/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=NARROWEST --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-c90d42b [2020-09-25 01:59:41,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:59:41,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:59:41,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:59:41,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:59:41,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:59:41,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:59:41,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:59:41,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:59:41,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:59:41,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:59:41,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:59:41,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:59:41,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:59:41,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:59:41,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:59:41,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:59:41,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:59:41,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:59:41,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:59:41,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:59:41,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:59:41,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:59:41,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:59:41,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:59:41,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:59:41,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:59:41,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:59:41,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:59:41,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:59:41,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:59:41,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:59:41,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:59:41,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:59:41,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:59:41,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:59:41,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:59:41,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:59:41,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:59:41,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:59:41,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:59:41,900 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 [2020-09-25 01:59:41,946 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:59:41,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:59:41,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:59:41,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:59:41,949 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:59:41,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:59:41,950 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:59:41,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:59:41,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:59:41,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:59:41,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:59:41,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:59:41,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:59:41,952 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:59:41,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:59:41,953 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:59:41,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:59:41,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:59:41,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:59:41,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:59:41,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:59:41,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:59:41,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:59:41,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:59:41,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:59:41,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:59:41,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:59:41,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:59:41,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:59:41,955 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 01:59:42,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:59:42,471 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:59:42,478 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:59:42,481 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:59:42,481 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:59:42,483 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-09-25 01:59:42,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a2604f97/fbfb1fc7611b42959d866b57315fa4a5/FLAG976c2c931 [2020-09-25 01:59:43,164 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:59:43,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-09-25 01:59:43,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a2604f97/fbfb1fc7611b42959d866b57315fa4a5/FLAG976c2c931 [2020-09-25 01:59:43,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a2604f97/fbfb1fc7611b42959d866b57315fa4a5 [2020-09-25 01:59:43,484 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:59:43,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:59:43,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:59:43,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:59:43,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:59:43,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:59:43" (1/1) ... [2020-09-25 01:59:43,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@823e3a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:43, skipping insertion in model container [2020-09-25 01:59:43,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:59:43" (1/1) ... [2020-09-25 01:59:43,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:59:43,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:59:43,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:59:43,880 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:59:44,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:59:44,059 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:59:44,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44 WrapperNode [2020-09-25 01:59:44,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:59:44,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:59:44,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:59:44,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:59:44,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:44,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:44,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:44,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:44,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:44,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:44,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:44,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:59:44,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:59:44,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:59:44,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:59:44,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (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 [2020-09-25 01:59:44,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:59:44,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:59:44,215 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-25 01:59:44,215 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-09-25 01:59:44,215 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:59:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:59:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-25 01:59:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-25 01:59:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:59:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 01:59:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:59:44,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:59:44,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 01:59:44,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:59:44,217 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-09-25 01:59:44,217 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:59:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:59:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-25 01:59:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:59:45,013 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:59:45,013 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-25 01:59:45,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:59:45 BoogieIcfgContainer [2020-09-25 01:59:45,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:59:45,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:59:45,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:59:45,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:59:45,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:59:43" (1/3) ... [2020-09-25 01:59:45,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae7c927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:59:45, skipping insertion in model container [2020-09-25 01:59:45,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (2/3) ... [2020-09-25 01:59:45,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae7c927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:59:45, skipping insertion in model container [2020-09-25 01:59:45,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:59:45" (3/3) ... [2020-09-25 01:59:45,037 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-09-25 01:59:45,049 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:59:45,061 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:59:45,085 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:59:45,122 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:59:45,122 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:59:45,122 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:59:45,122 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:59:45,123 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:59:45,123 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:59:45,123 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:59:45,123 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:59:45,153 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2020-09-25 01:59:45,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 01:59:45,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:45,167 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] [2020-09-25 01:59:45,167 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:45,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:45,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1577177176, now seen corresponding path program 1 times [2020-09-25 01:59:45,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:45,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29208584] [2020-09-25 01:59:45,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:45,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:45,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:45,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:45,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:45,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 01:59:45,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:59:45,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-09-25 01:59:45,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:45,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:45,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 01:59:45,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:45,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:59:45,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:45,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:45,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:45,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 01:59:45,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:45,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 01:59:45,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:45,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:45,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:45,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-25 01:59:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:45,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:45,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:45,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:45,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:59:45,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:59:45,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 01:59:45,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 01:59:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:45,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:45,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 01:59:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:45,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:45,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:45,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:45,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 01:59:45,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:59:45,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:59:45,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:45,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:45,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 01:59:45,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:45,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:45,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:59:45,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29208584] [2020-09-25 01:59:45,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:45,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:59:45,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154176236] [2020-09-25 01:59:46,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:59:46,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:46,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:59:46,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:59:46,027 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2020-09-25 01:59:46,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:46,789 INFO L93 Difference]: Finished difference Result 414 states and 503 transitions. [2020-09-25 01:59:46,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:59:46,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-25 01:59:46,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:46,817 INFO L225 Difference]: With dead ends: 414 [2020-09-25 01:59:46,818 INFO L226 Difference]: Without dead ends: 209 [2020-09-25 01:59:46,829 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 [2020-09-25 01:59:46,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-25 01:59:46,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-09-25 01:59:46,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-09-25 01:59:46,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 235 transitions. [2020-09-25 01:59:46,931 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 235 transitions. Word has length 51 [2020-09-25 01:59:46,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:46,936 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 235 transitions. [2020-09-25 01:59:46,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:59:46,937 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 235 transitions. [2020-09-25 01:59:46,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 01:59:46,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:46,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:59:46,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:59:46,944 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:46,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:46,945 INFO L82 PathProgramCache]: Analyzing trace with hash -16125544, now seen corresponding path program 1 times [2020-09-25 01:59:46,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:46,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038950449] [2020-09-25 01:59:46,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 01:59:47,088 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 01:59:47,095 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 01:59:47,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:59:47,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:59:47 BoogieIcfgContainer [2020-09-25 01:59:47,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:59:47,168 INFO L168 Benchmark]: Toolchain (without parser) took 3679.70 ms. Allocated memory was 140.5 MB in the beginning and 234.9 MB in the end (delta: 94.4 MB). Free memory was 103.6 MB in the beginning and 119.2 MB in the end (delta: -15.6 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:47,170 INFO L168 Benchmark]: CDTParser took 0.33 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 01:59:47,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 570.82 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 179.2 MB in the end (delta: -76.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:47,173 INFO L168 Benchmark]: Boogie Preprocessor took 72.65 ms. Allocated memory is still 203.9 MB. Free memory was 179.2 MB in the beginning and 176.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:47,174 INFO L168 Benchmark]: RCFGBuilder took 889.60 ms. Allocated memory is still 203.9 MB. Free memory was 176.2 MB in the beginning and 129.7 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:47,176 INFO L168 Benchmark]: TraceAbstraction took 2136.08 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 129.1 MB in the beginning and 119.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:47,186 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 570.82 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 179.2 MB in the end (delta: -76.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.65 ms. Allocated memory is still 203.9 MB. Free memory was 179.2 MB in the beginning and 176.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 889.60 ms. Allocated memory is still 203.9 MB. Free memory was 176.2 MB in the beginning and 129.7 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2136.08 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 129.1 MB in the beginning and 119.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 40.8 MB. 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 38, 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, 216 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 239 SDtfs, 37 SDslu, 182 SDs, 0 SdLazy, 260 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s 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=216occurred 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, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 4750 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...