/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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/float_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:20:57,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:20:57,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:20:57,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:20:57,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:20:57,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:20:57,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:20:57,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:20:57,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:20:57,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:20:57,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:20:57,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:20:57,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:20:57,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:20:57,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:20:57,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:20:57,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:20:57,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:20:57,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:20:57,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:20:57,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:20:57,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:20:57,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:20:57,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:20:57,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:20:57,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:20:57,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:20:57,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:20:57,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:20:57,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:20:57,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:20:57,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:20:57,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:20:57,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:20:57,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:20:57,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:20:57,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:20:57,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:20:57,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:20:57,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:20:57,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:20:57,558 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 13:20:57,584 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:20:57,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:20:57,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:20:57,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:20:57,586 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:20:57,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:20:57,587 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:20:57,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:20:57,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:20:57,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:20:57,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:20:57,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:20:57,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:20:57,588 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:20:57,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:20:57,588 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:20:57,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:20:57,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:20:57,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:20:57,589 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:20:57,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:20:57,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:20:57,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:20:57,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:20:57,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:20:57,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:20:57,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:20:57,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:20:57,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:20:57,591 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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:20:58,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:20:58,078 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:20:58,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:20:58,085 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:20:58,087 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:20:58,088 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-09-25 13:20:58,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96cb8f4e8/113591f92a00490391f64f844e52b81d/FLAGe9b16d527 [2020-09-25 13:20:58,716 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:20:58,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-09-25 13:20:58,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96cb8f4e8/113591f92a00490391f64f844e52b81d/FLAGe9b16d527 [2020-09-25 13:20:59,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96cb8f4e8/113591f92a00490391f64f844e52b81d [2020-09-25 13:20:59,057 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:20:59,062 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:20:59,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:20:59,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:20:59,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:20:59,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:20:59" (1/1) ... [2020-09-25 13:20:59,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@173f5186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:59, skipping insertion in model container [2020-09-25 13:20:59,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:20:59" (1/1) ... [2020-09-25 13:20:59,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:20:59,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:20:59,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:20:59,398 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:20:59,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:20:59,543 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:20:59,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:59 WrapperNode [2020-09-25 13:20:59,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:20:59,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:20:59,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:20:59,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:20:59,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:59" (1/1) ... [2020-09-25 13:20:59,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:59" (1/1) ... [2020-09-25 13:20:59,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:59" (1/1) ... [2020-09-25 13:20:59,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:59" (1/1) ... [2020-09-25 13:20:59,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:59" (1/1) ... [2020-09-25 13:20:59,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:59" (1/1) ... [2020-09-25 13:20:59,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:59" (1/1) ... [2020-09-25 13:20:59,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:20:59,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:20:59,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:20:59,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:20:59,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:59" (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 13:20:59,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:20:59,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:20:59,680 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-09-25 13:20:59,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-25 13:20:59,680 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:20:59,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:20:59,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-25 13:20:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-09-25 13:20:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 13:20:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 13:20:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 13:20:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:20:59,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 13:20:59,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 13:20:59,682 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-25 13:20:59,682 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:20:59,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:20:59,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-25 13:20:59,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:21:00,239 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:21:00,239 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-25 13:21:00,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:21:00 BoogieIcfgContainer [2020-09-25 13:21:00,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:21:00,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:21:00,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:21:00,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:21:00,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:20:59" (1/3) ... [2020-09-25 13:21:00,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19dcf871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:21:00, skipping insertion in model container [2020-09-25 13:21:00,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:59" (2/3) ... [2020-09-25 13:21:00,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19dcf871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:21:00, skipping insertion in model container [2020-09-25 13:21:00,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:21:00" (3/3) ... [2020-09-25 13:21:00,257 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-09-25 13:21:00,269 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:21:00,280 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:21:00,303 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:21:00,337 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:21:00,337 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:21:00,337 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:21:00,338 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:21:00,338 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:21:00,338 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:21:00,338 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:21:00,338 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:21:00,366 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-09-25 13:21:00,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 13:21:00,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:00,378 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] [2020-09-25 13:21:00,378 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:00,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:00,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1988505082, now seen corresponding path program 1 times [2020-09-25 13:21:00,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:00,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067440526] [2020-09-25 13:21:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:00,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:00,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:00,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:00,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 13:21:00,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:00,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-25 13:21:00,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:00,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 13:21:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:00,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:21:00,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:00,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:00,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:00,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:21:00,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:00,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:21:00,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:00,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:00,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:00,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:00,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:00,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:00,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 13:21:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:00,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:00,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:00,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:00,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:21:00,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:00,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:21:00,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:00,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:00,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:00,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:21:00,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:00,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:00,975 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 13:21:00,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067440526] [2020-09-25 13:21:00,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:21:00,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:21:00,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207538145] [2020-09-25 13:21:00,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:21:00,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:01,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:21:01,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:21:01,006 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 4 states. [2020-09-25 13:21:01,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:01,470 INFO L93 Difference]: Finished difference Result 308 states and 372 transitions. [2020-09-25 13:21:01,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 13:21:01,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-25 13:21:01,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:01,493 INFO L225 Difference]: With dead ends: 308 [2020-09-25 13:21:01,493 INFO L226 Difference]: Without dead ends: 158 [2020-09-25 13:21:01,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:21:01,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-25 13:21:01,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-25 13:21:01,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-25 13:21:01,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 174 transitions. [2020-09-25 13:21:01,562 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 174 transitions. Word has length 43 [2020-09-25 13:21:01,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:01,562 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 174 transitions. [2020-09-25 13:21:01,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:21:01,563 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 174 transitions. [2020-09-25 13:21:01,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 13:21:01,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:01,566 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] [2020-09-25 13:21:01,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:21:01,566 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:01,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:01,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1298136515, now seen corresponding path program 1 times [2020-09-25 13:21:01,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:01,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321695060] [2020-09-25 13:21:01,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 13:21:01,624 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 13:21:01,624 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 13:21:01,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:21:01,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:21:01 BoogieIcfgContainer [2020-09-25 13:21:01,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:21:01,656 INFO L168 Benchmark]: Toolchain (without parser) took 2595.74 ms. Allocated memory was 140.0 MB in the beginning and 236.5 MB in the end (delta: 96.5 MB). Free memory was 102.0 MB in the beginning and 160.7 MB in the end (delta: -58.7 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB. [2020-09-25 13:21:01,657 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 13:21:01,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 480.94 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 179.5 MB in the end (delta: -78.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-09-25 13:21:01,659 INFO L168 Benchmark]: Boogie Preprocessor took 60.92 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 176.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-25 13:21:01,660 INFO L168 Benchmark]: RCFGBuilder took 641.53 ms. Allocated memory is still 202.9 MB. Free memory was 176.9 MB in the beginning and 140.3 MB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. [2020-09-25 13:21:01,661 INFO L168 Benchmark]: TraceAbstraction took 1404.27 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 139.6 MB in the beginning and 160.7 MB in the end (delta: -21.1 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-25 13:21:01,665 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 480.94 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 179.5 MB in the end (delta: -78.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.92 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 176.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 641.53 ms. Allocated memory is still 202.9 MB. Free memory was 176.9 MB in the beginning and 140.3 MB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1404.27 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 139.6 MB in the beginning and 160.7 MB in the end (delta: -21.1 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 32, overapproximation of bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = 0.0f; [L127] float y = __VERIFIER_nondet_float(); [L129] COND TRUE (y < 0.0f || y > 0.0f) [L131] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] EXPR res == 0.0f && __signbit_float(res) == 0 [L134] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 166 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 179 SDtfs, 39 SDslu, 129 SDs, 0 SdLazy, 195 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred 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, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 3150 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...