/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:10:58,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:10:58,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:10:58,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:10:58,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:10:58,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:10:58,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:10:58,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:10:58,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:10:58,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:10:58,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:10:58,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:10:58,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:10:58,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:10:58,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:10:58,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:10:58,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:10:58,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:10:58,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:10:58,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:10:58,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:10:58,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:10:58,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:10:58,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:10:58,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:10:58,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:10:58,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:10:58,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:10:58,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:10:58,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:10:58,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:10:58,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:10:58,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:10:58,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:10:58,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:10:58,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:10:58,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:10:58,489 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:10:58,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:10:58,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:10:58,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:10:58,495 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:10:58,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:10:58,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:10:58,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:10:58,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:10:58,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:10:58,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:10:58,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:10:58,496 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:10:58,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:10:58,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:10:58,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:10:58,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:10:58,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:10:58,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:10:58,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:10:58,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:10:58,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:10:58,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:10:58,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:10:58,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:10:58,500 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:10:58,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:10:58,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:10:58,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:10:58,907 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:10:58,907 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:10:58,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i [2021-01-06 17:10:58,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/63673cda1/9cc3e340e3d043409d0ab0a4f9b8dfd5/FLAG4920053b1 [2021-01-06 17:10:59,616 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:10:59,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i [2021-01-06 17:10:59,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/63673cda1/9cc3e340e3d043409d0ab0a4f9b8dfd5/FLAG4920053b1 [2021-01-06 17:10:59,954 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/63673cda1/9cc3e340e3d043409d0ab0a4f9b8dfd5 [2021-01-06 17:10:59,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:10:59,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:10:59,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:10:59,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:10:59,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:10:59,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:10:59" (1/1) ... [2021-01-06 17:10:59,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@757e14df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:59, skipping insertion in model container [2021-01-06 17:10:59,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:10:59" (1/1) ... [2021-01-06 17:10:59,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:10:59,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:11:00,141 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i[872,885] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-06 17:11:00,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:11:00,163 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:11:00,178 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i[872,885] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-06 17:11:00,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:11:00,197 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:11:00,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:00 WrapperNode [2021-01-06 17:11:00,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:11:00,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:11:00,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:11:00,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:11:00,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:00" (1/1) ... [2021-01-06 17:11:00,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:00" (1/1) ... [2021-01-06 17:11:00,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:11:00,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:11:00,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:11:00,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:11:00,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:00" (1/1) ... [2021-01-06 17:11:00,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:00" (1/1) ... [2021-01-06 17:11:00,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:00" (1/1) ... [2021-01-06 17:11:00,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:00" (1/1) ... [2021-01-06 17:11:00,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:00" (1/1) ... [2021-01-06 17:11:00,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:00" (1/1) ... [2021-01-06 17:11:00,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:00" (1/1) ... [2021-01-06 17:11:00,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:11:00,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:11:00,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:11:00,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:11:00,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:11:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:11:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:11:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:11:00,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:11:00,575 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:11:00,576 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-01-06 17:11:00,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:11:00 BoogieIcfgContainer [2021-01-06 17:11:00,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:11:00,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:11:00,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:11:00,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:11:00,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:10:59" (1/3) ... [2021-01-06 17:11:00,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d10faf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:11:00, skipping insertion in model container [2021-01-06 17:11:00,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:11:00" (2/3) ... [2021-01-06 17:11:00,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d10faf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:11:00, skipping insertion in model container [2021-01-06 17:11:00,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:11:00" (3/3) ... [2021-01-06 17:11:00,588 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark52_polynomial.i [2021-01-06 17:11:00,595 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:11:00,601 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 17:11:00,637 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 17:11:00,685 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:11:00,685 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:11:00,685 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:11:00,686 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:11:00,686 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:11:00,686 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:11:00,686 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:11:00,687 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:11:00,706 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2021-01-06 17:11:00,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:11:00,712 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:00,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:11:00,714 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:00,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:00,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1807089479, now seen corresponding path program 1 times [2021-01-06 17:11:00,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:00,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933434232] [2021-01-06 17:11:00,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:11:00,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933434232] [2021-01-06 17:11:00,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:11:00,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:11:00,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836843936] [2021-01-06 17:11:00,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:11:00,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:01,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:11:01,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:11:01,016 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2021-01-06 17:11:01,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:01,053 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-01-06 17:11:01,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:11:01,055 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-01-06 17:11:01,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:01,067 INFO L225 Difference]: With dead ends: 20 [2021-01-06 17:11:01,067 INFO L226 Difference]: Without dead ends: 8 [2021-01-06 17:11:01,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:11:01,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-01-06 17:11:01,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-01-06 17:11:01,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-01-06 17:11:01,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-01-06 17:11:01,109 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-01-06 17:11:01,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:01,109 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-01-06 17:11:01,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:11:01,110 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-01-06 17:11:01,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:11:01,110 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:01,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:11:01,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:11:01,112 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:01,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:01,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1806970315, now seen corresponding path program 1 times [2021-01-06 17:11:01,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:01,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144531684] [2021-01-06 17:11:01,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:01,150 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:11:01,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272064113] [2021-01-06 17:11:01,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:01,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 17:11:01,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:11:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:11:01,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144531684] [2021-01-06 17:11:01,313 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:11:01,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272064113] [2021-01-06 17:11:01,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:11:01,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:11:01,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298160017] [2021-01-06 17:11:01,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 17:11:01,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:01,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 17:11:01,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 17:11:01,318 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 3 states. [2021-01-06 17:11:01,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:01,334 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-01-06 17:11:01,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 17:11:01,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-01-06 17:11:01,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:01,336 INFO L225 Difference]: With dead ends: 13 [2021-01-06 17:11:01,336 INFO L226 Difference]: Without dead ends: 9 [2021-01-06 17:11:01,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 17:11:01,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-01-06 17:11:01,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-01-06 17:11:01,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-01-06 17:11:01,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-01-06 17:11:01,341 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-01-06 17:11:01,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:01,341 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-01-06 17:11:01,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 17:11:01,341 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-01-06 17:11:01,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:11:01,342 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:11:01,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:11:01,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:11:01,557 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:11:01,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:11:01,558 INFO L82 PathProgramCache]: Analyzing trace with hash 183170323, now seen corresponding path program 1 times [2021-01-06 17:11:01,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:11:01,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822328517] [2021-01-06 17:11:01,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:11:01,574 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:11:01,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [508854233] [2021-01-06 17:11:01,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:11:01,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 17:11:01,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:11:01,719 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:11:01,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:11:01,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822328517] [2021-01-06 17:11:01,739 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:11:01,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508854233] [2021-01-06 17:11:01,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:11:01,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:11:01,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260527084] [2021-01-06 17:11:01,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:11:01,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:11:01,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:11:01,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:11:01,743 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2021-01-06 17:11:01,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:11:01,785 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-01-06 17:11:01,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:11:01,785 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-01-06 17:11:01,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:11:01,786 INFO L225 Difference]: With dead ends: 9 [2021-01-06 17:11:01,786 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:11:01,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:11:01,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:11:01,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:11:01,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:11:01,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:11:01,788 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-01-06 17:11:01,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:11:01,788 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:11:01,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:11:01,788 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:11:01,789 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:11:02,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:11:02,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:11:02,030 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:11:02,031 INFO L189 CegarLoopUtils]: For program point L21(line 21) no Hoare annotation was computed. [2021-01-06 17:11:02,031 INFO L189 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-01-06 17:11:02,031 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:11:02,031 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:11:02,031 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:11:02,032 INFO L192 CegarLoopUtils]: At program point L26(lines 19 27) the Hoare annotation is: true [2021-01-06 17:11:02,032 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-01-06 17:11:02,032 INFO L185 CegarLoopUtils]: At program point L22-2(lines 22 24) the Hoare annotation is: (or (and (< 0 (+ ULTIMATE.start_main_~i~0 9)) (< ULTIMATE.start_main_~i~0 11)) (and (< 0 (+ ULTIMATE.start_main_~i~0 10)) (< ULTIMATE.start_main_~i~0 10))) [2021-01-06 17:11:02,032 INFO L189 CegarLoopUtils]: For program point L22-3(lines 22 24) no Hoare annotation was computed. [2021-01-06 17:11:02,032 INFO L189 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-01-06 17:11:02,033 INFO L189 CegarLoopUtils]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-01-06 17:11:02,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:11:02 BoogieIcfgContainer [2021-01-06 17:11:02,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:11:02,051 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:11:02,051 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:11:02,051 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:11:02,052 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:11:00" (3/4) ... [2021-01-06 17:11:02,055 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:11:02,065 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-01-06 17:11:02,066 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:11:02,066 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:11:02,066 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:11:02,110 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-zilu/benchmark52_polynomial.i-witness.graphml [2021-01-06 17:11:02,110 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:11:02,113 INFO L168 Benchmark]: Toolchain (without parser) took 2151.23 ms. Allocated memory is still 155.2 MB. Free memory was 130.3 MB in the beginning and 91.9 MB in the end (delta: 38.5 MB). Peak memory consumption was 38.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:11:02,113 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 155.2 MB. Free memory is still 126.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:11:02,114 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.67 ms. Allocated memory is still 155.2 MB. Free memory was 130.2 MB in the beginning and 120.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:11:02,115 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.12 ms. Allocated memory is still 155.2 MB. Free memory was 120.7 MB in the beginning and 119.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:11:02,116 INFO L168 Benchmark]: Boogie Preprocessor took 20.99 ms. Allocated memory is still 155.2 MB. Free memory was 119.4 MB in the beginning and 118.4 MB in the end (delta: 984.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:11:02,116 INFO L168 Benchmark]: RCFGBuilder took 321.55 ms. Allocated memory is still 155.2 MB. Free memory was 118.4 MB in the beginning and 107.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:11:02,117 INFO L168 Benchmark]: TraceAbstraction took 1469.63 ms. Allocated memory is still 155.2 MB. Free memory was 107.3 MB in the beginning and 94.0 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 8.0 GB. [2021-01-06 17:11:02,118 INFO L168 Benchmark]: Witness Printer took 60.02 ms. Allocated memory is still 155.2 MB. Free memory was 94.0 MB in the beginning and 91.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:11:02,122 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 155.2 MB. Free memory is still 126.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 235.67 ms. Allocated memory is still 155.2 MB. Free memory was 130.2 MB in the beginning and 120.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 35.12 ms. Allocated memory is still 155.2 MB. Free memory was 120.7 MB in the beginning and 119.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 20.99 ms. Allocated memory is still 155.2 MB. Free memory was 119.4 MB in the beginning and 118.4 MB in the end (delta: 984.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 321.55 ms. Allocated memory is still 155.2 MB. Free memory was 118.4 MB in the beginning and 107.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1469.63 ms. Allocated memory is still 155.2 MB. Free memory was 107.3 MB in the beginning and 94.0 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 8.0 GB. * Witness Printer took 60.02 ms. Allocated memory is still 155.2 MB. Free memory was 94.0 MB in the beginning and 91.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (0 < i + 9 && i < 11) || (0 < i + 10 && i < 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 2 SDslu, 9 SDs, 0 SdLazy, 23 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 20 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 386 SizeOfPredicates, 3 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 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 correct! Received shutdown request...