/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -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 03:32:03,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:32:03,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:32:03,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:32:03,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:32:03,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:32:03,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:32:03,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:32:03,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:32:03,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:32:03,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:32:03,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:32:03,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:32:03,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:32:03,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:32:03,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:32:03,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:32:03,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:32:03,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:32:03,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:32:03,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:32:03,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:32:03,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:32:03,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:32:03,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:32:03,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:32:03,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:32:03,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:32:03,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:32:03,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 03:32:03,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:32:03,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:32:03,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:32:03,429 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 03:32:03,450 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:32:03,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:32:03,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:32:03,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:32:03,452 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:32:03,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:32:03,453 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:32:03,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:32:03,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:32:03,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:32:03,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:32:03,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:32:03,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:32:03,454 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:32:03,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:32:03,454 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:32:03,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:32:03,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:32:03,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:32:03,455 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:32:03,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:32:03,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:32:03,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:32:03,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:32:03,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:32:03,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:32:03,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:32:03,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:32:03,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:32:03,457 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:32:03,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:32:03,789 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:32:03,792 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:32:03,794 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:32:03,795 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:32:03,796 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-19 03:32:03,874 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d5850c4c/af93392a9fee4d78baf6a0d850b2dfd8/FLAGc99fd434f [2020-08-19 03:32:04,355 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:32:04,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-19 03:32:04,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d5850c4c/af93392a9fee4d78baf6a0d850b2dfd8/FLAGc99fd434f [2020-08-19 03:32:04,786 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d5850c4c/af93392a9fee4d78baf6a0d850b2dfd8 [2020-08-19 03:32:04,795 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:32:04,797 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:32:04,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:32:04,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:32:04,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:32:04,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:32:04" (1/1) ... [2020-08-19 03:32:04,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750f39ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:04, skipping insertion in model container [2020-08-19 03:32:04,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:32:04" (1/1) ... [2020-08-19 03:32:04,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:32:04,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:32:05,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:32:05,042 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:32:05,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:32:05,186 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:32:05,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:05 WrapperNode [2020-08-19 03:32:05,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:32:05,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:32:05,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:32:05,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:32:05,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:05" (1/1) ... [2020-08-19 03:32:05,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:05" (1/1) ... [2020-08-19 03:32:05,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:05" (1/1) ... [2020-08-19 03:32:05,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:05" (1/1) ... [2020-08-19 03:32:05,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:05" (1/1) ... [2020-08-19 03:32:05,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:05" (1/1) ... [2020-08-19 03:32:05,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:05" (1/1) ... [2020-08-19 03:32:05,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:32:05,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:32:05,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:32:05,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:32:05,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:05" (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 03:32:05,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:32:05,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:32:05,305 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-19 03:32:05,305 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-08-19 03:32:05,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:32:05,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:32:05,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-19 03:32:05,306 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-19 03:32:05,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:32:05,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 03:32:05,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:32:05,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:32:05,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 03:32:05,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:32:05,307 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-08-19 03:32:05,307 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:32:05,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:32:05,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-19 03:32:05,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:32:05,780 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:32:05,780 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-19 03:32:05,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:32:05 BoogieIcfgContainer [2020-08-19 03:32:05,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:32:05,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:32:05,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:32:05,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:32:05,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:32:04" (1/3) ... [2020-08-19 03:32:05,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e023e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:32:05, skipping insertion in model container [2020-08-19 03:32:05,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:05" (2/3) ... [2020-08-19 03:32:05,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e023e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:32:05, skipping insertion in model container [2020-08-19 03:32:05,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:32:05" (3/3) ... [2020-08-19 03:32:05,794 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-08-19 03:32:05,805 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:32:05,814 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:32:05,828 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:32:05,854 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:32:05,855 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:32:05,855 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:32:05,855 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:32:05,855 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:32:05,856 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:32:05,856 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:32:05,856 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:32:05,878 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-08-19 03:32:05,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 03:32:05,885 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:05,887 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 03:32:05,887 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:05,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:05,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-08-19 03:32:05,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:05,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524126101] [2020-08-19 03:32:05,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:06,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:06,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:32:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:06,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 03:32:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:06,249 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 03:32:06,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524126101] [2020-08-19 03:32:06,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:32:06,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:32:06,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5116157] [2020-08-19 03:32:06,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:32:06,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:06,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:32:06,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:32:06,277 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-08-19 03:32:06,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:06,558 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-08-19 03:32:06,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:32:06,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-19 03:32:06,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:06,573 INFO L225 Difference]: With dead ends: 112 [2020-08-19 03:32:06,573 INFO L226 Difference]: Without dead ends: 55 [2020-08-19 03:32:06,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:32:06,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-19 03:32:06,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-19 03:32:06,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-19 03:32:06,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-08-19 03:32:06,632 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-08-19 03:32:06,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:06,632 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-08-19 03:32:06,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:32:06,633 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-08-19 03:32:06,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 03:32:06,635 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:06,635 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 03:32:06,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:32:06,636 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:06,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:06,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-08-19 03:32:06,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:06,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379763855] [2020-08-19 03:32:06,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 03:32:06,735 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 03:32:06,735 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 03:32:06,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:32:06,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:32:06 BoogieIcfgContainer [2020-08-19 03:32:06,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:32:06,792 INFO L168 Benchmark]: Toolchain (without parser) took 1994.61 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.9 MB in the beginning and 94.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 71.2 MB. Max. memory is 7.1 GB. [2020-08-19 03:32:06,796 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 03:32:06,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.17 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.7 MB in the beginning and 179.0 MB in the end (delta: -76.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-19 03:32:06,800 INFO L168 Benchmark]: Boogie Preprocessor took 58.77 ms. Allocated memory is still 202.4 MB. Free memory was 179.0 MB in the beginning and 176.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-19 03:32:06,801 INFO L168 Benchmark]: RCFGBuilder took 538.50 ms. Allocated memory is still 202.4 MB. Free memory was 176.4 MB in the beginning and 148.8 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-08-19 03:32:06,802 INFO L168 Benchmark]: TraceAbstraction took 1000.03 ms. Allocated memory is still 202.4 MB. Free memory was 148.2 MB in the beginning and 94.0 MB in the end (delta: 54.1 MB). Peak memory consumption was 54.1 MB. Max. memory is 7.1 GB. [2020-08-19 03:32:06,807 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 389.17 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.7 MB in the beginning and 179.0 MB in the end (delta: -76.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.77 ms. Allocated memory is still 202.4 MB. Free memory was 179.0 MB in the beginning and 176.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 538.50 ms. Allocated memory is still 202.4 MB. Free memory was 176.4 MB in the beginning and 148.8 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1000.03 ms. Allocated memory is still 202.4 MB. Free memory was 148.2 MB in the beginning and 94.0 MB in the end (delta: 54.1 MB). Peak memory consumption was 54.1 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: 0.8s, 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, 0.1s 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...