/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -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 0.1.25-5644d1e-m [2020-08-19 00:17:40,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:17:40,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:17:40,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:17:40,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:17:40,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:17:40,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:17:40,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:17:40,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:17:40,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:17:40,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:17:40,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:17:40,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:17:40,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:17:40,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:17:40,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:17:40,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:17:40,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:17:40,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:17:40,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:17:40,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:17:40,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:17:40,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:17:40,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:17:40,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:17:40,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:17:40,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:17:40,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:17:40,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:17:40,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:17:40,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:17:40,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:17:40,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:17:40,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:17:40,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:17:40,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:17:40,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:17:40,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:17:40,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:17:40,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:17:40,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:17:40,514 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 00:17:40,561 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:17:40,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:17:40,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:17:40,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:17:40,563 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:17:40,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:17:40,564 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:17:40,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:17:40,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:17:40,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:17:40,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:17:40,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:17:40,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:17:40,567 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:17:40,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:17:40,567 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:17:40,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:17:40,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:17:40,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:17:40,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:17:40,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:17:40,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:17:40,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:17:40,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:17:40,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:17:40,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:17:40,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:17:40,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:17:40,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:17:40,570 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=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:17:40,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:17:40,872 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:17:40,882 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:17:40,884 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:17:40,884 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:17:40,885 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-19 00:17:40,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2e0fc14e/ab76ce6d352e436781edad9d60d938f3/FLAG1fc01b0a7 [2020-08-19 00:17:41,465 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:17:41,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-19 00:17:41,474 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2e0fc14e/ab76ce6d352e436781edad9d60d938f3/FLAG1fc01b0a7 [2020-08-19 00:17:41,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2e0fc14e/ab76ce6d352e436781edad9d60d938f3 [2020-08-19 00:17:41,816 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:17:41,817 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:17:41,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:17:41,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:17:41,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:17:41,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:17:41" (1/1) ... [2020-08-19 00:17:41,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7bff4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:41, skipping insertion in model container [2020-08-19 00:17:41,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:17:41" (1/1) ... [2020-08-19 00:17:41,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:17:41,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:17:42,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:17:42,141 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:17:42,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:17:42,283 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:17:42,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:42 WrapperNode [2020-08-19 00:17:42,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:17:42,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:17:42,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:17:42,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:17:42,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:42" (1/1) ... [2020-08-19 00:17:42,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:42" (1/1) ... [2020-08-19 00:17:42,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:42" (1/1) ... [2020-08-19 00:17:42,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:42" (1/1) ... [2020-08-19 00:17:42,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:42" (1/1) ... [2020-08-19 00:17:42,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:42" (1/1) ... [2020-08-19 00:17:42,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:42" (1/1) ... [2020-08-19 00:17:42,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:17:42,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:17:42,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:17:42,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:17:42,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:42" (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 00:17:42,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:17:42,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:17:42,401 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-19 00:17:42,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-19 00:17:42,401 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:17:42,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:17:42,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-19 00:17:42,402 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-19 00:17:42,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:17:42,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 00:17:42,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:17:42,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:17:42,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 00:17:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:17:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-19 00:17:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:17:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:17:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-19 00:17:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:17:42,895 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:17:42,896 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-19 00:17:42,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:17:42 BoogieIcfgContainer [2020-08-19 00:17:42,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:17:42,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:17:42,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:17:42,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:17:42,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:17:41" (1/3) ... [2020-08-19 00:17:42,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a7751b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:17:42, skipping insertion in model container [2020-08-19 00:17:42,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:42" (2/3) ... [2020-08-19 00:17:42,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a7751b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:17:42, skipping insertion in model container [2020-08-19 00:17:42,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:17:42" (3/3) ... [2020-08-19 00:17:42,911 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-08-19 00:17:42,921 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:17:42,929 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:17:42,940 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:17:42,963 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:17:42,963 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:17:42,963 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:17:42,963 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:17:42,964 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:17:42,964 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:17:42,964 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:17:42,964 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:17:42,983 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-08-19 00:17:42,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 00:17:42,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:17:42,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:17:42,992 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:17:42,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:17:42,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2020-08-19 00:17:43,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:17:43,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488284048] [2020-08-19 00:17:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:17:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:17:43,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:17:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:17:43,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:17:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:17:43,274 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 00:17:43,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488284048] [2020-08-19 00:17:43,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:17:43,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:17:43,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497437203] [2020-08-19 00:17:43,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:17:43,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:17:43,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:17:43,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:17:43,312 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2020-08-19 00:17:43,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:17:43,613 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2020-08-19 00:17:43,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:17:43,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-19 00:17:43,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:17:43,627 INFO L225 Difference]: With dead ends: 116 [2020-08-19 00:17:43,627 INFO L226 Difference]: Without dead ends: 56 [2020-08-19 00:17:43,632 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 [2020-08-19 00:17:43,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-19 00:17:43,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-08-19 00:17:43,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-19 00:17:43,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-08-19 00:17:43,681 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2020-08-19 00:17:43,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:17:43,682 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-08-19 00:17:43,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:17:43,682 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-08-19 00:17:43,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 00:17:43,683 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:17:43,684 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] [2020-08-19 00:17:43,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:17:43,684 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:17:43,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:17:43,685 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2020-08-19 00:17:43,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:17:43,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579373623] [2020-08-19 00:17:43,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:17:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:17:43,794 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:17:43,795 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:17:43,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:17:43,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:17:43 BoogieIcfgContainer [2020-08-19 00:17:43,816 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:17:43,818 INFO L168 Benchmark]: Toolchain (without parser) took 2000.24 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 105.0 MB in the beginning and 97.9 MB in the end (delta: 7.1 MB). Peak memory consumption was 70.0 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:43,820 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-19 00:17:43,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.60 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 104.8 MB in the beginning and 181.9 MB in the end (delta: -77.1 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:43,822 INFO L168 Benchmark]: Boogie Preprocessor took 54.10 ms. Allocated memory is still 205.0 MB. Free memory was 181.9 MB in the beginning and 179.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:43,823 INFO L168 Benchmark]: RCFGBuilder took 561.95 ms. Allocated memory is still 205.0 MB. Free memory was 179.3 MB in the beginning and 150.7 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:43,824 INFO L168 Benchmark]: TraceAbstraction took 914.06 ms. Allocated memory is still 205.0 MB. Free memory was 150.0 MB in the beginning and 97.9 MB in the end (delta: 52.2 MB). Peak memory consumption was 52.2 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:43,843 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 465.60 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 104.8 MB in the beginning and 181.9 MB in the end (delta: -77.1 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.10 ms. Allocated memory is still 205.0 MB. Free memory was 181.9 MB in the beginning and 179.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 561.95 ms. Allocated memory is still 205.0 MB. Free memory was 179.3 MB in the beginning and 150.7 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 914.06 ms. Allocated memory is still 205.0 MB. Free memory was 150.0 MB in the beginning and 97.9 MB in the end (delta: 52.2 MB). Peak memory consumption was 52.2 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 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, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 14 SDslu, 61 SDs, 0 SdLazy, 80 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=61occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 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...