/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:04:42,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:04:42,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:04:42,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:04:42,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:04:42,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:04:42,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:04:42,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:04:42,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:04:42,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:04:42,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:04:42,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:04:42,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:04:42,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:04:42,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:04:42,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:04:42,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:04:42,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:04:42,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:04:42,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:04:42,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:04:42,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:04:42,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:04:42,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:04:42,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:04:42,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:04:42,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:04:42,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:04:42,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:04:42,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 14:04:42,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:04:42,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:04:42,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:04:42,606 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 [2020-08-21 14:04:42,649 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:04:42,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:04:42,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:04:42,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:04:42,652 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:04:42,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:04:42,653 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:04:42,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:04:42,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:04:42,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:04:42,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:04:42,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:04:42,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:04:42,656 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:04:42,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:04:42,656 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:04:42,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:04:42,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:04:42,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:04:42,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:04:42,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:04:42,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:04:42,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:04:42,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:04:42,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:04:42,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:04:42,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:04:42,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:04:42,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:04:42,659 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 -> log-additional-information=true; [2020-08-21 14:04:42,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:04:42,980 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:04:42,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:04:42,987 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:04:42,988 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:04:42,988 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2020-08-21 14:04:43,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39f715529/45aa7f3ccf4b4adfa7212fca436aeec1/FLAG6c35a51c4 [2020-08-21 14:04:43,513 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:04:43,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2020-08-21 14:04:43,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39f715529/45aa7f3ccf4b4adfa7212fca436aeec1/FLAG6c35a51c4 [2020-08-21 14:04:43,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39f715529/45aa7f3ccf4b4adfa7212fca436aeec1 [2020-08-21 14:04:43,897 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:04:43,899 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:04:43,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:04:43,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:04:43,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:04:43,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:04:43" (1/1) ... [2020-08-21 14:04:43,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d73c255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:43, skipping insertion in model container [2020-08-21 14:04:43,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:04:43" (1/1) ... [2020-08-21 14:04:43,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:04:43,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:04:44,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:04:44,112 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:04:44,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:04:44,160 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:04:44,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:44 WrapperNode [2020-08-21 14:04:44,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:04:44,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:04:44,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:04:44,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:04:44,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:44" (1/1) ... [2020-08-21 14:04:44,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:44" (1/1) ... [2020-08-21 14:04:44,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:44" (1/1) ... [2020-08-21 14:04:44,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:44" (1/1) ... [2020-08-21 14:04:44,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:44" (1/1) ... [2020-08-21 14:04:44,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:44" (1/1) ... [2020-08-21 14:04:44,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:44" (1/1) ... [2020-08-21 14:04:44,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:04:44,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:04:44,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:04:44,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:04:44,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:44" (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 [2020-08-21 14:04:44,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:04:44,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:04:44,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-08-21 14:04:44,356 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-08-21 14:04:44,356 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-08-21 14:04:44,356 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:04:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:04:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-08-21 14:04:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:04:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 14:04:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:04:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:04:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-08-21 14:04:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-08-21 14:04:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:04:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:04:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:04:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:04:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 14:04:44,645 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:04:44,646 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-21 14:04:44,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:04:44 BoogieIcfgContainer [2020-08-21 14:04:44,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:04:44,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:04:44,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:04:44,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:04:44,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:04:43" (1/3) ... [2020-08-21 14:04:44,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70cb9629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:04:44, skipping insertion in model container [2020-08-21 14:04:44,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:04:44" (2/3) ... [2020-08-21 14:04:44,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70cb9629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:04:44, skipping insertion in model container [2020-08-21 14:04:44,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:04:44" (3/3) ... [2020-08-21 14:04:44,661 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2020-08-21 14:04:44,674 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:04:44,684 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:04:44,708 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:04:44,762 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:04:44,762 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:04:44,762 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:04:44,762 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:04:44,762 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:04:44,763 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:04:44,763 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:04:44,763 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:04:44,796 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-08-21 14:04:44,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 14:04:44,802 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:04:44,803 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] [2020-08-21 14:04:44,803 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:04:44,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:04:44,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1674881228, now seen corresponding path program 1 times [2020-08-21 14:04:44,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:04:44,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902413326] [2020-08-21 14:04:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:04:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:44,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:04:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:45,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:04:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:45,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:04:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:45,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 14:04:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:45,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:04:45,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902413326] [2020-08-21 14:04:45,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:04:45,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:04:45,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205954412] [2020-08-21 14:04:45,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:04:45,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:04:45,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:04:45,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:04:45,094 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-08-21 14:04:45,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:04:45,347 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2020-08-21 14:04:45,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 14:04:45,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-08-21 14:04:45,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:04:45,360 INFO L225 Difference]: With dead ends: 71 [2020-08-21 14:04:45,360 INFO L226 Difference]: Without dead ends: 36 [2020-08-21 14:04:45,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 14:04:45,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-21 14:04:45,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-08-21 14:04:45,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-21 14:04:45,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-08-21 14:04:45,414 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2020-08-21 14:04:45,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:04:45,414 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-08-21 14:04:45,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:04:45,415 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-08-21 14:04:45,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 14:04:45,417 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:04:45,417 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] [2020-08-21 14:04:45,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:04:45,418 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:04:45,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:04:45,419 INFO L82 PathProgramCache]: Analyzing trace with hash 312623789, now seen corresponding path program 1 times [2020-08-21 14:04:45,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:04:45,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99629594] [2020-08-21 14:04:45,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:04:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:45,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:04:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:45,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:04:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:45,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:04:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:45,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 14:04:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:04:45,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99629594] [2020-08-21 14:04:45,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:04:45,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 14:04:45,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663577439] [2020-08-21 14:04:45,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 14:04:45,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:04:45,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 14:04:45,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:04:45,629 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 6 states. [2020-08-21 14:04:45,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:04:45,894 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-08-21 14:04:45,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 14:04:45,895 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-08-21 14:04:45,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:04:45,899 INFO L225 Difference]: With dead ends: 51 [2020-08-21 14:04:45,899 INFO L226 Difference]: Without dead ends: 40 [2020-08-21 14:04:45,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:04:45,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-21 14:04:45,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-08-21 14:04:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-21 14:04:45,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-08-21 14:04:45,913 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2020-08-21 14:04:45,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:04:45,913 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-08-21 14:04:45,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 14:04:45,914 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-08-21 14:04:45,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 14:04:45,915 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:04:45,915 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, 1, 1] [2020-08-21 14:04:45,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:04:45,916 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:04:45,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:04:45,917 INFO L82 PathProgramCache]: Analyzing trace with hash -409741261, now seen corresponding path program 1 times [2020-08-21 14:04:45,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:04:45,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500108810] [2020-08-21 14:04:45,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:04:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:45,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:04:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:45,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:04:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:46,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:04:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:46,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 14:04:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:04:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:04:46,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500108810] [2020-08-21 14:04:46,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:04:46,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 14:04:46,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194850205] [2020-08-21 14:04:46,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 14:04:46,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:04:46,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 14:04:46,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:04:46,064 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-08-21 14:04:46,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:04:46,269 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-08-21 14:04:46,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 14:04:46,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-08-21 14:04:46,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:04:46,271 INFO L225 Difference]: With dead ends: 55 [2020-08-21 14:04:46,272 INFO L226 Difference]: Without dead ends: 44 [2020-08-21 14:04:46,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:04:46,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-21 14:04:46,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-08-21 14:04:46,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-21 14:04:46,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-08-21 14:04:46,282 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2020-08-21 14:04:46,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:04:46,282 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-08-21 14:04:46,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 14:04:46,282 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-08-21 14:04:46,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 14:04:46,284 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:04:46,284 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, 1, 1] [2020-08-21 14:04:46,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:04:46,284 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:04:46,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:04:46,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1097810548, now seen corresponding path program 1 times [2020-08-21 14:04:46,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:04:46,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183150587] [2020-08-21 14:04:46,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:04:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:04:46,307 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:04:46,307 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:04:46,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:04:46,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:04:46 BoogieIcfgContainer [2020-08-21 14:04:46,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:04:46,333 INFO L168 Benchmark]: Toolchain (without parser) took 2432.58 ms. Allocated memory was 146.8 MB in the beginning and 235.9 MB in the end (delta: 89.1 MB). Free memory was 101.3 MB in the beginning and 152.1 MB in the end (delta: -50.8 MB). Peak memory consumption was 38.3 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:46,334 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 14:04:46,334 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.59 ms. Allocated memory is still 146.8 MB. Free memory was 101.1 MB in the beginning and 90.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:46,335 INFO L168 Benchmark]: Boogie Preprocessor took 134.64 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 90.3 MB in the beginning and 180.6 MB in the end (delta: -90.4 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:46,336 INFO L168 Benchmark]: RCFGBuilder took 355.00 ms. Allocated memory is still 203.4 MB. Free memory was 180.6 MB in the beginning and 162.5 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:46,337 INFO L168 Benchmark]: TraceAbstraction took 1677.26 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 161.9 MB in the beginning and 152.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. [2020-08-21 14:04:46,341 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.59 ms. Allocated memory is still 146.8 MB. Free memory was 101.1 MB in the beginning and 90.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.64 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 90.3 MB in the beginning and 180.6 MB in the end (delta: -90.4 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 355.00 ms. Allocated memory is still 203.4 MB. Free memory was 180.6 MB in the beginning and 162.5 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1677.26 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 161.9 MB in the beginning and 152.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 54. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] float y = 0.0f / 0.0f; [L56] CALL, EXPR fmin_float(x, y) [L35] CALL, EXPR __fpclassify_float(x) [L12] __uint32_t w; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L20] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L22-L23] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L25-L26] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L28] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L31] return 0; [L35] RET, EXPR __fpclassify_float(x) [L35] COND TRUE __fpclassify_float(x) == 0 [L36] return y; [L56] RET, EXPR fmin_float(x, y) [L56] float res = fmin_float(x, y); [L58] CALL, EXPR isnan_float(res) [L44] return x != x; [L58] RET, EXPR isnan_float(res) [L58] COND TRUE !isnan_float(res) [L59] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 108 SDslu, 43 SDs, 0 SdLazy, 255 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 5222 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...