/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:29:12,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:29:12,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:29:12,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:29:12,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:29:12,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:29:12,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:29:12,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:29:12,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:29:12,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:29:12,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:29:12,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:29:12,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:29:12,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:29:12,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:29:12,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:29:12,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:29:12,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:29:12,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:29:12,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:29:12,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:29:12,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:29:12,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:29:12,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:29:12,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:29:12,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:29:12,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:29:12,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:29:12,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:29:12,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:29:12,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:29:12,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:29:12,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:29:12,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:29:12,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:29:12,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:29:12,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:29:12,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:29:12,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:29:12,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:29:12,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:29:12,875 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 [2020-08-21 16:29:12,900 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:29:12,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:29:12,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:29:12,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:29:12,902 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:29:12,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:29:12,902 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:29:12,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:29:12,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:29:12,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:29:12,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:29:12,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:29:12,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:29:12,904 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:29:12,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:29:12,904 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:29:12,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:29:12,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:29:12,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:29:12,905 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:29:12,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:29:12,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:29:12,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:29:12,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:29:12,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:29:12,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:29:12,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:29:12,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:29:12,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:29:12,907 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:29:13,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:29:13,234 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:29:13,237 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:29:13,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:29:13,239 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:29:13,240 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-21 16:29:13,296 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee359f8e8/aed45a0913f049c8b68a9993a7187e0f/FLAG4a48e2f0c [2020-08-21 16:29:13,819 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:29:13,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-21 16:29:13,830 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee359f8e8/aed45a0913f049c8b68a9993a7187e0f/FLAG4a48e2f0c [2020-08-21 16:29:14,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee359f8e8/aed45a0913f049c8b68a9993a7187e0f [2020-08-21 16:29:14,159 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:29:14,161 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:29:14,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:29:14,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:29:14,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:29:14,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a304747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14, skipping insertion in model container [2020-08-21 16:29:14,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:29:14,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:29:14,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:29:14,483 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:29:14,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:29:14,640 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:29:14,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14 WrapperNode [2020-08-21 16:29:14,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:29:14,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:29:14,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:29:14,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:29:14,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (1/1) ... [2020-08-21 16:29:14,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:29:14,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:29:14,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:29:14,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:29:14,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (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 [2020-08-21 16:29:14,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:29:14,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:29:14,777 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-21 16:29:14,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-21 16:29:14,777 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:29:14,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:29:14,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-21 16:29:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-21 16:29:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:29:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 16:29:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:29:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:29:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 16:29:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:29:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-21 16:29:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:29:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:29:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-21 16:29:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:29:15,427 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:29:15,427 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-21 16:29:15,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:29:15 BoogieIcfgContainer [2020-08-21 16:29:15,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:29:15,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:29:15,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:29:15,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:29:15,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:29:14" (1/3) ... [2020-08-21 16:29:15,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751d1218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:29:15, skipping insertion in model container [2020-08-21 16:29:15,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:14" (2/3) ... [2020-08-21 16:29:15,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751d1218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:29:15, skipping insertion in model container [2020-08-21 16:29:15,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:29:15" (3/3) ... [2020-08-21 16:29:15,442 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-08-21 16:29:15,453 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:29:15,461 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:29:15,475 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:29:15,498 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:29:15,498 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:29:15,498 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:29:15,498 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:29:15,499 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:29:15,499 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:29:15,499 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:29:15,499 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:29:15,517 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-21 16:29:15,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 16:29:15,524 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:29:15,525 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] [2020-08-21 16:29:15,525 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:29:15,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:29:15,531 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-08-21 16:29:15,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:29:15,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85043091] [2020-08-21 16:29:15,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:29:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:15,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:15,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:29:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:15,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 16:29:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:15,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:29:15,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85043091] [2020-08-21 16:29:15,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:29:15,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:29:15,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990598608] [2020-08-21 16:29:15,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:29:15,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:29:15,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:29:15,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:29:15,812 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-21 16:29:16,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:29:16,201 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-21 16:29:16,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 16:29:16,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-21 16:29:16,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:29:16,215 INFO L225 Difference]: With dead ends: 138 [2020-08-21 16:29:16,215 INFO L226 Difference]: Without dead ends: 68 [2020-08-21 16:29:16,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:29:16,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-21 16:29:16,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-21 16:29:16,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-21 16:29:16,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-21 16:29:16,272 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-21 16:29:16,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:29:16,272 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-21 16:29:16,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:29:16,273 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-21 16:29:16,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 16:29:16,274 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:29:16,274 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] [2020-08-21 16:29:16,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:29:16,275 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:29:16,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:29:16,276 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-08-21 16:29:16,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:29:16,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93009036] [2020-08-21 16:29:16,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:29:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 16:29:16,425 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 16:29:16,425 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:29:16,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:29:16,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:29:16 BoogieIcfgContainer [2020-08-21 16:29:16,449 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:29:16,462 INFO L168 Benchmark]: Toolchain (without parser) took 2290.77 ms. Allocated memory was 140.5 MB in the beginning and 236.5 MB in the end (delta: 95.9 MB). Free memory was 103.6 MB in the beginning and 192.4 MB in the end (delta: -88.8 MB). Peak memory consumption was 7.2 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:16,467 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-21 16:29:16,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 480.40 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.4 MB in the beginning and 177.9 MB in the end (delta: -74.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:16,469 INFO L168 Benchmark]: Boogie Preprocessor took 63.63 ms. Allocated memory is still 202.9 MB. Free memory was 177.9 MB in the beginning and 175.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:16,470 INFO L168 Benchmark]: RCFGBuilder took 723.55 ms. Allocated memory is still 202.9 MB. Free memory was 175.2 MB in the beginning and 139.3 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:16,471 INFO L168 Benchmark]: TraceAbstraction took 1015.46 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 138.6 MB in the beginning and 192.4 MB in the end (delta: -53.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 16:29:16,475 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 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 480.40 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.4 MB in the beginning and 177.9 MB in the end (delta: -74.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.63 ms. Allocated memory is still 202.9 MB. Free memory was 177.9 MB in the beginning and 175.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 723.55 ms. Allocated memory is still 202.9 MB. Free memory was 175.2 MB in the beginning and 139.3 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1015.46 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 138.6 MB in the beginning and 192.4 MB in the end (delta: -53.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) [L161] __int32_t hx; [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L180] RET isfinite_double(x) [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); [L182] RET, EXPR fmod_double(x, y) [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x [L186] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...