/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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:54:07,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:54:07,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:54:07,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:54:07,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:54:07,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:54:07,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:54:07,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:54:07,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:54:07,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:54:07,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:54:07,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:54:07,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:54:07,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:54:07,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:54:07,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:54:07,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:54:07,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:54:07,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:54:07,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:54:07,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:54:07,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:54:07,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:54:07,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:54:07,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:54:07,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:54:07,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:54:07,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:54:07,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:54:07,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:54:07,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:54:07,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:54:07,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:54:07,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:54:07,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:54:07,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:54:07,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:54:07,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:54:07,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:54:07,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:54:07,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:54:07,206 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 18:54:07,230 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:54:07,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:54:07,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:54:07,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:54:07,232 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:54:07,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:54:07,232 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:54:07,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:54:07,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:54:07,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:54:07,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:54:07,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:54:07,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:54:07,234 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:54:07,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:54:07,234 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:54:07,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:54:07,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:54:07,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:54:07,235 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:54:07,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:54:07,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:54:07,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:54:07,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:54:07,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:54:07,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:54:07,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:54:07,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:54:07,237 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:54:07,237 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=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 18:54:07,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:54:07,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:54:07,581 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:54:07,582 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:54:07,584 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:54:07,585 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-21 18:54:07,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac06f81ff/63b5b67f2a78454ea75625856f4657fa/FLAGd4123630f [2020-08-21 18:54:08,128 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:54:08,128 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-21 18:54:08,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac06f81ff/63b5b67f2a78454ea75625856f4657fa/FLAGd4123630f [2020-08-21 18:54:08,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac06f81ff/63b5b67f2a78454ea75625856f4657fa [2020-08-21 18:54:08,459 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:54:08,460 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:54:08,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:54:08,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:54:08,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:54:08,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:54:08" (1/1) ... [2020-08-21 18:54:08,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43be0364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08, skipping insertion in model container [2020-08-21 18:54:08,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:54:08" (1/1) ... [2020-08-21 18:54:08,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:54:08,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:54:08,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:54:08,734 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:54:08,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:54:08,894 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:54:08,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08 WrapperNode [2020-08-21 18:54:08,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:54:08,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:54:08,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:54:08,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:54:08,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08" (1/1) ... [2020-08-21 18:54:08,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08" (1/1) ... [2020-08-21 18:54:08,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08" (1/1) ... [2020-08-21 18:54:08,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08" (1/1) ... [2020-08-21 18:54:08,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08" (1/1) ... [2020-08-21 18:54:08,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08" (1/1) ... [2020-08-21 18:54:08,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08" (1/1) ... [2020-08-21 18:54:08,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:54:08,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:54:08,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:54:08,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:54:08,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08" (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 18:54:09,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:54:09,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:54:09,017 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 18:54:09,017 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-21 18:54:09,017 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-21 18:54:09,017 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:54:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:54:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-21 18:54:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 18:54:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-21 18:54:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:54:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 18:54:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:54:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:54:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 18:54:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:54:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-21 18:54:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:54:09,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:54:09,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-21 18:54:09,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:54:09,583 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:54:09,583 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-21 18:54:09,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:54:09 BoogieIcfgContainer [2020-08-21 18:54:09,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:54:09,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:54:09,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:54:09,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:54:09,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:54:08" (1/3) ... [2020-08-21 18:54:09,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561b42c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:54:09, skipping insertion in model container [2020-08-21 18:54:09,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:54:08" (2/3) ... [2020-08-21 18:54:09,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561b42c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:54:09, skipping insertion in model container [2020-08-21 18:54:09,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:54:09" (3/3) ... [2020-08-21 18:54:09,597 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-08-21 18:54:09,612 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:54:09,620 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:54:09,637 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:54:09,665 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:54:09,665 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:54:09,666 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:54:09,666 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:54:09,666 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:54:09,667 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:54:09,667 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:54:09,667 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:54:09,689 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-21 18:54:09,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 18:54:09,697 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:54:09,698 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 18:54:09,699 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:54:09,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:54:09,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-08-21 18:54:09,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:54:09,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867761752] [2020-08-21 18:54:09,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:54:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:09,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:54:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:09,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:54:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:09,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:54:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:54:09,989 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 18:54:09,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867761752] [2020-08-21 18:54:09,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:54:09,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:54:09,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193284848] [2020-08-21 18:54:10,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:54:10,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:54:10,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:54:10,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:54:10,042 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-21 18:54:10,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:54:10,350 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-21 18:54:10,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:54:10,352 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-21 18:54:10,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:54:10,364 INFO L225 Difference]: With dead ends: 138 [2020-08-21 18:54:10,365 INFO L226 Difference]: Without dead ends: 68 [2020-08-21 18:54:10,369 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 18:54:10,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-21 18:54:10,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-21 18:54:10,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-21 18:54:10,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-21 18:54:10,423 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-21 18:54:10,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:54:10,423 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-21 18:54:10,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:54:10,424 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-21 18:54:10,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 18:54:10,425 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:54:10,425 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 18:54:10,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:54:10,426 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:54:10,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:54:10,427 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-08-21 18:54:10,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:54:10,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313142172] [2020-08-21 18:54:10,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:54:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:54:10,600 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:54:10,600 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:54:10,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:54:10,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:54:10 BoogieIcfgContainer [2020-08-21 18:54:10,626 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:54:10,629 INFO L168 Benchmark]: Toolchain (without parser) took 2167.88 ms. Allocated memory was 135.8 MB in the beginning and 224.9 MB in the end (delta: 89.1 MB). Free memory was 98.0 MB in the beginning and 187.4 MB in the end (delta: -89.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 18:54:10,630 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 135.8 MB. Free memory was 117.3 MB in the beginning and 117.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 18:54:10,631 INFO L168 Benchmark]: CACSL2BoogieTranslator took 433.48 ms. Allocated memory was 135.8 MB in the beginning and 198.7 MB in the end (delta: 62.9 MB). Free memory was 97.8 MB in the beginning and 173.4 MB in the end (delta: -75.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:10,632 INFO L168 Benchmark]: Boogie Preprocessor took 63.03 ms. Allocated memory is still 198.7 MB. Free memory was 173.4 MB in the beginning and 171.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:10,633 INFO L168 Benchmark]: RCFGBuilder took 630.19 ms. Allocated memory is still 198.7 MB. Free memory was 170.6 MB in the beginning and 134.4 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2020-08-21 18:54:10,634 INFO L168 Benchmark]: TraceAbstraction took 1036.31 ms. Allocated memory was 198.7 MB in the beginning and 224.9 MB in the end (delta: 26.2 MB). Free memory was 133.7 MB in the beginning and 187.4 MB in the end (delta: -53.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 18:54:10,638 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 135.8 MB. Free memory was 117.3 MB in the beginning and 117.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 433.48 ms. Allocated memory was 135.8 MB in the beginning and 198.7 MB in the end (delta: 62.9 MB). Free memory was 97.8 MB in the beginning and 173.4 MB in the end (delta: -75.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.03 ms. Allocated memory is still 198.7 MB. Free memory was 173.4 MB in the beginning and 171.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 630.19 ms. Allocated memory is still 198.7 MB. Free memory was 170.6 MB in the beginning and 134.4 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1036.31 ms. Allocated memory was 198.7 MB in the beginning and 224.9 MB in the end (delta: 26.2 MB). Free memory was 133.7 MB in the beginning and 187.4 MB in the end (delta: -53.7 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: 0.9s, 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, 0.0s 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...