/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1122b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:27:05,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:27:05,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:27:05,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:27:05,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:27:05,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:27:05,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:27:05,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:27:05,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:27:05,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:27:05,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:27:05,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:27:05,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:27:05,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:27:05,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:27:05,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:27:05,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:27:05,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:27:05,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:27:05,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:27:05,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:27:05,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:27:05,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:27:05,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:27:05,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:27:05,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:27:05,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:27:05,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:27:05,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:27:05,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:27:05,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:27:05,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:27:05,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:27:05,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:27:05,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:27:05,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:27:05,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:27:05,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:27:05,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:27:05,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:27:05,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:27:05,463 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 [2020-10-28 14:27:05,510 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:27:05,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:27:05,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:27:05,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:27:05,515 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:27:05,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:27:05,516 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:27:05,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:27:05,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:27:05,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:27:05,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:27:05,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:27:05,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:27:05,518 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:27:05,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:27:05,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:27:05,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:27:05,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:27:05,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:27:05,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:27:05,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:27:05,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:27:05,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:27:05,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:27:05,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:27:05,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:27:05,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:27:05,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:27:05,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:27:05,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:27:05,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:27:05,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:27:05,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:27:05,929 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:27:05,930 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:27:05,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1122b.c [2020-10-28 14:27:06,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3c9e7a31/0e2d5d2a62c644d29832b3cf95f46de1/FLAG8a4fb6543 [2020-10-28 14:27:06,602 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:27:06,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1122b.c [2020-10-28 14:27:06,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3c9e7a31/0e2d5d2a62c644d29832b3cf95f46de1/FLAG8a4fb6543 [2020-10-28 14:27:06,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3c9e7a31/0e2d5d2a62c644d29832b3cf95f46de1 [2020-10-28 14:27:06,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:27:06,967 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:27:06,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:27:06,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:27:06,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:27:06,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:27:06" (1/1) ... [2020-10-28 14:27:06,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@328f5a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:06, skipping insertion in model container [2020-10-28 14:27:06,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:27:06" (1/1) ... [2020-10-28 14:27:06,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:27:07,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:27:07,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:27:07,257 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:27:07,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:27:07,361 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:27:07,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:07 WrapperNode [2020-10-28 14:27:07,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:27:07,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:27:07,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:27:07,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:27:07,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:07" (1/1) ... [2020-10-28 14:27:07,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:07" (1/1) ... [2020-10-28 14:27:07,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:07" (1/1) ... [2020-10-28 14:27:07,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:07" (1/1) ... [2020-10-28 14:27:07,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:07" (1/1) ... [2020-10-28 14:27:07,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:07" (1/1) ... [2020-10-28 14:27:07,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:07" (1/1) ... [2020-10-28 14:27:07,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:27:07,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:27:07,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:27:07,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:27:07,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:07" (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 [2020-10-28 14:27:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:27:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:27:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:27:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-28 14:27:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-10-28 14:27:07,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:27:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:27:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:27:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:27:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:27:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-28 14:27:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-28 14:27:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-10-28 14:27:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:27:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:27:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:27:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:27:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:27:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:27:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:27:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:27:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-28 14:27:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:27:08,201 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:27:08,201 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-28 14:27:08,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:27:08 BoogieIcfgContainer [2020-10-28 14:27:08,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:27:08,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:27:08,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:27:08,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:27:08,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:27:06" (1/3) ... [2020-10-28 14:27:08,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75083df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:27:08, skipping insertion in model container [2020-10-28 14:27:08,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:07" (2/3) ... [2020-10-28 14:27:08,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75083df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:27:08, skipping insertion in model container [2020-10-28 14:27:08,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:27:08" (3/3) ... [2020-10-28 14:27:08,214 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1122b.c [2020-10-28 14:27:08,227 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:27:08,232 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:27:08,245 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:27:08,273 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:27:08,273 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:27:08,273 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:27:08,273 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:27:08,274 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:27:08,274 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:27:08,274 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:27:08,274 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:27:08,293 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-10-28 14:27:08,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 14:27:08,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:08,300 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] [2020-10-28 14:27:08,301 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:08,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:08,307 INFO L82 PathProgramCache]: Analyzing trace with hash 980170601, now seen corresponding path program 1 times [2020-10-28 14:27:08,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:08,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134829609] [2020-10-28 14:27:08,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:08,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:08,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:08,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:08,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 14:27:08,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:27:08,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-28 14:27:08,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:08,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:08,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:08,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 14:27:08,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:08,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:27:08,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:27:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:08,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:08,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:08,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:08,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:08,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:27:08,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:08,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:08,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:08,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:27:08,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:08,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:08,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:27:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:08,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:08,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:08,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:08,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:27:08,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:27:08,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 14:27:08,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:08,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:08,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:08,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 14:27:08,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:08,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:08,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:27:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:08,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:08,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:08,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:08,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:08,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:27:08,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:08,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:27:08,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:08,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:08,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:27:08,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134829609] [2020-10-28 14:27:08,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:27:08,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:27:08,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341162154] [2020-10-28 14:27:08,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:27:08,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:27:08,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:27:08,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:27:08,994 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2020-10-28 14:27:09,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:27:09,369 INFO L93 Difference]: Finished difference Result 133 states and 216 transitions. [2020-10-28 14:27:09,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:27:09,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-28 14:27:09,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:27:09,381 INFO L225 Difference]: With dead ends: 133 [2020-10-28 14:27:09,382 INFO L226 Difference]: Without dead ends: 65 [2020-10-28 14:27:09,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:27:09,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-28 14:27:09,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-28 14:27:09,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-28 14:27:09,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 91 transitions. [2020-10-28 14:27:09,435 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 91 transitions. Word has length 23 [2020-10-28 14:27:09,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:27:09,435 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 91 transitions. [2020-10-28 14:27:09,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:27:09,436 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 91 transitions. [2020-10-28 14:27:09,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 14:27:09,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:09,437 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] [2020-10-28 14:27:09,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:27:09,438 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:09,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:09,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1159049452, now seen corresponding path program 1 times [2020-10-28 14:27:09,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:09,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563242362] [2020-10-28 14:27:09,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:27:09,535 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:27:09,536 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:27:09,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:27:09,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:27:09 BoogieIcfgContainer [2020-10-28 14:27:09,567 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:27:09,572 INFO L168 Benchmark]: Toolchain (without parser) took 2606.86 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 125.8 MB in the beginning and 141.7 MB in the end (delta: -15.9 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:09,573 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:27:09,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.54 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 111.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:09,576 INFO L168 Benchmark]: Boogie Preprocessor took 73.80 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 109.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:09,577 INFO L168 Benchmark]: RCFGBuilder took 765.68 ms. Allocated memory is still 151.0 MB. Free memory was 109.6 MB in the beginning and 111.7 MB in the end (delta: -2.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:09,578 INFO L168 Benchmark]: TraceAbstraction took 1360.04 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 111.2 MB in the beginning and 141.7 MB in the end (delta: -30.5 MB). Peak memory consumption was 3.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:09,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 393.54 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 111.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 73.80 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 109.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 765.68 ms. Allocated memory is still 151.0 MB. Free memory was 109.6 MB in the beginning and 111.7 MB in the end (delta: -2.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1360.04 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 111.2 MB in the beginning and 141.7 MB in the end (delta: -30.5 MB). Peak memory consumption was 3.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L172] double x = -1.0 / 0.0; [L173] double y = __VERIFIER_nondet_double(); [L174] CALL, EXPR fmod_double(x, y) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); [L174] RET, EXPR fmod_double(x, y) [L174] double res = fmod_double(x, y); [L177] CALL, EXPR isnan_double(res) [L18] return x != x; [L177] RET, EXPR isnan_double(res) [L177] COND TRUE !isnan_double(res) [L178] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1122b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 93 SDtfs, 10 SDslu, 78 SDs, 0 SdLazy, 94 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred 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, 0.4s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1606 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...