/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 21:59:09,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 21:59:09,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 21:59:09,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 21:59:09,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 21:59:09,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 21:59:09,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 21:59:09,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 21:59:09,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 21:59:09,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 21:59:09,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 21:59:09,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 21:59:09,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 21:59:09,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 21:59:09,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 21:59:09,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 21:59:09,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 21:59:09,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 21:59:09,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 21:59:09,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 21:59:09,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 21:59:09,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 21:59:09,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 21:59:09,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 21:59:09,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 21:59:10,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 21:59:10,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 21:59:10,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 21:59:10,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 21:59:10,053 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 21:59:10,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 21:59:10,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 21:59:10,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 21:59:10,055 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 21:59:10,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 21:59:10,056 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 21:59:10,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 21:59:10,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 21:59:10,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 21:59:10,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 21:59:10,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 21:59:10,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 21:59:10,057 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 21:59:10,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 21:59:10,058 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 21:59:10,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 21:59:10,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 21:59:10,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 21:59:10,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 21:59:10,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 21:59:10,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:59:10,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 21:59:10,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 21:59:10,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 21:59:10,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 21:59:10,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 21:59:10,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 21:59:10,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 21:59:10,061 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 21:59:10,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 21:59:10,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 21:59:10,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 21:59:10,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 21:59:10,488 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 21:59:10,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2020-11-06 21:59:10,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a303c852a/c90cce21e6db4811ba6bc574a8044fb8/FLAGd2841b809 [2020-11-06 21:59:11,210 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 21:59:11,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2020-11-06 21:59:11,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a303c852a/c90cce21e6db4811ba6bc574a8044fb8/FLAGd2841b809 [2020-11-06 21:59:11,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a303c852a/c90cce21e6db4811ba6bc574a8044fb8 [2020-11-06 21:59:11,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 21:59:11,564 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 21:59:11,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 21:59:11,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 21:59:11,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 21:59:11,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:11" (1/1) ... [2020-11-06 21:59:11,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@255762f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11, skipping insertion in model container [2020-11-06 21:59:11,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:11" (1/1) ... [2020-11-06 21:59:11,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 21:59:11,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 21:59:11,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:59:11,779 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 21:59:11,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:59:11,827 INFO L208 MainTranslator]: Completed translation [2020-11-06 21:59:11,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11 WrapperNode [2020-11-06 21:59:11,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 21:59:11,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 21:59:11,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 21:59:11,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 21:59:11,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11" (1/1) ... [2020-11-06 21:59:11,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11" (1/1) ... [2020-11-06 21:59:11,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11" (1/1) ... [2020-11-06 21:59:11,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11" (1/1) ... [2020-11-06 21:59:11,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11" (1/1) ... [2020-11-06 21:59:11,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11" (1/1) ... [2020-11-06 21:59:11,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11" (1/1) ... [2020-11-06 21:59:11,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 21:59:11,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 21:59:11,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 21:59:11,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 21:59:11,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11" (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 [2020-11-06 21:59:12,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 21:59:12,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 21:59:12,009 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 21:59:12,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 21:59:12,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 21:59:12,010 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 21:59:12,010 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 21:59:12,011 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 21:59:12,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 21:59:12,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-11-06 21:59:12,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 21:59:12,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 21:59:12,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 21:59:12,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 21:59:12,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 21:59:12,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 21:59:12,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 21:59:12,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 21:59:12,679 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 21:59:12,679 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 21:59:12,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:12 BoogieIcfgContainer [2020-11-06 21:59:12,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 21:59:12,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 21:59:12,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 21:59:12,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 21:59:12,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:59:11" (1/3) ... [2020-11-06 21:59:12,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442f1a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:12, skipping insertion in model container [2020-11-06 21:59:12,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:11" (2/3) ... [2020-11-06 21:59:12,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442f1a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:12, skipping insertion in model container [2020-11-06 21:59:12,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:12" (3/3) ... [2020-11-06 21:59:12,695 INFO L111 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2020-11-06 21:59:12,711 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 21:59:12,716 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 21:59:12,729 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 21:59:12,774 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 21:59:12,774 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 21:59:12,774 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 21:59:12,774 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 21:59:12,774 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 21:59:12,775 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 21:59:12,775 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 21:59:12,775 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 21:59:12,793 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-11-06 21:59:12,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-06 21:59:12,799 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:59:12,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:59:12,800 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:59:12,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:59:12,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1511546603, now seen corresponding path program 1 times [2020-11-06 21:59:12,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:59:12,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899937842] [2020-11-06 21:59:12,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:59:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:13,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:59:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:59:13,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899937842] [2020-11-06 21:59:13,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:59:13,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 21:59:13,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560213463] [2020-11-06 21:59:13,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 21:59:13,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:59:13,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 21:59:13,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 21:59:13,110 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-11-06 21:59:13,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:59:13,195 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2020-11-06 21:59:13,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 21:59:13,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-06 21:59:13,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:59:13,207 INFO L225 Difference]: With dead ends: 44 [2020-11-06 21:59:13,207 INFO L226 Difference]: Without dead ends: 23 [2020-11-06 21:59:13,210 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 [2020-11-06 21:59:13,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-06 21:59:13,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-06 21:59:13,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-06 21:59:13,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2020-11-06 21:59:13,257 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 12 [2020-11-06 21:59:13,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:59:13,258 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2020-11-06 21:59:13,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 21:59:13,258 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2020-11-06 21:59:13,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-06 21:59:13,259 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:59:13,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:59:13,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 21:59:13,260 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:59:13,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:59:13,261 INFO L82 PathProgramCache]: Analyzing trace with hash 951155029, now seen corresponding path program 1 times [2020-11-06 21:59:13,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:59:13,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611118310] [2020-11-06 21:59:13,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:59:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:13,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:59:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:59:13,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611118310] [2020-11-06 21:59:13,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:59:13,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 21:59:13,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464126188] [2020-11-06 21:59:13,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 21:59:13,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:59:13,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 21:59:13,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 21:59:13,414 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand 4 states. [2020-11-06 21:59:13,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:59:13,675 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2020-11-06 21:59:13,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 21:59:13,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-06 21:59:13,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:59:13,678 INFO L225 Difference]: With dead ends: 31 [2020-11-06 21:59:13,678 INFO L226 Difference]: Without dead ends: 25 [2020-11-06 21:59:13,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 21:59:13,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-06 21:59:13,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-11-06 21:59:13,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-06 21:59:13,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2020-11-06 21:59:13,689 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 12 [2020-11-06 21:59:13,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:59:13,689 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2020-11-06 21:59:13,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 21:59:13,689 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2020-11-06 21:59:13,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-06 21:59:13,690 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:59:13,690 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] [2020-11-06 21:59:13,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 21:59:13,691 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:59:13,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:59:13,691 INFO L82 PathProgramCache]: Analyzing trace with hash -310557545, now seen corresponding path program 1 times [2020-11-06 21:59:13,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:59:13,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366473243] [2020-11-06 21:59:13,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:59:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:13,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:59:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:59:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:59:13,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366473243] [2020-11-06 21:59:13,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:59:13,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 21:59:13,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9991987] [2020-11-06 21:59:13,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 21:59:13,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:59:13,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 21:59:13,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 21:59:13,849 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 4 states. [2020-11-06 21:59:14,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:59:14,113 INFO L93 Difference]: Finished difference Result 53 states and 84 transitions. [2020-11-06 21:59:14,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 21:59:14,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-06 21:59:14,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:59:14,116 INFO L225 Difference]: With dead ends: 53 [2020-11-06 21:59:14,116 INFO L226 Difference]: Without dead ends: 36 [2020-11-06 21:59:14,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 21:59:14,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-06 21:59:14,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-11-06 21:59:14,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-06 21:59:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2020-11-06 21:59:14,127 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 23 [2020-11-06 21:59:14,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:59:14,128 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2020-11-06 21:59:14,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 21:59:14,128 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2020-11-06 21:59:14,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-06 21:59:14,129 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:59:14,129 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] [2020-11-06 21:59:14,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 21:59:14,130 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:59:14,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:59:14,130 INFO L82 PathProgramCache]: Analyzing trace with hash -167075749, now seen corresponding path program 1 times [2020-11-06 21:59:14,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:59:14,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225450636] [2020-11-06 21:59:14,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:59:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:59:14,170 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:59:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:59:14,197 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:59:14,222 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 21:59:14,222 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 21:59:14,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 21:59:14,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:59:14 BoogieIcfgContainer [2020-11-06 21:59:14,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 21:59:14,264 INFO L168 Benchmark]: Toolchain (without parser) took 2701.78 ms. Allocated memory is still 155.2 MB. Free memory was 110.7 MB in the beginning and 91.4 MB in the end (delta: 19.3 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. [2020-11-06 21:59:14,265 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 155.2 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 21:59:14,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.27 ms. Allocated memory is still 155.2 MB. Free memory was 109.8 MB in the beginning and 99.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-06 21:59:14,268 INFO L168 Benchmark]: Boogie Preprocessor took 91.58 ms. Allocated memory is still 155.2 MB. Free memory was 99.7 MB in the beginning and 138.7 MB in the end (delta: -39.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-11-06 21:59:14,269 INFO L168 Benchmark]: RCFGBuilder took 759.73 ms. Allocated memory is still 155.2 MB. Free memory was 138.5 MB in the beginning and 122.2 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-11-06 21:59:14,271 INFO L168 Benchmark]: TraceAbstraction took 1573.28 ms. Allocated memory is still 155.2 MB. Free memory was 121.7 MB in the beginning and 91.4 MB in the end (delta: 30.3 MB). Peak memory consumption was 31.1 MB. Max. memory is 8.0 GB. [2020-11-06 21:59:14,280 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 155.2 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 262.27 ms. Allocated memory is still 155.2 MB. Free memory was 109.8 MB in the beginning and 99.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 91.58 ms. Allocated memory is still 155.2 MB. Free memory was 99.7 MB in the beginning and 138.7 MB in the end (delta: -39.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 759.73 ms. Allocated memory is still 155.2 MB. Free memory was 138.5 MB in the beginning and 122.2 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1573.28 ms. Allocated memory is still 155.2 MB. Free memory was 121.7 MB in the beginning and 91.4 MB in the end (delta: 30.3 MB). Peak memory consumption was 31.1 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 VAL [x=0, y=4294967295] [L18] COND FALSE !(y % 2 == 0) [L19] x += 2 VAL [x=2, y=4294967295] [L21] COND FALSE !(y % 2 == 0) [L22] x -= 2 VAL [x=0, y=4294967295] [L24] COND FALSE !(y % 2 == 0) [L25] x += 2 VAL [x=2, y=4294967295] [L27] COND FALSE !(y % 2 == 0) [L28] x -= 2 VAL [x=0, y=4294967295] [L30] COND FALSE !(y % 2 == 0) [L31] x += 2 VAL [x=2, y=4294967295] [L33] COND FALSE !(y % 2 == 0) [L34] x -= 4 VAL [x=4294967294, y=4294967295] [L36] COND FALSE !(y % 2 == 0) [L37] x += 4 VAL [x=2, y=4294967295] [L39] COND FALSE !(y % 2 == 0) [L40] x += 2 VAL [x=4, y=4294967295] [L42] COND FALSE !(y % 2 == 0) [L43] x -= 4 VAL [x=0, y=4294967295] [L45] COND FALSE !(y % 2 == 0) [L46] x -= 4 VAL [x=4294967292, y=4294967295] [L17] COND FALSE !(x < 99) VAL [x=4294967292, y=4294967295] [L49] CALL __VERIFIER_assert((x % 2) == (y % 2)) VAL [\old(cond)=0] [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] CALL reach_error() [L3] __assert_fail("0", "diamond_2-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 90 SDtfs, 104 SDslu, 19 SDs, 0 SdLazy, 64 SolverSat, 30 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, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 2222 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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 proved your program to be incorrect! Received shutdown request...