/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=LOWLEXORDER -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 [2020-08-18 18:38:57,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:38:57,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:38:57,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:38:57,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:38:57,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:38:57,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:38:57,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:38:57,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:38:58,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:38:58,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:38:58,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:38:58,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:38:58,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:38:58,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:38:58,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:38:58,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:38:58,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:38:58,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:38:58,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:38:58,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:38:58,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:38:58,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:38:58,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:38:58,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:38:58,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:38:58,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:38:58,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:38:58,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:38:58,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:38:58,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:38:58,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:38:58,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:38:58,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:38:58,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:38:58,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:38:58,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:38:58,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:38:58,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:38:58,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:38:58,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:38:58,060 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 [2020-08-18 18:38:58,096 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:38:58,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:38:58,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:38:58,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:38:58,099 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:38:58,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:38:58,099 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:38:58,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:38:58,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:38:58,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:38:58,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:38:58,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:38:58,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:38:58,102 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:38:58,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:38:58,102 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:38:58,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:38:58,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:38:58,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:38:58,103 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:38:58,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:38:58,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:38:58,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:38:58,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:38:58,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:38:58,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:38:58,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:38:58,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:38:58,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:38:58,105 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=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:38:58,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:38:58,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:38:58,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:38:58,427 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:38:58,428 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:38:58,429 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-18 18:38:58,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa45dd114/472b4e4c9bba49e6916c3252c98bd1d6/FLAG192b01d75 [2020-08-18 18:38:58,938 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:38:58,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-18 18:38:58,947 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa45dd114/472b4e4c9bba49e6916c3252c98bd1d6/FLAG192b01d75 [2020-08-18 18:38:59,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa45dd114/472b4e4c9bba49e6916c3252c98bd1d6 [2020-08-18 18:38:59,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:38:59,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:38:59,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:38:59,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:38:59,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:38:59,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:38:59" (1/1) ... [2020-08-18 18:38:59,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c04ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:59, skipping insertion in model container [2020-08-18 18:38:59,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:38:59" (1/1) ... [2020-08-18 18:38:59,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:38:59,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:38:59,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:38:59,654 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:38:59,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:38:59,814 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:38:59,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:59 WrapperNode [2020-08-18 18:38:59,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:38:59,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:38:59,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:38:59,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:38:59,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:59" (1/1) ... [2020-08-18 18:38:59,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:59" (1/1) ... [2020-08-18 18:38:59,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:59" (1/1) ... [2020-08-18 18:38:59,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:59" (1/1) ... [2020-08-18 18:38:59,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:59" (1/1) ... [2020-08-18 18:38:59,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:59" (1/1) ... [2020-08-18 18:38:59,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:59" (1/1) ... [2020-08-18 18:38:59,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:38:59,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:38:59,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:38:59,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:38:59,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:59" (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 [2020-08-18 18:38:59,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:38:59,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:38:59,940 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-18 18:38:59,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-18 18:38:59,940 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:38:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:38:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-18 18:38:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-18 18:38:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:38:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 18:38:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:38:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:38:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 18:38:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:38:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-18 18:38:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:38:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:38:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 18:38:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:39:00,475 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:39:00,475 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-18 18:39:00,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:39:00 BoogieIcfgContainer [2020-08-18 18:39:00,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:39:00,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:39:00,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:39:00,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:39:00,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:38:59" (1/3) ... [2020-08-18 18:39:00,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf4d987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:39:00, skipping insertion in model container [2020-08-18 18:39:00,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:38:59" (2/3) ... [2020-08-18 18:39:00,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf4d987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:39:00, skipping insertion in model container [2020-08-18 18:39:00,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:39:00" (3/3) ... [2020-08-18 18:39:00,494 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-08-18 18:39:00,503 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:39:00,511 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:39:00,525 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:39:00,552 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:39:00,553 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:39:00,553 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:39:00,553 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:39:00,553 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:39:00,553 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:39:00,553 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:39:00,554 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:39:00,571 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-08-18 18:39:00,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 18:39:00,578 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:39:00,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:39:00,580 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:39:00,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:39:00,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2020-08-18 18:39:00,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:39:00,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608149576] [2020-08-18 18:39:00,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:39:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:39:00,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:39:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:39:00,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:39:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:39:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:39:00,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608149576] [2020-08-18 18:39:00,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:39:00,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:39:00,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240961780] [2020-08-18 18:39:00,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:39:00,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:39:00,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:39:00,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:39:00,860 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2020-08-18 18:39:01,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:39:01,130 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2020-08-18 18:39:01,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 18:39:01,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 18:39:01,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:39:01,144 INFO L225 Difference]: With dead ends: 116 [2020-08-18 18:39:01,144 INFO L226 Difference]: Without dead ends: 56 [2020-08-18 18:39:01,148 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 [2020-08-18 18:39:01,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-18 18:39:01,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-08-18 18:39:01,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-18 18:39:01,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-08-18 18:39:01,203 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2020-08-18 18:39:01,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:39:01,203 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-08-18 18:39:01,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:39:01,204 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-08-18 18:39:01,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 18:39:01,205 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:39:01,205 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] [2020-08-18 18:39:01,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:39:01,206 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:39:01,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:39:01,207 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2020-08-18 18:39:01,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:39:01,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565585649] [2020-08-18 18:39:01,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:39:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 18:39:01,292 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 18:39:01,293 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 18:39:01,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:39:01,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:39:01 BoogieIcfgContainer [2020-08-18 18:39:01,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:39:01,322 INFO L168 Benchmark]: Toolchain (without parser) took 2031.27 ms. Allocated memory was 148.4 MB in the beginning and 203.4 MB in the end (delta: 55.1 MB). Free memory was 103.8 MB in the beginning and 95.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2020-08-18 18:39:01,323 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 18:39:01,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 524.02 ms. Allocated memory was 148.4 MB in the beginning and 203.4 MB in the end (delta: 55.1 MB). Free memory was 103.6 MB in the beginning and 179.5 MB in the end (delta: -75.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-08-18 18:39:01,325 INFO L168 Benchmark]: Boogie Preprocessor took 51.93 ms. Allocated memory is still 203.4 MB. Free memory was 179.5 MB in the beginning and 177.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-18 18:39:01,326 INFO L168 Benchmark]: RCFGBuilder took 612.54 ms. Allocated memory is still 203.4 MB. Free memory was 177.0 MB in the beginning and 148.4 MB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2020-08-18 18:39:01,327 INFO L168 Benchmark]: TraceAbstraction took 835.27 ms. Allocated memory is still 203.4 MB. Free memory was 148.4 MB in the beginning and 95.8 MB in the end (delta: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. [2020-08-18 18:39:01,331 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 524.02 ms. Allocated memory was 148.4 MB in the beginning and 203.4 MB in the end (delta: 55.1 MB). Free memory was 103.6 MB in the beginning and 179.5 MB in the end (delta: -75.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.93 ms. Allocated memory is still 203.4 MB. Free memory was 179.5 MB in the beginning and 177.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 612.54 ms. Allocated memory is still 203.4 MB. Free memory was 177.0 MB in the beginning and 148.4 MB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 835.27 ms. Allocated memory is still 203.4 MB. Free memory was 148.4 MB in the beginning and 95.8 MB in the end (delta: 52.6 MB). Peak memory consumption was 52.6 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: 0.7s, 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...