/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 11:35:22,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 11:35:22,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 11:35:22,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 11:35:22,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 11:35:22,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 11:35:22,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 11:35:22,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 11:35:22,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 11:35:22,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 11:35:22,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 11:35:22,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 11:35:22,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 11:35:22,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 11:35:22,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 11:35:22,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 11:35:22,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 11:35:22,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 11:35:22,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 11:35:22,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 11:35:22,414 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-06 11:35:22,437 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 11:35:22,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 11:35:22,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 11:35:22,439 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 11:35:22,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 11:35:22,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 11:35:22,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 11:35:22,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 11:35:22,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 11:35:22,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 11:35:22,441 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 11:35:22,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 11:35:22,441 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 11:35:22,441 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 11:35:22,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 11:35:22,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 11:35:22,442 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 11:35:22,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 11:35:22,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:35:22,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 11:35:22,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 11:35:22,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 11:35:22,442 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 11:35:22,443 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 11:35:22,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 11:35:22,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 11:35:22,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 11:35:22,723 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 11:35:22,724 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 11:35:22,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2021-05-06 11:35:22,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e78809eef/d8ffbd1022bb41329548b7dde6aead3b/FLAG338cc8211 [2021-05-06 11:35:23,066 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 11:35:23,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested9.i [2021-05-06 11:35:23,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e78809eef/d8ffbd1022bb41329548b7dde6aead3b/FLAG338cc8211 [2021-05-06 11:35:23,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e78809eef/d8ffbd1022bb41329548b7dde6aead3b [2021-05-06 11:35:23,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 11:35:23,504 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 11:35:23,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 11:35:23,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 11:35:23,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 11:35:23,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:35:23" (1/1) ... [2021-05-06 11:35:23,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3367b4ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:23, skipping insertion in model container [2021-05-06 11:35:23,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:35:23" (1/1) ... [2021-05-06 11:35:23,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 11:35:23,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 11:35:23,612 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested9.i[893,906] [2021-05-06 11:35:23,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:35:23,625 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 11:35:23,655 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested9.i[893,906] [2021-05-06 11:35:23,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:35:23,690 INFO L208 MainTranslator]: Completed translation [2021-05-06 11:35:23,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:23 WrapperNode [2021-05-06 11:35:23,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 11:35:23,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 11:35:23,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 11:35:23,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 11:35:23,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:23" (1/1) ... [2021-05-06 11:35:23,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:23" (1/1) ... [2021-05-06 11:35:23,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:23" (1/1) ... [2021-05-06 11:35:23,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:23" (1/1) ... [2021-05-06 11:35:23,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:23" (1/1) ... [2021-05-06 11:35:23,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:23" (1/1) ... [2021-05-06 11:35:23,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:23" (1/1) ... [2021-05-06 11:35:23,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 11:35:23,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 11:35:23,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 11:35:23,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 11:35:23,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:23" (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 [2021-05-06 11:35:23,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 11:35:23,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 11:35:23,784 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 11:35:23,784 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 11:35:23,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 11:35:23,785 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 11:35:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 11:35:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 11:35:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 11:35:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 11:35:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 11:35:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 11:35:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 11:35:23,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 11:35:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 11:35:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 11:35:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 11:35:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 11:35:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 11:35:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 11:35:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 11:35:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 11:35:24,064 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 11:35:24,064 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-05-06 11:35:24,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:35:24 BoogieIcfgContainer [2021-05-06 11:35:24,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 11:35:24,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 11:35:24,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 11:35:24,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 11:35:24,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 11:35:23" (1/3) ... [2021-05-06 11:35:24,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51110239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:35:24, skipping insertion in model container [2021-05-06 11:35:24,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:23" (2/3) ... [2021-05-06 11:35:24,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51110239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:35:24, skipping insertion in model container [2021-05-06 11:35:24,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:35:24" (3/3) ... [2021-05-06 11:35:24,070 INFO L111 eAbstractionObserver]: Analyzing ICFG nested9.i [2021-05-06 11:35:24,073 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 11:35:24,075 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 11:35:24,088 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 11:35:24,103 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 11:35:24,103 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 11:35:24,103 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 11:35:24,103 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 11:35:24,103 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 11:35:24,103 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 11:35:24,103 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 11:35:24,103 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 11:35:24,114 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 11:35:24,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-06 11:35:24,133 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:35:24,134 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:35:24,134 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:35:24,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:35:24,138 INFO L82 PathProgramCache]: Analyzing trace with hash -2111647297, now seen corresponding path program 1 times [2021-05-06 11:35:24,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:35:24,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116943025] [2021-05-06 11:35:24,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:35:24,182 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:35:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:24,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:35:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:24,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:35:24,336 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:35:24,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116943025] [2021-05-06 11:35:24,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1116943025] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:35:24,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:35:24,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-06 11:35:24,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619433486] [2021-05-06 11:35:24,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 11:35:24,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:35:24,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 11:35:24,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-06 11:35:24,349 INFO L87 Difference]: Start difference. First operand has 29 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:35:24,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:35:24,707 INFO L93 Difference]: Finished difference Result 67 states and 98 transitions. [2021-05-06 11:35:24,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 11:35:24,708 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-05-06 11:35:24,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:35:24,714 INFO L225 Difference]: With dead ends: 67 [2021-05-06 11:35:24,714 INFO L226 Difference]: Without dead ends: 41 [2021-05-06 11:35:24,717 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 196.8ms TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-05-06 11:35:24,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-06 11:35:24,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2021-05-06 11:35:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 11:35:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2021-05-06 11:35:24,752 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 18 [2021-05-06 11:35:24,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:35:24,752 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2021-05-06 11:35:24,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:35:24,752 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2021-05-06 11:35:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-06 11:35:24,754 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:35:24,754 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:35:24,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 11:35:24,754 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:35:24,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:35:24,756 INFO L82 PathProgramCache]: Analyzing trace with hash 192634036, now seen corresponding path program 1 times [2021-05-06 11:35:24,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:35:24,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761463408] [2021-05-06 11:35:24,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:35:24,814 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 92.0 percent of original size [2021-05-06 11:35:24,826 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:24,842 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:24,865 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-06 11:35:24,872 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-06 11:35:24,909 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 92.0 percent of original size 69 [2021-05-06 11:35:24,926 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 11:35:24,930 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-06 11:35:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:25,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:35:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:35:25,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:35:25,095 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:35:25,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761463408] [2021-05-06 11:35:25,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1761463408] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:35:25,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:35:25,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-06 11:35:25,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792523588] [2021-05-06 11:35:25,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-06 11:35:25,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:35:25,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-06 11:35:25,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-06 11:35:25,097 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:35:25,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:35:25,567 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2021-05-06 11:35:25,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-06 11:35:25,567 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-05-06 11:35:25,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:35:25,568 INFO L225 Difference]: With dead ends: 60 [2021-05-06 11:35:25,568 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 11:35:25,569 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 429.0ms TimeCoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2021-05-06 11:35:25,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 11:35:25,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 11:35:25,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 11:35:25,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 11:35:25,569 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-05-06 11:35:25,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:35:25,570 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 11:35:25,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:35:25,570 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 11:35:25,570 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 11:35:25,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 11:35:25,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 11:35:25,879 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-05-06 11:35:25,879 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-05-06 11:35:25,879 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-05-06 11:35:25,879 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:35:25,879 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__BLAST_NONDET~0 |old(~__BLAST_NONDET~0)|) (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-05-06 11:35:25,879 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:35:25,880 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:35:25,880 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-06 11:35:25,880 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 11:35:25,880 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:35:25,880 INFO L198 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-05-06 11:35:25,880 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-05-06 11:35:25,880 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2021-05-06 11:35:25,880 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-05-06 11:35:25,880 INFO L194 CegarLoopUtils]: At program point L35-2(lines 35 37) the Hoare annotation is: (and (<= (+ main_~i~0 1) main_~n~0) (<= (+ main_~j~0 3) (+ main_~i~0 (* 2 main_~n~0)))) [2021-05-06 11:35:25,880 INFO L194 CegarLoopUtils]: At program point L35-3(lines 35 37) the Hoare annotation is: (<= (+ main_~i~0 1) main_~n~0) [2021-05-06 11:35:25,880 INFO L201 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: true [2021-05-06 11:35:25,880 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 25 40) the Hoare annotation is: true [2021-05-06 11:35:25,880 INFO L194 CegarLoopUtils]: At program point L36-2(lines 36 37) the Hoare annotation is: (and (<= (+ main_~i~0 1) main_~n~0) (<= (+ main_~j~0 3) (+ main_~i~0 (* 2 main_~n~0)))) [2021-05-06 11:35:25,880 INFO L201 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: true [2021-05-06 11:35:25,881 INFO L194 CegarLoopUtils]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 (* 2 main_~n~0)))) (and (<= (+ main_~k~0 4) .cse0) (<= (+ main_~i~0 1) main_~n~0) (<= (+ main_~j~0 3) .cse0))) [2021-05-06 11:35:25,881 INFO L194 CegarLoopUtils]: At program point L37-1(lines 36 37) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 (* 2 main_~n~0)))) (and (<= (+ main_~k~0 4) .cse0) (<= (+ main_~i~0 1) main_~n~0) (<= (+ main_~j~0 3) .cse0))) [2021-05-06 11:35:25,881 INFO L201 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: true [2021-05-06 11:35:25,881 INFO L201 CegarLoopUtils]: At program point L33-1(line 33) the Hoare annotation is: true [2021-05-06 11:35:25,881 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 25 40) the Hoare annotation is: true [2021-05-06 11:35:25,881 INFO L201 CegarLoopUtils]: At program point L38(lines 25 40) the Hoare annotation is: true [2021-05-06 11:35:25,881 INFO L194 CegarLoopUtils]: At program point L34-2(lines 34 37) the Hoare annotation is: (<= (+ main_~i~0 1) main_~n~0) [2021-05-06 11:35:25,881 INFO L201 CegarLoopUtils]: At program point L34-3(lines 34 37) the Hoare annotation is: true [2021-05-06 11:35:25,881 INFO L201 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: true [2021-05-06 11:35:25,881 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 25 40) the Hoare annotation is: true [2021-05-06 11:35:25,881 INFO L194 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-06 11:35:25,881 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-05-06 11:35:25,881 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-06 11:35:25,882 INFO L194 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-06 11:35:25,882 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-06 11:35:25,882 INFO L194 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-06 11:35:25,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 11:35:25 BoogieIcfgContainer [2021-05-06 11:35:25,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 11:35:25,893 INFO L168 Benchmark]: Toolchain (without parser) took 2388.43 ms. Allocated memory was 181.4 MB in the beginning and 218.1 MB in the end (delta: 36.7 MB). Free memory was 147.3 MB in the beginning and 90.6 MB in the end (delta: 56.6 MB). Peak memory consumption was 94.3 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:25,893 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 181.4 MB. Free memory is still 163.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 11:35:25,893 INFO L168 Benchmark]: CACSL2BoogieTranslator took 182.97 ms. Allocated memory is still 181.4 MB. Free memory was 147.0 MB in the beginning and 164.8 MB in the end (delta: -17.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:25,893 INFO L168 Benchmark]: Boogie Preprocessor took 33.47 ms. Allocated memory is still 181.4 MB. Free memory was 164.8 MB in the beginning and 163.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:25,894 INFO L168 Benchmark]: RCFGBuilder took 339.30 ms. Allocated memory is still 181.4 MB. Free memory was 163.2 MB in the beginning and 146.8 MB in the end (delta: 16.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:25,894 INFO L168 Benchmark]: TraceAbstraction took 1825.79 ms. Allocated memory was 181.4 MB in the beginning and 218.1 MB in the end (delta: 36.7 MB). Free memory was 146.0 MB in the beginning and 90.6 MB in the end (delta: 55.4 MB). Peak memory consumption was 92.9 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:25,896 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 181.4 MB. Free memory is still 163.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 182.97 ms. Allocated memory is still 181.4 MB. Free memory was 147.0 MB in the beginning and 164.8 MB in the end (delta: -17.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.47 ms. Allocated memory is still 181.4 MB. Free memory was 164.8 MB in the beginning and 163.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 339.30 ms. Allocated memory is still 181.4 MB. Free memory was 163.2 MB in the beginning and 146.8 MB in the end (delta: 16.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1825.79 ms. Allocated memory was 181.4 MB in the beginning and 218.1 MB in the end (delta: 36.7 MB). Free memory was 146.0 MB in the beginning and 90.6 MB in the end (delta: 55.4 MB). Peak memory consumption was 92.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1469.1ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 25.5ms, AutomataDifference: 847.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 308.1ms, InitialAbstractionConstructionTime: 5.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 39 SDtfs, 109 SDslu, 62 SDs, 0 SdLazy, 314 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 229.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 625.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=1, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 26.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 29 LocationsWithAnnotation, 65 PreInvPairs, 124 NumberOfFragments, 163 HoareAnnotationTreeSize, 65 FomulaSimplifications, 2385 FormulaSimplificationTreeSizeReduction, 96.1ms HoareSimplificationTime, 29 FomulaSimplificationsInter, 846 FormulaSimplificationTreeSizeReductionInter, 201.6ms HoareSimplificationTimeInter, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: i + 1 <= n && j + 3 <= i + 2 * n - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: i + 1 <= n - ProcedureContractResult [Line: 25]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! Received shutdown request...