d76bd1/f14cd796f7c644ed88596f4772aff5d0/FLAG5280961af [2020-08-22 01:22:14,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c77d76bd1/f14cd796f7c644ed88596f4772aff5d0 [2020-08-22 01:22:14,951 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:22:14,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:22:14,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:22:14,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:22:14,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:22:14,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:22:14" (1/1) ... [2020-08-22 01:22:14,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17f1cfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:14, skipping insertion in model container [2020-08-22 01:22:14,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:22:14" (1/1) ... [2020-08-22 01:22:14,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:22:15,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:22:15,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:22:15,247 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:22:15,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:22:15,409 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:22:15,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:15 WrapperNode [2020-08-22 01:22:15,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:22:15,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:22:15,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:22:15,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:22:15,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:15" (1/1) ... [2020-08-22 01:22:15,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:15" (1/1) ... [2020-08-22 01:22:15,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:15" (1/1) ... [2020-08-22 01:22:15,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:15" (1/1) ... [2020-08-22 01:22:15,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:15" (1/1) ... [2020-08-22 01:22:15,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:15" (1/1) ... [2020-08-22 01:22:15,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:15" (1/1) ... [2020-08-22 01:22:15,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:22:15,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:22:15,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:22:15,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:22:15,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:22:15,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:22:15,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:22:15,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 01:22:15,560 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-22 01:22:15,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-22 01:22:15,560 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:22:15,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:22:15,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-22 01:22:15,561 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 01:22:15,561 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-22 01:22:15,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:22:15,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 01:22:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:22:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:22:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 01:22:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:22:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-22 01:22:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:22:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:22:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 01:22:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:22:16,447 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:22:16,448 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-22 01:22:16,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:22:16 BoogieIcfgContainer [2020-08-22 01:22:16,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:22:16,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:22:16,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:22:16,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:22:16,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:22:14" (1/3) ... [2020-08-22 01:22:16,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ca1205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:22:16, skipping insertion in model container [2020-08-22 01:22:16,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:15" (2/3) ... [2020-08-22 01:22:16,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ca1205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:22:16, skipping insertion in model container [2020-08-22 01:22:16,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:22:16" (3/3) ... [2020-08-22 01:22:16,462 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-08-22 01:22:16,472 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:22:16,481 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:22:16,495 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:22:16,517 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:22:16,518 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:22:16,518 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:22:16,518 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:22:16,518 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:22:16,518 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:22:16,519 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:22:16,519 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:22:16,538 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-22 01:22:16,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 01:22:16,546 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:22:16,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:22:16,547 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:22:16,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:22:16,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-08-22 01:22:16,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:22:16,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047434650] [2020-08-22 01:22:16,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:22:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:16,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:22:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:16,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:22:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:16,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:22:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:16,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:22:16,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047434650] [2020-08-22 01:22:16,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:22:16,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:22:16,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027123770] [2020-08-22 01:22:16,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:22:16,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:22:16,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:22:16,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:22:16,885 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-22 01:22:17,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:22:17,216 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-22 01:22:17,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 01:22:17,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-22 01:22:17,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:22:17,228 INFO L225 Difference]: With dead ends: 138 [2020-08-22 01:22:17,228 INFO L226 Difference]: Without dead ends: 68 [2020-08-22 01:22:17,232 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 [2020-08-22 01:22:17,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-22 01:22:17,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-22 01:22:17,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-22 01:22:17,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-22 01:22:17,294 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-22 01:22:17,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:22:17,295 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-22 01:22:17,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:22:17,295 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-22 01:22:17,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 01:22:17,296 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:22:17,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:22:17,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:22:17,297 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:22:17,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:22:17,297 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-08-22 01:22:17,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:22:17,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873806565] [2020-08-22 01:22:17,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:22:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 01:22:17,401 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 01:22:17,401 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 01:22:17,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:22:17,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 01:22:17 BoogieIcfgContainer [2020-08-22 01:22:17,480 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 01:22:17,489 INFO L168 Benchmark]: Toolchain (without parser) took 2529.26 ms. Allocated memory was 137.9 MB in the beginning and 231.2 MB in the end (delta: 93.3 MB). Free memory was 100.0 MB in the beginning and 191.3 MB in the end (delta: -91.3 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:17,490 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 01:22:17,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.19 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 99.8 MB in the beginning and 175.8 MB in the end (delta: -75.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:17,495 INFO L168 Benchmark]: Boogie Preprocessor took 88.12 ms. Allocated memory is still 200.8 MB. Free memory was 175.8 MB in the beginning and 173.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:17,496 INFO L168 Benchmark]: RCFGBuilder took 954.40 ms. Allocated memory is still 200.8 MB. Free memory was 173.0 MB in the beginning and 136.9 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:17,497 INFO L168 Benchmark]: TraceAbstraction took 1025.89 ms. Allocated memory was 200.8 MB in the beginning and 231.2 MB in the end (delta: 30.4 MB). Free memory was 136.3 MB in the beginning and 191.3 MB in the end (delta: -55.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 01:22:17,508 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 453.19 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 99.8 MB in the beginning and 175.8 MB in the end (delta: -75.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.12 ms. Allocated memory is still 200.8 MB. Free memory was 175.8 MB in the beginning and 173.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 954.40 ms. Allocated memory is still 200.8 MB. Free memory was 173.0 MB in the beginning and 136.9 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1025.89 ms. Allocated memory was 200.8 MB in the beginning and 231.2 MB in the end (delta: 30.4 MB). Free memory was 136.3 MB in the beginning and 191.3 MB in the end (delta: -55.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) [L164] __int32_t hx; [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L183] RET isfinite_double(x) [L183] COND TRUE isfinite_double(x) [L185] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L185] RET, EXPR fmod_double(x, y) [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x [L189] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...