/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:25:05,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:25:05,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:25:05,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 00:25:05,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:25:05,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:25:05,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:25:05,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:25:05,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:25:05,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:25:05,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:25:05,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:25:05,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:25:05,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:25:05,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:25:05,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:25:05,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 00:25:05,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:25:05,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:25:05,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:25:05,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:25:05,803 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:25:05,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:25:05,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:25:05,827 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:25:05,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:25:05,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:25:05,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:25:05,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:25:05,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:25:05,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:25:05,830 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:25:05,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:25:05,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:25:05,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:25:05,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:25:05,831 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:25:05,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:25:05,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:25:05,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:25:05,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:25:05,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:25:05,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:25:05,833 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:25:06,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:25:06,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:25:06,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:25:06,310 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:25:06,312 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:25:06,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c [2020-11-07 00:25:06,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1f2161cd/df970d16aee442738ed757c17c78bcd4/FLAGe9bb82677 [2020-11-07 00:25:07,140 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:25:07,141 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c [2020-11-07 00:25:07,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1f2161cd/df970d16aee442738ed757c17c78bcd4/FLAGe9bb82677 [2020-11-07 00:25:07,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1f2161cd/df970d16aee442738ed757c17c78bcd4 [2020-11-07 00:25:07,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:25:07,536 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:25:07,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:25:07,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:25:07,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:25:07,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:25:07" (1/1) ... [2020-11-07 00:25:07,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70f5a54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:07, skipping insertion in model container [2020-11-07 00:25:07,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:25:07" (1/1) ... [2020-11-07 00:25:07,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:25:07,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:25:07,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:25:07,775 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:25:07,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:25:07,821 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:25:07,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:07 WrapperNode [2020-11-07 00:25:07,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:25:07,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:25:07,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:25:07,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:25:07,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:07" (1/1) ... [2020-11-07 00:25:07,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:07" (1/1) ... [2020-11-07 00:25:07,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:07" (1/1) ... [2020-11-07 00:25:07,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:07" (1/1) ... [2020-11-07 00:25:07,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:07" (1/1) ... [2020-11-07 00:25:07,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:07" (1/1) ... [2020-11-07 00:25:07,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:07" (1/1) ... [2020-11-07 00:25:07,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:25:07,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:25:07,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:25:07,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:25:07,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-11-07 00:25:07,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:25:07,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:25:07,961 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:25:07,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-11-07 00:25:07,961 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-11-07 00:25:07,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-11-07 00:25:07,962 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:25:07,962 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:25:07,962 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:25:07,962 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:25:07,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:25:07,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-11-07 00:25:07,963 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-11-07 00:25:07,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 00:25:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:25:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:25:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-11-07 00:25:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-11-07 00:25:07,965 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:25:07,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:25:07,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:25:07,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:25:07,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:25:07,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 00:25:08,417 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:25:08,418 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-07 00:25:08,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:25:08 BoogieIcfgContainer [2020-11-07 00:25:08,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:25:08,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:25:08,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:25:08,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:25:08,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:25:07" (1/3) ... [2020-11-07 00:25:08,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501fdf9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:25:08, skipping insertion in model container [2020-11-07 00:25:08,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:07" (2/3) ... [2020-11-07 00:25:08,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501fdf9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:25:08, skipping insertion in model container [2020-11-07 00:25:08,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:25:08" (3/3) ... [2020-11-07 00:25:08,429 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2020-11-07 00:25:08,446 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:25:08,449 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:25:08,462 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:25:08,489 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:25:08,489 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:25:08,489 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:25:08,490 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:25:08,490 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:25:08,490 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:25:08,490 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:25:08,490 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:25:08,514 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states. [2020-11-07 00:25:08,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-07 00:25:08,530 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:08,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:25:08,531 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:08,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:08,546 INFO L82 PathProgramCache]: Analyzing trace with hash 3196274, now seen corresponding path program 1 times [2020-11-07 00:25:08,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:08,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032475258] [2020-11-07 00:25:08,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:08,631 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:08,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:08,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:25:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:08,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:25:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:25:08,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032475258] [2020-11-07 00:25:08,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:08,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:25:08,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116999233] [2020-11-07 00:25:08,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:25:08,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:08,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:25:08,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:25:08,959 INFO L87 Difference]: Start difference. First operand 97 states. Second operand 4 states. [2020-11-07 00:25:09,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:09,291 INFO L93 Difference]: Finished difference Result 173 states and 202 transitions. [2020-11-07 00:25:09,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:25:09,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-11-07 00:25:09,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:09,304 INFO L225 Difference]: With dead ends: 173 [2020-11-07 00:25:09,304 INFO L226 Difference]: Without dead ends: 87 [2020-11-07 00:25:09,309 INFO L677 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 [2020-11-07 00:25:09,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-07 00:25:09,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-11-07 00:25:09,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-07 00:25:09,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2020-11-07 00:25:09,368 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 40 [2020-11-07 00:25:09,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:09,369 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2020-11-07 00:25:09,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:25:09,369 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2020-11-07 00:25:09,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-07 00:25:09,372 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:09,372 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:25:09,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:25:09,373 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:09,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:09,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1077827938, now seen corresponding path program 1 times [2020-11-07 00:25:09,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:09,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477276829] [2020-11-07 00:25:09,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:09,379 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:09,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:09,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:25:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:09,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:25:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:09,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:25:09,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477276829] [2020-11-07 00:25:09,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:09,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 00:25:09,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038980158] [2020-11-07 00:25:09,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 00:25:09,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:09,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 00:25:09,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:25:09,660 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand 6 states. [2020-11-07 00:25:09,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:09,936 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-11-07 00:25:09,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 00:25:09,937 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-11-07 00:25:09,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:09,941 INFO L225 Difference]: With dead ends: 124 [2020-11-07 00:25:09,941 INFO L226 Difference]: Without dead ends: 92 [2020-11-07 00:25:09,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-07 00:25:09,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-07 00:25:09,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-11-07 00:25:09,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-07 00:25:09,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-11-07 00:25:09,963 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 49 [2020-11-07 00:25:09,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:09,963 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-11-07 00:25:09,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 00:25:09,964 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-11-07 00:25:09,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-07 00:25:09,966 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:09,966 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:25:09,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:25:09,966 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:09,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:09,967 INFO L82 PathProgramCache]: Analyzing trace with hash -449859217, now seen corresponding path program 1 times [2020-11-07 00:25:09,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:09,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264834270] [2020-11-07 00:25:09,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:09,974 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:10,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:10,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:25:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:10,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:25:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:25:10,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264834270] [2020-11-07 00:25:10,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:10,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 00:25:10,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780565021] [2020-11-07 00:25:10,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 00:25:10,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:10,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 00:25:10,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:25:10,127 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-11-07 00:25:10,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:10,413 INFO L93 Difference]: Finished difference Result 128 states and 139 transitions. [2020-11-07 00:25:10,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 00:25:10,413 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-11-07 00:25:10,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:10,415 INFO L225 Difference]: With dead ends: 128 [2020-11-07 00:25:10,415 INFO L226 Difference]: Without dead ends: 96 [2020-11-07 00:25:10,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-07 00:25:10,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-07 00:25:10,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-11-07 00:25:10,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-07 00:25:10,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-11-07 00:25:10,431 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 52 [2020-11-07 00:25:10,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:10,432 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-11-07 00:25:10,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 00:25:10,432 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-11-07 00:25:10,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-07 00:25:10,434 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:10,434 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:25:10,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:25:10,435 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:10,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:10,436 INFO L82 PathProgramCache]: Analyzing trace with hash 162019631, now seen corresponding path program 1 times [2020-11-07 00:25:10,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:10,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588238529] [2020-11-07 00:25:10,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:10,440 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:25:10,467 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:25:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:25:10,489 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:25:10,534 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:25:10,535 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:25:10,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 00:25:10,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:25:10 BoogieIcfgContainer [2020-11-07 00:25:10,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:25:10,566 INFO L168 Benchmark]: Toolchain (without parser) took 3032.95 ms. Allocated memory was 151.0 MB in the beginning and 200.3 MB in the end (delta: 49.3 MB). Free memory was 126.2 MB in the beginning and 156.5 MB in the end (delta: -30.3 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:10,568 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 128.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:25:10,569 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.78 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 115.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:10,571 INFO L168 Benchmark]: Boogie Preprocessor took 46.84 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:10,573 INFO L168 Benchmark]: RCFGBuilder took 549.69 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 125.0 MB in the end (delta: -11.6 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:10,577 INFO L168 Benchmark]: TraceAbstraction took 2140.17 ms. Allocated memory was 151.0 MB in the beginning and 200.3 MB in the end (delta: 49.3 MB). Free memory was 124.5 MB in the beginning and 156.5 MB in the end (delta: -31.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:10,587 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 128.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 278.78 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 115.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.84 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 549.69 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 125.0 MB in the end (delta: -11.6 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2140.17 ms. Allocated memory was 151.0 MB in the beginning and 200.3 MB in the end (delta: 49.3 MB). Free memory was 124.5 MB in the beginning and 156.5 MB in the end (delta: -31.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 71, overapproximation of someUnaryFLOAToperation at line 67. Possible FailurePath: [L66] float x = 0.0f; [L67] float y = -0.0f; [L68] CALL, EXPR fmin_float(x, y) [L38] CALL, EXPR __fpclassify_float(x) [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] RET, EXPR __fpclassify_float(x) [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L68] RET, EXPR fmin_float(x, y) [L68] float res = fmin_float(x, y); [L71] EXPR res == -0.0f && __signbit_float(res) == 1 [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L72] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1232a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 97 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 285 SDtfs, 59 SDslu, 511 SDs, 0 SdLazy, 383 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...