/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:09:04,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:09:04,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:09:04,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:09:04,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:09:04,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:09:04,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:09:04,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:09:04,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:09:04,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:09:04,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:09:04,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:09:04,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:09:04,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:09:04,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:09:04,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:09:04,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:09:04,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:09:04,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:09:04,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:09:04,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:09:04,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:09:04,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:09:04,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:09:04,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:09:04,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:09:04,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:09:04,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:09:04,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:09:04,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:09:04,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:09:04,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:09:04,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:09:04,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:09:04,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:09:04,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:09:04,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:09:04,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:09:04,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:09:04,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:09:04,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:09:04,531 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 [2020-08-19 05:09:04,553 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:09:04,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:09:04,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:09:04,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:09:04,556 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:09:04,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:09:04,556 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:09:04,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:09:04,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:09:04,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:09:04,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:09:04,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:09:04,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:09:04,557 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:09:04,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:09:04,558 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:09:04,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:09:04,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:09:04,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:09:04,559 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:09:04,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:09:04,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:09:04,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:09:04,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:09:04,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:09:04,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:09:04,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:09:04,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:09:04,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:09:04,561 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:09:04,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:09:04,895 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:09:04,899 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:09:04,901 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:09:04,901 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:09:04,902 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-19 05:09:04,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21c48f429/6cc28aa23c674b28a1461efdecf6ea03/FLAG80cabbd0c [2020-08-19 05:09:05,469 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:09:05,470 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-19 05:09:05,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21c48f429/6cc28aa23c674b28a1461efdecf6ea03/FLAG80cabbd0c [2020-08-19 05:09:05,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21c48f429/6cc28aa23c674b28a1461efdecf6ea03 [2020-08-19 05:09:05,865 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:09:05,868 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:09:05,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:09:05,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:09:05,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:09:05,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:09:05" (1/1) ... [2020-08-19 05:09:05,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@236d82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:09:05, skipping insertion in model container [2020-08-19 05:09:05,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:09:05" (1/1) ... [2020-08-19 05:09:05,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:09:05,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:09:06,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:09:06,163 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:09:06,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:09:06,330 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:09:06,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:09:06 WrapperNode [2020-08-19 05:09:06,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:09:06,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:09:06,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:09:06,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:09:06,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:09:06" (1/1) ... [2020-08-19 05:09:06,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:09:06" (1/1) ... [2020-08-19 05:09:06,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:09:06" (1/1) ... [2020-08-19 05:09:06,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:09:06" (1/1) ... [2020-08-19 05:09:06,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:09:06" (1/1) ... [2020-08-19 05:09:06,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:09:06" (1/1) ... [2020-08-19 05:09:06,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:09:06" (1/1) ... [2020-08-19 05:09:06,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:09:06,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:09:06,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:09:06,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:09:06,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:09:06" (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 [2020-08-19 05:09:06,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:09:06,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:09:06,454 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-19 05:09:06,454 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-08-19 05:09:06,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:09:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:09:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-19 05:09:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-19 05:09:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:09:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 05:09:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:09:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:09:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 05:09:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:09:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-08-19 05:09:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:09:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:09:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-19 05:09:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:09:06,939 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:09:06,939 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-19 05:09:06,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:09:06 BoogieIcfgContainer [2020-08-19 05:09:06,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:09:06,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:09:06,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:09:06,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:09:06,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:09:05" (1/3) ... [2020-08-19 05:09:06,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a711fd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:09:06, skipping insertion in model container [2020-08-19 05:09:06,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:09:06" (2/3) ... [2020-08-19 05:09:06,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a711fd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:09:06, skipping insertion in model container [2020-08-19 05:09:06,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:09:06" (3/3) ... [2020-08-19 05:09:06,959 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-08-19 05:09:06,969 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:09:06,978 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:09:06,992 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:09:07,018 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:09:07,018 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:09:07,018 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:09:07,018 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:09:07,018 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:09:07,019 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:09:07,019 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:09:07,019 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:09:07,036 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-08-19 05:09:07,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 05:09:07,042 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:09:07,043 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] [2020-08-19 05:09:07,043 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:09:07,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:09:07,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-08-19 05:09:07,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:09:07,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79784119] [2020-08-19 05:09:07,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:09:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:09:07,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:09:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:09:07,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:09:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:09:07,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 05:09:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:09:07,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:09:07,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79784119] [2020-08-19 05:09:07,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:09:07,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:09:07,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179569989] [2020-08-19 05:09:07,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:09:07,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:09:07,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:09:07,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:09:07,333 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-08-19 05:09:07,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:09:07,674 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-08-19 05:09:07,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 05:09:07,678 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-19 05:09:07,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:09:07,692 INFO L225 Difference]: With dead ends: 112 [2020-08-19 05:09:07,692 INFO L226 Difference]: Without dead ends: 55 [2020-08-19 05:09:07,698 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 [2020-08-19 05:09:07,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-19 05:09:07,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-19 05:09:07,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-19 05:09:07,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-08-19 05:09:07,767 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-08-19 05:09:07,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:09:07,768 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-08-19 05:09:07,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:09:07,769 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-08-19 05:09:07,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 05:09:07,771 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:09:07,772 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] [2020-08-19 05:09:07,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:09:07,772 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:09:07,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:09:07,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-08-19 05:09:07,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:09:07,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241466571] [2020-08-19 05:09:07,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:09:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 05:09:07,952 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 05:09:07,952 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 05:09:07,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:09:08,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:09:08 BoogieIcfgContainer [2020-08-19 05:09:08,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:09:08,012 INFO L168 Benchmark]: Toolchain (without parser) took 2144.19 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 102.7 MB in the beginning and 93.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 65.0 MB. Max. memory is 7.1 GB. [2020-08-19 05:09:08,015 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 05:09:08,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 461.54 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 102.5 MB in the beginning and 178.3 MB in the end (delta: -75.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-08-19 05:09:08,017 INFO L168 Benchmark]: Boogie Preprocessor took 56.45 ms. Allocated memory is still 202.4 MB. Free memory was 178.3 MB in the beginning and 176.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-19 05:09:08,021 INFO L168 Benchmark]: RCFGBuilder took 559.57 ms. Allocated memory is still 202.4 MB. Free memory was 175.7 MB in the beginning and 148.2 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2020-08-19 05:09:08,022 INFO L168 Benchmark]: TraceAbstraction took 1058.82 ms. Allocated memory is still 202.4 MB. Free memory was 147.5 MB in the beginning and 93.3 MB in the end (delta: 54.2 MB). Peak memory consumption was 54.2 MB. Max. memory is 7.1 GB. [2020-08-19 05:09:08,029 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 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 461.54 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 102.5 MB in the beginning and 178.3 MB in the end (delta: -75.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.45 ms. Allocated memory is still 202.4 MB. Free memory was 178.3 MB in the beginning and 176.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 559.57 ms. Allocated memory is still 202.4 MB. Free memory was 175.7 MB in the beginning and 148.2 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1058.82 ms. Allocated memory is still 202.4 MB. Free memory was 147.5 MB in the beginning and 93.3 MB in the end (delta: 54.2 MB). Peak memory consumption was 54.2 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 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; [L129] CALL isfinite_float(x) [L109] __int32_t ix; [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); [L129] RET isfinite_float(x) [L129] COND TRUE isfinite_float(x) [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] COND TRUE res != x [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 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: 73 SDtfs, 6 SDslu, 63 SDs, 0 SdLazy, 78 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=60occurred 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...