/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-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:00:41,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:00:41,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:00:41,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:00:41,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:00:41,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:00:41,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:00:41,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:00:41,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:00:41,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:00:41,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:00:41,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:00:41,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:00:41,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:00:41,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:00:41,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:00:41,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:00:41,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:00:41,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:00:41,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:00:41,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:00:41,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:00:41,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:00:41,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:00:41,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:00:41,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:00:41,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:00:41,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:00:41,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:00:41,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:00:41,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:00:41,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:00:41,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:00:41,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:00:41,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:00:41,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:00:41,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:00:41,708 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:00:41,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:00:41,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:00:41,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:00:41,715 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:00:41,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:00:41,715 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:00:41,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:00:41,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:00:41,716 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:00:41,717 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:00:41,718 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:00:41,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:00:41,718 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:00:41,719 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:00:41,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:00:41,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:00:41,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:00:41,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:00:41,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:00:41,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:00:41,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:00:41,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:00:41,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:00:41,721 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:00:42,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:00:42,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:00:42,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:00:42,176 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:00:42,176 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:00:42,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2021-01-07 05:00:42,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ab4d0c791/663fae167a8d4272a0ea6147d24a228f/FLAG2721bb451 [2021-01-07 05:00:42,982 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:00:42,983 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2021-01-07 05:00:43,007 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ab4d0c791/663fae167a8d4272a0ea6147d24a228f/FLAG2721bb451 [2021-01-07 05:00:43,234 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ab4d0c791/663fae167a8d4272a0ea6147d24a228f [2021-01-07 05:00:43,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:00:43,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:00:43,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:00:43,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:00:43,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:00:43,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:00:43" (1/1) ... [2021-01-07 05:00:43,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e2e3c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:43, skipping insertion in model container [2021-01-07 05:00:43,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:00:43" (1/1) ... [2021-01-07 05:00:43,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:00:43,336 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: address: IdentifierExpression[#t~post3,] left hand side expression in assignment: lhs: VariableLHS[~length~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] [2021-01-07 05:00:43,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:00:43,710 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: address: IdentifierExpression[#t~post3,] left hand side expression in assignment: lhs: VariableLHS[~length~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] [2021-01-07 05:00:43,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:00:43,827 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:00:43,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:43 WrapperNode [2021-01-07 05:00:43,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:00:43,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:00:43,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:00:43,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:00:43,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:43" (1/1) ... [2021-01-07 05:00:43,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:43" (1/1) ... [2021-01-07 05:00:43,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:00:43,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:00:43,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:00:43,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:00:43,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:43" (1/1) ... [2021-01-07 05:00:43,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:43" (1/1) ... [2021-01-07 05:00:43,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:43" (1/1) ... [2021-01-07 05:00:43,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:43" (1/1) ... [2021-01-07 05:00:43,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:43" (1/1) ... [2021-01-07 05:00:43,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:43" (1/1) ... [2021-01-07 05:00:43,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:43" (1/1) ... [2021-01-07 05:00:43,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:00:43,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:00:43,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:00:43,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:00:43,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:43" (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 [2021-01-07 05:00:44,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:00:44,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:00:44,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:00:44,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:00:44,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:00:44,368 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:00:44,368 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-01-07 05:00:44,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:00:44 BoogieIcfgContainer [2021-01-07 05:00:44,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:00:44,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:00:44,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:00:44,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:00:44,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:00:43" (1/3) ... [2021-01-07 05:00:44,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d1f332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:00:44, skipping insertion in model container [2021-01-07 05:00:44,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:43" (2/3) ... [2021-01-07 05:00:44,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d1f332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:00:44, skipping insertion in model container [2021-01-07 05:00:44,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:00:44" (3/3) ... [2021-01-07 05:00:44,391 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca-2.i [2021-01-07 05:00:44,406 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:00:44,413 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-01-07 05:00:44,459 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-01-07 05:00:44,486 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:00:44,487 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:00:44,487 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:00:44,487 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:00:44,487 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:00:44,487 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:00:44,488 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:00:44,488 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:00:44,503 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2021-01-07 05:00:44,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-07 05:00:44,510 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:44,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-07 05:00:44,511 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:00:44,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:44,519 INFO L82 PathProgramCache]: Analyzing trace with hash 889510815, now seen corresponding path program 1 times [2021-01-07 05:00:44,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:44,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151576054] [2021-01-07 05:00:44,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:44,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:44,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151576054] [2021-01-07 05:00:44,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:44,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:00:44,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360047105] [2021-01-07 05:00:44,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:44,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:44,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:44,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:44,757 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2021-01-07 05:00:44,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:44,817 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-01-07 05:00:44,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:44,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-01-07 05:00:44,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:44,830 INFO L225 Difference]: With dead ends: 21 [2021-01-07 05:00:44,830 INFO L226 Difference]: Without dead ends: 17 [2021-01-07 05:00:44,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:00:44,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-01-07 05:00:44,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-01-07 05:00:44,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-01-07 05:00:44,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-01-07 05:00:44,867 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 6 [2021-01-07 05:00:44,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:44,868 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-01-07 05:00:44,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:44,868 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-01-07 05:00:44,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-07 05:00:44,869 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:44,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-07 05:00:44,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:00:44,869 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:00:44,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:44,871 INFO L82 PathProgramCache]: Analyzing trace with hash 889512737, now seen corresponding path program 1 times [2021-01-07 05:00:44,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:44,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397922550] [2021-01-07 05:00:44,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:44,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:44,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397922550] [2021-01-07 05:00:44,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:44,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:00:44,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684698072] [2021-01-07 05:00:44,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:00:44,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:44,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:00:44,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:44,905 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand 3 states. [2021-01-07 05:00:44,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:44,925 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-01-07 05:00:44,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:00:44,926 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-01-07 05:00:44,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:44,927 INFO L225 Difference]: With dead ends: 16 [2021-01-07 05:00:44,927 INFO L226 Difference]: Without dead ends: 15 [2021-01-07 05:00:44,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:44,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-01-07 05:00:44,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-01-07 05:00:44,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-01-07 05:00:44,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-01-07 05:00:44,931 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2021-01-07 05:00:44,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:44,931 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-01-07 05:00:44,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:00:44,932 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-01-07 05:00:44,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:00:44,936 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:44,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:44,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:00:44,937 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:00:44,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:44,938 INFO L82 PathProgramCache]: Analyzing trace with hash 121446415, now seen corresponding path program 1 times [2021-01-07 05:00:44,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:44,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705042085] [2021-01-07 05:00:44,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:45,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:45,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705042085] [2021-01-07 05:00:45,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:45,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:45,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356574088] [2021-01-07 05:00:45,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:45,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:45,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:45,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:45,066 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2021-01-07 05:00:45,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:45,096 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-01-07 05:00:45,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:45,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-01-07 05:00:45,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:45,097 INFO L225 Difference]: With dead ends: 13 [2021-01-07 05:00:45,097 INFO L226 Difference]: Without dead ends: 13 [2021-01-07 05:00:45,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:00:45,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-01-07 05:00:45,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-01-07 05:00:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-01-07 05:00:45,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-01-07 05:00:45,101 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2021-01-07 05:00:45,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:45,102 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-01-07 05:00:45,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:45,102 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-01-07 05:00:45,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:00:45,103 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:45,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:45,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:00:45,104 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:00:45,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:45,104 INFO L82 PathProgramCache]: Analyzing trace with hash 121446416, now seen corresponding path program 1 times [2021-01-07 05:00:45,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:45,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574221512] [2021-01-07 05:00:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:45,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:45,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574221512] [2021-01-07 05:00:45,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:45,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:00:45,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780938013] [2021-01-07 05:00:45,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:00:45,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:45,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:00:45,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:00:45,199 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 5 states. [2021-01-07 05:00:45,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:45,260 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-01-07 05:00:45,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:00:45,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-01-07 05:00:45,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:45,262 INFO L225 Difference]: With dead ends: 20 [2021-01-07 05:00:45,262 INFO L226 Difference]: Without dead ends: 20 [2021-01-07 05:00:45,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:00:45,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-01-07 05:00:45,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2021-01-07 05:00:45,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-01-07 05:00:45,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-01-07 05:00:45,269 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 8 [2021-01-07 05:00:45,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:45,269 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-01-07 05:00:45,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:00:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-01-07 05:00:45,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:00:45,270 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:45,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:45,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:00:45,272 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:00:45,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:45,272 INFO L82 PathProgramCache]: Analyzing trace with hash -530130097, now seen corresponding path program 1 times [2021-01-07 05:00:45,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:45,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718369518] [2021-01-07 05:00:45,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:45,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718369518] [2021-01-07 05:00:45,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:45,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:00:45,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863472246] [2021-01-07 05:00:45,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:00:45,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:45,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:00:45,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:00:45,401 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 5 states. [2021-01-07 05:00:45,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:45,450 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-01-07 05:00:45,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:00:45,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2021-01-07 05:00:45,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:45,452 INFO L225 Difference]: With dead ends: 28 [2021-01-07 05:00:45,453 INFO L226 Difference]: Without dead ends: 28 [2021-01-07 05:00:45,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:00:45,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-01-07 05:00:45,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2021-01-07 05:00:45,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-01-07 05:00:45,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-01-07 05:00:45,457 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 9 [2021-01-07 05:00:45,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:45,458 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-01-07 05:00:45,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:00:45,458 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-01-07 05:00:45,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:00:45,459 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:45,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:45,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:00:45,460 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:00:45,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:45,460 INFO L82 PathProgramCache]: Analyzing trace with hash -472871795, now seen corresponding path program 1 times [2021-01-07 05:00:45,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:45,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732651877] [2021-01-07 05:00:45,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:45,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:45,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732651877] [2021-01-07 05:00:45,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:45,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-07 05:00:45,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727446010] [2021-01-07 05:00:45,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:00:45,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:45,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:00:45,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:00:45,543 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 6 states. [2021-01-07 05:00:45,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:45,596 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-01-07 05:00:45,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:00:45,596 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-01-07 05:00:45,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:45,597 INFO L225 Difference]: With dead ends: 19 [2021-01-07 05:00:45,597 INFO L226 Difference]: Without dead ends: 19 [2021-01-07 05:00:45,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:00:45,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-01-07 05:00:45,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2021-01-07 05:00:45,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-01-07 05:00:45,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-01-07 05:00:45,601 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2021-01-07 05:00:45,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:45,602 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-01-07 05:00:45,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:00:45,602 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-01-07 05:00:45,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-07 05:00:45,603 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:45,603 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:45,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:00:45,603 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:00:45,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:45,604 INFO L82 PathProgramCache]: Analyzing trace with hash -461287736, now seen corresponding path program 1 times [2021-01-07 05:00:45,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:45,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123565695] [2021-01-07 05:00:45,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:45,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:45,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123565695] [2021-01-07 05:00:45,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832379730] [2021-01-07 05:00:45,739 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 [2021-01-07 05:00:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:45,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-07 05:00:45,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:45,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:45,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:45,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-01-07 05:00:45,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196401775] [2021-01-07 05:00:45,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:00:45,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:45,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:00:45,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:00:45,915 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states. [2021-01-07 05:00:45,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:45,973 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-01-07 05:00:45,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:00:45,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2021-01-07 05:00:45,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:45,974 INFO L225 Difference]: With dead ends: 26 [2021-01-07 05:00:45,975 INFO L226 Difference]: Without dead ends: 26 [2021-01-07 05:00:45,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:00:45,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-01-07 05:00:45,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2021-01-07 05:00:45,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-07 05:00:45,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-01-07 05:00:45,979 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2021-01-07 05:00:45,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:45,979 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-01-07 05:00:45,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:00:45,979 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-01-07 05:00:45,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-07 05:00:45,980 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:45,980 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:46,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-07 05:00:46,195 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:00:46,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:46,196 INFO L82 PathProgramCache]: Analyzing trace with hash 218770634, now seen corresponding path program 1 times [2021-01-07 05:00:46,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:46,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542795990] [2021-01-07 05:00:46,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:46,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:46,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542795990] [2021-01-07 05:00:46,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537702670] [2021-01-07 05:00:46,329 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 [2021-01-07 05:00:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:46,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-07 05:00:46,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:46,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:46,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:46,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-01-07 05:00:46,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64307679] [2021-01-07 05:00:46,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:00:46,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:46,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:00:46,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:00:46,493 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 8 states. [2021-01-07 05:00:46,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:46,559 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-01-07 05:00:46,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:00:46,572 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2021-01-07 05:00:46,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:46,573 INFO L225 Difference]: With dead ends: 41 [2021-01-07 05:00:46,573 INFO L226 Difference]: Without dead ends: 41 [2021-01-07 05:00:46,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:00:46,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-01-07 05:00:46,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 24. [2021-01-07 05:00:46,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-01-07 05:00:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-01-07 05:00:46,581 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 12 [2021-01-07 05:00:46,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:46,581 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-01-07 05:00:46,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:00:46,581 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-01-07 05:00:46,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-07 05:00:46,585 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:46,585 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:46,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:46,799 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:00:46,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:46,800 INFO L82 PathProgramCache]: Analyzing trace with hash -174256376, now seen corresponding path program 1 times [2021-01-07 05:00:46,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:46,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226351780] [2021-01-07 05:00:46,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:47,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226351780] [2021-01-07 05:00:47,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710313549] [2021-01-07 05:00:47,012 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:47,074 WARN L261 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 40 conjunts are in the unsatisfiable core [2021-01-07 05:00:47,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:47,144 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:00:47,146 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:47,159 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:47,161 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:47,162 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2021-01-07 05:00:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:47,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:47,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-01-07 05:00:47,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260888727] [2021-01-07 05:00:47,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-07 05:00:47,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:47,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-07 05:00:47,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:00:47,456 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 15 states. [2021-01-07 05:00:47,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:47,698 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-01-07 05:00:47,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:00:47,699 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2021-01-07 05:00:47,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:47,700 INFO L225 Difference]: With dead ends: 29 [2021-01-07 05:00:47,700 INFO L226 Difference]: Without dead ends: 29 [2021-01-07 05:00:47,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:00:47,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-01-07 05:00:47,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-01-07 05:00:47,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-01-07 05:00:47,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-01-07 05:00:47,705 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 12 [2021-01-07 05:00:47,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:47,705 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-01-07 05:00:47,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-07 05:00:47,706 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-01-07 05:00:47,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-07 05:00:47,706 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:47,706 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:47,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:47,913 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:00:47,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:47,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1415019625, now seen corresponding path program 1 times [2021-01-07 05:00:47,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:47,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648238084] [2021-01-07 05:00:47,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:47,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:00:47,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648238084] [2021-01-07 05:00:47,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:47,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:47,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614957297] [2021-01-07 05:00:47,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:47,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:47,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:47,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:47,980 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2021-01-07 05:00:47,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:47,994 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-01-07 05:00:47,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:47,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-01-07 05:00:47,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:47,995 INFO L225 Difference]: With dead ends: 27 [2021-01-07 05:00:47,996 INFO L226 Difference]: Without dead ends: 17 [2021-01-07 05:00:47,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:47,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-01-07 05:00:47,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-01-07 05:00:47,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-01-07 05:00:47,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-01-07 05:00:47,999 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2021-01-07 05:00:47,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:47,999 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-01-07 05:00:47,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:47,999 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-01-07 05:00:47,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:00:48,000 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:48,000 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:48,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-07 05:00:48,000 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:00:48,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:48,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1293876800, now seen corresponding path program 2 times [2021-01-07 05:00:48,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:48,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182320432] [2021-01-07 05:00:48,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:48,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182320432] [2021-01-07 05:00:48,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060954362] [2021-01-07 05:00:48,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:48,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:00:48,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:48,424 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 53 conjunts are in the unsatisfiable core [2021-01-07 05:00:48,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:48,455 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:00:48,456 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:48,464 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:48,466 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:48,466 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2021-01-07 05:00:48,842 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:48,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:48,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-01-07 05:00:48,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961139647] [2021-01-07 05:00:48,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-07 05:00:48,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:48,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-07 05:00:48,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-01-07 05:00:48,845 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 19 states. [2021-01-07 05:00:49,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:49,391 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-01-07 05:00:49,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:00:49,392 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 16 [2021-01-07 05:00:49,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:49,393 INFO L225 Difference]: With dead ends: 21 [2021-01-07 05:00:49,393 INFO L226 Difference]: Without dead ends: 0 [2021-01-07 05:00:49,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2021-01-07 05:00:49,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-07 05:00:49,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-07 05:00:49,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-07 05:00:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-07 05:00:49,396 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-01-07 05:00:49,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:49,396 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-07 05:00:49,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-07 05:00:49,397 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-07 05:00:49,397 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-07 05:00:49,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:49,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.01 05:00:49 BoogieIcfgContainer [2021-01-07 05:00:49,619 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-07 05:00:49,619 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-07 05:00:49,619 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-07 05:00:49,619 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-07 05:00:49,620 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:00:44" (3/4) ... [2021-01-07 05:00:49,623 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-07 05:00:49,634 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-01-07 05:00:49,635 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-07 05:00:49,635 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-01-07 05:00:49,676 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-memsafety/openbsd_cbzero-alloca-2.i-witness.graphml [2021-01-07 05:00:49,676 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-07 05:00:49,678 INFO L168 Benchmark]: Toolchain (without parser) took 6438.19 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 124.9 MB in the beginning and 140.0 MB in the end (delta: -15.1 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. [2021-01-07 05:00:49,678 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 130.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:00:49,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 583.70 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 104.7 MB in the end (delta: 20.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-01-07 05:00:49,680 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.78 ms. Allocated memory is still 151.0 MB. Free memory was 104.6 MB in the beginning and 102.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:00:49,680 INFO L168 Benchmark]: Boogie Preprocessor took 28.32 ms. Allocated memory is still 151.0 MB. Free memory was 102.9 MB in the beginning and 101.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:00:49,681 INFO L168 Benchmark]: RCFGBuilder took 458.12 ms. Allocated memory is still 151.0 MB. Free memory was 101.6 MB in the beginning and 125.0 MB in the end (delta: -23.4 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. [2021-01-07 05:00:49,682 INFO L168 Benchmark]: TraceAbstraction took 5241.81 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.0 MB in the beginning and 142.3 MB in the end (delta: -17.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 8.0 GB. [2021-01-07 05:00:49,682 INFO L168 Benchmark]: Witness Printer took 57.12 ms. Allocated memory is still 181.4 MB. Free memory was 142.3 MB in the beginning and 140.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:00:49,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 130.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 583.70 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 104.7 MB in the end (delta: 20.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 52.78 ms. Allocated memory is still 151.0 MB. Free memory was 104.6 MB in the beginning and 102.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.32 ms. Allocated memory is still 151.0 MB. Free memory was 102.9 MB in the beginning and 101.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 458.12 ms. Allocated memory is still 151.0 MB. Free memory was 101.6 MB in the beginning and 125.0 MB in the end (delta: -23.4 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5241.81 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.0 MB in the beginning and 142.3 MB in the end (delta: -17.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 8.0 GB. * Witness Printer took 57.12 ms. Allocated memory is still 181.4 MB. Free memory was 142.3 MB in the beginning and 140.0 MB in the end (delta: 2.3 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: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 141 SDslu, 382 SDs, 0 SdLazy, 333 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=9, 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, 11 MinimizatonAttempts, 40 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 148 ConstructedInterpolants, 0 QuantifiedInterpolants, 13113 SizeOfPredicates, 37 NumberOfNonLiveVariables, 333 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 8/40 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...