/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=0.6 -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 01:06:16,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:06:16,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:06:16,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:06:16,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:06:16,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:06:16,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:06:16,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:06:16,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:06:16,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:06:16,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:06:16,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:06:16,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:06:16,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:06:16,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:06:16,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:06:16,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:06:16,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:06:16,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:06:16,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:06:16,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:06:16,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:06:16,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:06:16,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:06:16,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:06:16,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:06:16,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:06:16,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:06:16,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:06:16,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:06:16,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:06:16,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:06:16,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:06:16,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:06:16,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:06:16,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:06:16,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:06:16,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:06:16,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:06:16,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:06:16,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:06:16,501 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 01:06:16,523 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:06:16,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:06:16,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:06:16,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:06:16,525 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:06:16,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:06:16,526 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:06:16,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:06:16,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:06:16,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:06:16,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:06:16,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:06:16,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:06:16,527 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:06:16,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:06:16,527 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:06:16,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:06:16,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:06:16,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:06:16,528 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:06:16,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:06:16,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:06:16,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:06:16,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:06:16,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:06:16,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:06:16,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:06:16,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:06:16,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:06:16,530 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=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:06:16,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:06:16,910 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:06:16,913 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:06:16,915 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:06:16,917 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:06:16,917 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-19 01:06:16,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ec4e1ad5/0c88d0a6e06347f989456a92984d1b69/FLAGc322927ca [2020-08-19 01:06:17,489 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:06:17,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-19 01:06:17,499 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ec4e1ad5/0c88d0a6e06347f989456a92984d1b69/FLAGc322927ca [2020-08-19 01:06:17,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ec4e1ad5/0c88d0a6e06347f989456a92984d1b69 [2020-08-19 01:06:17,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:06:17,850 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:06:17,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:06:17,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:06:17,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:06:17,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:06:17" (1/1) ... [2020-08-19 01:06:17,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8f1a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:17, skipping insertion in model container [2020-08-19 01:06:17,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:06:17" (1/1) ... [2020-08-19 01:06:17,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:06:17,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:06:18,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:06:18,117 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:06:18,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:06:18,263 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:06:18,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:18 WrapperNode [2020-08-19 01:06:18,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:06:18,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:06:18,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:06:18,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:06:18,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:18" (1/1) ... [2020-08-19 01:06:18,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:18" (1/1) ... [2020-08-19 01:06:18,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:18" (1/1) ... [2020-08-19 01:06:18,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:18" (1/1) ... [2020-08-19 01:06:18,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:18" (1/1) ... [2020-08-19 01:06:18,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:18" (1/1) ... [2020-08-19 01:06:18,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:18" (1/1) ... [2020-08-19 01:06:18,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:06:18,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:06:18,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:06:18,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:06:18,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:18" (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 01:06:18,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:06:18,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:06:18,388 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-19 01:06:18,388 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-08-19 01:06:18,388 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:06:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:06:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-19 01:06:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-19 01:06:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:06:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 01:06:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:06:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:06:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 01:06:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:06:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-08-19 01:06:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:06:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:06:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-19 01:06:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:06:18,822 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:06:18,823 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-19 01:06:18,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:06:18 BoogieIcfgContainer [2020-08-19 01:06:18,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:06:18,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:06:18,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:06:18,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:06:18,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:06:17" (1/3) ... [2020-08-19 01:06:18,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a021260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:06:18, skipping insertion in model container [2020-08-19 01:06:18,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:06:18" (2/3) ... [2020-08-19 01:06:18,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a021260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:06:18, skipping insertion in model container [2020-08-19 01:06:18,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:06:18" (3/3) ... [2020-08-19 01:06:18,837 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-08-19 01:06:18,850 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:06:18,864 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:06:18,890 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:06:18,916 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:06:18,917 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:06:18,917 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:06:18,917 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:06:18,918 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:06:18,918 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:06:18,918 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:06:18,918 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:06:18,938 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-08-19 01:06:18,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 01:06:18,945 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:18,947 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 01:06:18,947 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:18,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:18,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-08-19 01:06:18,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:18,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416638173] [2020-08-19 01:06:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:19,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:06:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:19,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:06:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:19,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:06:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:06:19,227 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 01:06:19,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416638173] [2020-08-19 01:06:19,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:06:19,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:06:19,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289720470] [2020-08-19 01:06:19,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:06:19,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:06:19,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:06:19,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:06:19,256 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-08-19 01:06:19,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:06:19,601 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-08-19 01:06:19,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:06:19,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-19 01:06:19,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:06:19,625 INFO L225 Difference]: With dead ends: 112 [2020-08-19 01:06:19,625 INFO L226 Difference]: Without dead ends: 55 [2020-08-19 01:06:19,630 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 01:06:19,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-19 01:06:19,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-19 01:06:19,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-19 01:06:19,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-08-19 01:06:19,710 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-08-19 01:06:19,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:06:19,711 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-08-19 01:06:19,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:06:19,714 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-08-19 01:06:19,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 01:06:19,717 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:06:19,718 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 01:06:19,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:06:19,719 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:06:19,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:06:19,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-08-19 01:06:19,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:06:19,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008587626] [2020-08-19 01:06:19,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:06:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:06:19,884 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:06:19,884 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:06:19,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:06:19,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:06:19 BoogieIcfgContainer [2020-08-19 01:06:19,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:06:19,913 INFO L168 Benchmark]: Toolchain (without parser) took 2061.64 ms. Allocated memory was 136.3 MB in the beginning and 198.7 MB in the end (delta: 62.4 MB). Free memory was 99.8 MB in the beginning and 90.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 72.1 MB. Max. memory is 7.1 GB. [2020-08-19 01:06:19,914 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 136.3 MB. Free memory was 117.9 MB in the beginning and 117.5 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-08-19 01:06:19,915 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.28 ms. Allocated memory was 136.3 MB in the beginning and 198.7 MB in the end (delta: 62.4 MB). Free memory was 99.4 MB in the beginning and 174.8 MB in the end (delta: -75.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-19 01:06:19,916 INFO L168 Benchmark]: Boogie Preprocessor took 58.86 ms. Allocated memory is still 198.7 MB. Free memory was 174.8 MB in the beginning and 172.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-08-19 01:06:19,917 INFO L168 Benchmark]: RCFGBuilder took 504.65 ms. Allocated memory is still 198.7 MB. Free memory was 172.7 MB in the beginning and 143.9 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2020-08-19 01:06:19,918 INFO L168 Benchmark]: TraceAbstraction took 1079.86 ms. Allocated memory is still 198.7 MB. Free memory was 143.9 MB in the beginning and 90.1 MB in the end (delta: 53.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. [2020-08-19 01:06:19,922 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 136.3 MB. Free memory was 117.9 MB in the beginning and 117.5 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 413.28 ms. Allocated memory was 136.3 MB in the beginning and 198.7 MB in the end (delta: 62.4 MB). Free memory was 99.4 MB in the beginning and 174.8 MB in the end (delta: -75.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.86 ms. Allocated memory is still 198.7 MB. Free memory was 174.8 MB in the beginning and 172.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 504.65 ms. Allocated memory is still 198.7 MB. Free memory was 172.7 MB in the beginning and 143.9 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1079.86 ms. Allocated memory is still 198.7 MB. Free memory was 143.9 MB in the beginning and 90.1 MB in the end (delta: 53.8 MB). Peak memory consumption was 53.8 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...