/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/bitvector-loops/diamond_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:25:57,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:25:57,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:25:57,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:25:57,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:25:57,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:25:57,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:25:57,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:25:57,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:25:57,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:25:57,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:25:57,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:25:57,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:25:57,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:25:57,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:25:57,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:25:57,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:25:57,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:25:57,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:25:57,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:25:57,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:25:57,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:25:57,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:25:57,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:25:57,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:25:57,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:25:57,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:25:57,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:25:57,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:25:57,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:25:57,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:25:57,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:25:57,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:25:57,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:25:57,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:25:57,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:25:57,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:25:57,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:25:57,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:25:57,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:25:57,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:25:57,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:25:57,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:25:57,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:25:57,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:25:57,460 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:25:57,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:25:57,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:25:57,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:25:57,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:25:57,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:25:57,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:25:57,461 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:25:57,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:25:57,462 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:25:57,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:25:57,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:25:57,462 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:25:57,463 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:25:57,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:25:57,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:25:57,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:25:57,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:25:57,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:25:57,464 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:25:57,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:25:57,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:25:57,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:25:57,890 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:25:57,891 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:25:57,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2020-10-23 20:25:57,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41284dab6/4725fa79f321422f9f4127b205efefa7/FLAG04f5865be [2020-10-23 20:25:58,679 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:25:58,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2020-10-23 20:25:58,688 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41284dab6/4725fa79f321422f9f4127b205efefa7/FLAG04f5865be [2020-10-23 20:25:59,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41284dab6/4725fa79f321422f9f4127b205efefa7 [2020-10-23 20:25:59,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:25:59,024 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:25:59,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:59,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:25:59,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:25:59,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:59" (1/1) ... [2020-10-23 20:25:59,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a16208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:59, skipping insertion in model container [2020-10-23 20:25:59,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:59" (1/1) ... [2020-10-23 20:25:59,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:25:59,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:25:59,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:59,249 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:25:59,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:59,292 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:25:59,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:59 WrapperNode [2020-10-23 20:25:59,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:59,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:25:59,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:25:59,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:25:59,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:59" (1/1) ... [2020-10-23 20:25:59,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:59" (1/1) ... [2020-10-23 20:25:59,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:59" (1/1) ... [2020-10-23 20:25:59,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:59" (1/1) ... [2020-10-23 20:25:59,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:59" (1/1) ... [2020-10-23 20:25:59,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:59" (1/1) ... [2020-10-23 20:25:59,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:59" (1/1) ... [2020-10-23 20:25:59,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:25:59,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:25:59,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:25:59,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:25:59,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:59" (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 [2020-10-23 20:25:59,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:25:59,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:25:59,424 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:25:59,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 20:25:59,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:25:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:25:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:25:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:25:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:25:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-23 20:25:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 20:25:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:25:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:25:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:25:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:25:59,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:25:59,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:25:59,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:25:59,883 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:25:59,884 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 20:25:59,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:59 BoogieIcfgContainer [2020-10-23 20:25:59,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:25:59,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:25:59,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:25:59,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:25:59,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:25:59" (1/3) ... [2020-10-23 20:25:59,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc6358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:59, skipping insertion in model container [2020-10-23 20:25:59,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:59" (2/3) ... [2020-10-23 20:25:59,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc6358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:59, skipping insertion in model container [2020-10-23 20:25:59,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:59" (3/3) ... [2020-10-23 20:25:59,897 INFO L111 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2020-10-23 20:25:59,915 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:25:59,922 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:25:59,938 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:25:59,969 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:25:59,969 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:25:59,969 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:25:59,969 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:25:59,970 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:25:59,970 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:25:59,970 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:25:59,970 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:26:00,003 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-10-23 20:26:00,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-23 20:26:00,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:00,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:00,021 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:00,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:00,036 INFO L82 PathProgramCache]: Analyzing trace with hash 2057954194, now seen corresponding path program 1 times [2020-10-23 20:26:00,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:00,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568859563] [2020-10-23 20:26:00,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:00,152 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:00,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:26:00,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568859563] [2020-10-23 20:26:00,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:00,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 20:26:00,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378412718] [2020-10-23 20:26:00,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 20:26:00,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:00,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 20:26:00,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:26:00,442 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 3 states. [2020-10-23 20:26:00,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:00,612 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2020-10-23 20:26:00,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 20:26:00,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-23 20:26:00,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:00,624 INFO L225 Difference]: With dead ends: 75 [2020-10-23 20:26:00,624 INFO L226 Difference]: Without dead ends: 54 [2020-10-23 20:26:00,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:26:00,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-23 20:26:00,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-23 20:26:00,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-23 20:26:00,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-10-23 20:26:00,734 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 21 [2020-10-23 20:26:00,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:00,737 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-10-23 20:26:00,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 20:26:00,737 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-10-23 20:26:00,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-23 20:26:00,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:00,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:00,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:26:00,741 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:00,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:00,743 INFO L82 PathProgramCache]: Analyzing trace with hash -404152792, now seen corresponding path program 1 times [2020-10-23 20:26:00,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:00,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327622972] [2020-10-23 20:26:00,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:00,757 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:00,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:00,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:26:00,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327622972] [2020-10-23 20:26:00,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:00,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:26:00,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367352904] [2020-10-23 20:26:00,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:26:00,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:00,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:26:00,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:26:00,943 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 4 states. [2020-10-23 20:26:01,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:01,180 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-23 20:26:01,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:26:01,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-23 20:26:01,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:01,182 INFO L225 Difference]: With dead ends: 65 [2020-10-23 20:26:01,183 INFO L226 Difference]: Without dead ends: 59 [2020-10-23 20:26:01,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:26:01,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-23 20:26:01,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2020-10-23 20:26:01,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-23 20:26:01,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-23 20:26:01,202 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 21 [2020-10-23 20:26:01,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:01,203 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-23 20:26:01,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:26:01,203 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-23 20:26:01,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-23 20:26:01,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:01,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:01,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:26:01,206 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:01,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:01,207 INFO L82 PathProgramCache]: Analyzing trace with hash 507958482, now seen corresponding path program 1 times [2020-10-23 20:26:01,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:01,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041745786] [2020-10-23 20:26:01,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:01,229 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:26:01,231 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:01,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:26:01,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041745786] [2020-10-23 20:26:01,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:01,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:26:01,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080168543] [2020-10-23 20:26:01,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:26:01,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:01,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:26:01,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:26:01,332 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 4 states. [2020-10-23 20:26:01,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:01,565 INFO L93 Difference]: Finished difference Result 106 states and 137 transitions. [2020-10-23 20:26:01,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:26:01,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-23 20:26:01,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:01,568 INFO L225 Difference]: With dead ends: 106 [2020-10-23 20:26:01,568 INFO L226 Difference]: Without dead ends: 67 [2020-10-23 20:26:01,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:26:01,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-23 20:26:01,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-10-23 20:26:01,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-23 20:26:01,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2020-10-23 20:26:01,588 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 42 [2020-10-23 20:26:01,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:01,588 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2020-10-23 20:26:01,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:26:01,588 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2020-10-23 20:26:01,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-23 20:26:01,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:01,590 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] [2020-10-23 20:26:01,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:26:01,591 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:01,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:01,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1929474098, now seen corresponding path program 1 times [2020-10-23 20:26:01,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:01,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324090647] [2020-10-23 20:26:01,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:01,825 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-10-23 20:26:01,827 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:26:01,829 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:26:01,866 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:26:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:26:01,914 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:26:01,944 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:26:01,944 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:26:01,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:26:01,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:26:01 BoogieIcfgContainer [2020-10-23 20:26:01,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:26:01,966 INFO L168 Benchmark]: Toolchain (without parser) took 2947.61 ms. Allocated memory was 160.4 MB in the beginning and 202.4 MB in the end (delta: 41.9 MB). Free memory was 136.4 MB in the beginning and 110.7 MB in the end (delta: 25.7 MB). Peak memory consumption was 69.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:26:01,967 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 160.4 MB. Free memory is still 133.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:26:01,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.81 ms. Allocated memory is still 160.4 MB. Free memory was 135.7 MB in the beginning and 125.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:26:01,968 INFO L168 Benchmark]: Boogie Preprocessor took 43.24 ms. Allocated memory is still 160.4 MB. Free memory was 125.9 MB in the beginning and 124.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:26:01,969 INFO L168 Benchmark]: RCFGBuilder took 548.20 ms. Allocated memory is still 160.4 MB. Free memory was 124.2 MB in the beginning and 140.8 MB in the end (delta: -16.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:26:01,971 INFO L168 Benchmark]: TraceAbstraction took 2075.29 ms. Allocated memory was 160.4 MB in the beginning and 202.4 MB in the end (delta: 41.9 MB). Free memory was 140.3 MB in the beginning and 110.7 MB in the end (delta: 29.6 MB). Peak memory consumption was 73.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:26:01,975 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 160.4 MB. Free memory is still 133.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 266.81 ms. Allocated memory is still 160.4 MB. Free memory was 135.7 MB in the beginning and 125.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.24 ms. Allocated memory is still 160.4 MB. Free memory was 125.9 MB in the beginning and 124.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 548.20 ms. Allocated memory is still 160.4 MB. Free memory was 124.2 MB in the beginning and 140.8 MB in the end (delta: -16.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2075.29 ms. Allocated memory was 160.4 MB in the beginning and 202.4 MB in the end (delta: 41.9 MB). Free memory was 140.3 MB in the beginning and 110.7 MB in the end (delta: 29.6 MB). Peak memory consumption was 73.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int x = 0; [L15] unsigned int y = __VERIFIER_nondet_uint(); [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L19] x += 2 [L21] COND FALSE !(y % 2 == 0) [L22] x -= 2 [L24] COND FALSE !(y % 2 == 0) [L25] x += 2 [L27] COND FALSE !(y % 2 == 0) [L28] x -= 2 [L30] COND FALSE !(y % 2 == 0) [L31] x += 2 [L33] COND FALSE !(y % 2 == 0) [L34] x -= 4 [L36] COND FALSE !(y % 2 == 0) [L37] x += 4 [L39] COND FALSE !(y % 2 == 0) [L40] x += 2 [L42] COND FALSE !(y % 2 == 0) [L43] x -= 4 [L45] COND FALSE !(y % 2 == 0) [L46] x -= 4 [L17] COND FALSE !(x < 99) [L49] CALL __VERIFIER_assert((x % 2) == (y % 2)) [L7] COND TRUE !(cond) [L8] CALL reach_error() [L3] __assert_fail("0", "diamond_2-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 186 SDtfs, 192 SDslu, 38 SDs, 0 SdLazy, 113 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 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 proved your program to be incorrect! Received shutdown request...