/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-dcfa08f [2020-12-23 16:49:19,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 16:49:19,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 16:49:19,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 16:49:19,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 16:49:19,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 16:49:19,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 16:49:19,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 16:49:19,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 16:49:19,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 16:49:19,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 16:49:19,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 16:49:19,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 16:49:19,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 16:49:19,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 16:49:19,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 16:49:19,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 16:49:19,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 16:49:19,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 16:49:19,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 16:49:19,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 16:49:19,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 16:49:19,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 16:49:19,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 16:49:19,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 16:49:19,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 16:49:19,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 16:49:19,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 16:49:19,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 16:49:19,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 16:49:19,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 16:49:19,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 16:49:19,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 16:49:19,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 16:49:19,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 16:49:19,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 16:49:19,852 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 16:49:19,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 16:49:19,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 16:49:19,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 16:49:19,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 16:49:19,913 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 16:49:19,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 16:49:19,913 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 16:49:19,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 16:49:19,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 16:49:19,914 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 16:49:19,915 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 16:49:19,915 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 16:49:19,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 16:49:19,916 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 16:49:19,916 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 16:49:19,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 16:49:19,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 16:49:19,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 16:49:19,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:49:19,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 16:49:19,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 16:49:19,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 16:49:19,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 16:49:19,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 16:49:19,918 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 16:49:20,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 16:49:20,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 16:49:20,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 16:49:20,389 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 16:49:20,389 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 16:49:20,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2020-12-23 16:49:20,479 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7d4df2eef/891dcdff8e7a420ba7e1e6c892f4ddae/FLAG863839ecd [2020-12-23 16:49:21,181 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 16:49:21,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2020-12-23 16:49:21,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7d4df2eef/891dcdff8e7a420ba7e1e6c892f4ddae/FLAG863839ecd [2020-12-23 16:49:21,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7d4df2eef/891dcdff8e7a420ba7e1e6c892f4ddae [2020-12-23 16:49:21,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 16:49:21,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 16:49:21,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 16:49:21,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 16:49:21,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 16:49:21,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:49:21" (1/1) ... [2020-12-23 16:49:21,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750e9c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:21, skipping insertion in model container [2020-12-23 16:49:21,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:49:21" (1/1) ... [2020-12-23 16:49:21,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 16:49:21,535 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,] [2020-12-23 16:49:21,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:49:21,840 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,] [2020-12-23 16:49:21,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:49:21,959 INFO L208 MainTranslator]: Completed translation [2020-12-23 16:49:21,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:21 WrapperNode [2020-12-23 16:49:21,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 16:49:21,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 16:49:21,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 16:49:21,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 16:49:21,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:21" (1/1) ... [2020-12-23 16:49:21,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:21" (1/1) ... [2020-12-23 16:49:22,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 16:49:22,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 16:49:22,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 16:49:22,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 16:49:22,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:21" (1/1) ... [2020-12-23 16:49:22,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:21" (1/1) ... [2020-12-23 16:49:22,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:21" (1/1) ... [2020-12-23 16:49:22,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:21" (1/1) ... [2020-12-23 16:49:22,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:21" (1/1) ... [2020-12-23 16:49:22,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:21" (1/1) ... [2020-12-23 16:49:22,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:21" (1/1) ... [2020-12-23 16:49:22,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 16:49:22,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 16:49:22,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 16:49:22,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 16:49:22,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:21" (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 [2020-12-23 16:49:22,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 16:49:22,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 16:49:22,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 16:49:22,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 16:49:22,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 16:49:22,506 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 16:49:22,507 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-23 16:49:22,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:49:22 BoogieIcfgContainer [2020-12-23 16:49:22,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 16:49:22,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 16:49:22,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 16:49:22,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 16:49:22,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:49:21" (1/3) ... [2020-12-23 16:49:22,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc00503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:49:22, skipping insertion in model container [2020-12-23 16:49:22,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:49:21" (2/3) ... [2020-12-23 16:49:22,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc00503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:49:22, skipping insertion in model container [2020-12-23 16:49:22,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:49:22" (3/3) ... [2020-12-23 16:49:22,521 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca-2.i [2020-12-23 16:49:22,531 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 16:49:22,537 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-23 16:49:22,562 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-23 16:49:22,617 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 16:49:22,618 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 16:49:22,618 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 16:49:22,618 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 16:49:22,618 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 16:49:22,618 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 16:49:22,618 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 16:49:22,618 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 16:49:22,633 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-23 16:49:22,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 16:49:22,642 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:22,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 16:49:22,643 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:49:22,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:22,651 INFO L82 PathProgramCache]: Analyzing trace with hash 889510815, now seen corresponding path program 1 times [2020-12-23 16:49:22,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:22,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642527672] [2020-12-23 16:49:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:22,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:22,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642527672] [2020-12-23 16:49:22,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:22,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:49:22,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967483223] [2020-12-23 16:49:22,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:49:22,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:22,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:49:22,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:49:22,883 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-12-23 16:49:22,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:22,951 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-12-23 16:49:22,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:49:22,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-23 16:49:22,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:22,963 INFO L225 Difference]: With dead ends: 21 [2020-12-23 16:49:22,963 INFO L226 Difference]: Without dead ends: 17 [2020-12-23 16:49:22,965 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 [2020-12-23 16:49:22,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-23 16:49:22,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2020-12-23 16:49:23,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-23 16:49:23,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2020-12-23 16:49:23,002 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 6 [2020-12-23 16:49:23,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:23,003 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2020-12-23 16:49:23,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:49:23,003 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2020-12-23 16:49:23,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 16:49:23,004 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:23,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 16:49:23,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 16:49:23,005 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:49:23,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:23,006 INFO L82 PathProgramCache]: Analyzing trace with hash 889512737, now seen corresponding path program 1 times [2020-12-23 16:49:23,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:23,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717591651] [2020-12-23 16:49:23,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:23,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:23,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717591651] [2020-12-23 16:49:23,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:23,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:49:23,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217844615] [2020-12-23 16:49:23,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:49:23,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:23,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:49:23,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:49:23,042 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand 3 states. [2020-12-23 16:49:23,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:23,060 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-12-23 16:49:23,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:49:23,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-23 16:49:23,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:23,062 INFO L225 Difference]: With dead ends: 16 [2020-12-23 16:49:23,062 INFO L226 Difference]: Without dead ends: 15 [2020-12-23 16:49:23,063 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 [2020-12-23 16:49:23,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-23 16:49:23,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-12-23 16:49:23,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-23 16:49:23,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-12-23 16:49:23,067 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2020-12-23 16:49:23,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:23,067 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-12-23 16:49:23,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:49:23,067 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-12-23 16:49:23,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 16:49:23,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:23,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:23,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 16:49:23,069 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:49:23,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:23,070 INFO L82 PathProgramCache]: Analyzing trace with hash 121446415, now seen corresponding path program 1 times [2020-12-23 16:49:23,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:23,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790932851] [2020-12-23 16:49:23,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:23,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790932851] [2020-12-23 16:49:23,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:23,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:49:23,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979802215] [2020-12-23 16:49:23,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:49:23,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:23,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:49:23,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:49:23,158 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2020-12-23 16:49:23,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:23,216 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-12-23 16:49:23,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:49:23,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-23 16:49:23,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:23,218 INFO L225 Difference]: With dead ends: 13 [2020-12-23 16:49:23,218 INFO L226 Difference]: Without dead ends: 13 [2020-12-23 16:49:23,219 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 [2020-12-23 16:49:23,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-23 16:49:23,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-23 16:49:23,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-23 16:49:23,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-12-23 16:49:23,225 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2020-12-23 16:49:23,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:23,226 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-12-23 16:49:23,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:49:23,226 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-12-23 16:49:23,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 16:49:23,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:23,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:23,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 16:49:23,228 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:49:23,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:23,230 INFO L82 PathProgramCache]: Analyzing trace with hash 121446416, now seen corresponding path program 1 times [2020-12-23 16:49:23,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:23,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51465160] [2020-12-23 16:49:23,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:23,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:23,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51465160] [2020-12-23 16:49:23,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:23,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:49:23,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283421267] [2020-12-23 16:49:23,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:49:23,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:23,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:49:23,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:49:23,325 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 5 states. [2020-12-23 16:49:23,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:23,370 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-12-23 16:49:23,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:49:23,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-23 16:49:23,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:23,372 INFO L225 Difference]: With dead ends: 20 [2020-12-23 16:49:23,372 INFO L226 Difference]: Without dead ends: 20 [2020-12-23 16:49:23,373 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 [2020-12-23 16:49:23,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-23 16:49:23,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2020-12-23 16:49:23,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-23 16:49:23,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-12-23 16:49:23,377 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 8 [2020-12-23 16:49:23,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:23,377 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-12-23 16:49:23,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:49:23,377 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-12-23 16:49:23,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 16:49:23,378 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:23,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:23,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 16:49:23,379 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:49:23,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:23,379 INFO L82 PathProgramCache]: Analyzing trace with hash -530130097, now seen corresponding path program 1 times [2020-12-23 16:49:23,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:23,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85310745] [2020-12-23 16:49:23,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:23,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85310745] [2020-12-23 16:49:23,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:23,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 16:49:23,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216630153] [2020-12-23 16:49:23,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:49:23,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:23,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:49:23,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:49:23,476 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 5 states. [2020-12-23 16:49:23,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:23,531 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-12-23 16:49:23,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:49:23,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-23 16:49:23,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:23,533 INFO L225 Difference]: With dead ends: 28 [2020-12-23 16:49:23,533 INFO L226 Difference]: Without dead ends: 28 [2020-12-23 16:49:23,534 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 [2020-12-23 16:49:23,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-23 16:49:23,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2020-12-23 16:49:23,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-23 16:49:23,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-12-23 16:49:23,539 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 9 [2020-12-23 16:49:23,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:23,540 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-12-23 16:49:23,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:49:23,541 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-12-23 16:49:23,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 16:49:23,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:23,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:23,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 16:49:23,542 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:49:23,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:23,543 INFO L82 PathProgramCache]: Analyzing trace with hash -472871795, now seen corresponding path program 1 times [2020-12-23 16:49:23,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:23,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094087356] [2020-12-23 16:49:23,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:23,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:23,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094087356] [2020-12-23 16:49:23,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:23,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 16:49:23,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88201211] [2020-12-23 16:49:23,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:49:23,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:23,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:49:23,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:49:23,648 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 6 states. [2020-12-23 16:49:23,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:23,717 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-12-23 16:49:23,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 16:49:23,718 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-23 16:49:23,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:23,719 INFO L225 Difference]: With dead ends: 19 [2020-12-23 16:49:23,719 INFO L226 Difference]: Without dead ends: 19 [2020-12-23 16:49:23,719 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 [2020-12-23 16:49:23,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-23 16:49:23,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2020-12-23 16:49:23,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-23 16:49:23,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-12-23 16:49:23,722 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2020-12-23 16:49:23,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:23,723 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-12-23 16:49:23,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:49:23,723 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-12-23 16:49:23,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 16:49:23,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:23,724 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:23,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 16:49:23,724 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:49:23,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:23,725 INFO L82 PathProgramCache]: Analyzing trace with hash -461287736, now seen corresponding path program 1 times [2020-12-23 16:49:23,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:23,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741954852] [2020-12-23 16:49:23,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:23,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741954852] [2020-12-23 16:49:23,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230169469] [2020-12-23 16:49:23,914 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 [2020-12-23 16:49:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:23,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 16:49:23,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:24,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:24,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:24,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-23 16:49:24,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113345716] [2020-12-23 16:49:24,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 16:49:24,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:24,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 16:49:24,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:49:24,098 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states. [2020-12-23 16:49:24,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:24,157 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-12-23 16:49:24,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 16:49:24,158 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-12-23 16:49:24,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:24,158 INFO L225 Difference]: With dead ends: 26 [2020-12-23 16:49:24,159 INFO L226 Difference]: Without dead ends: 26 [2020-12-23 16:49:24,159 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 [2020-12-23 16:49:24,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-23 16:49:24,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-12-23 16:49:24,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 16:49:24,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-12-23 16:49:24,163 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2020-12-23 16:49:24,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:24,164 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-12-23 16:49:24,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 16:49:24,164 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-23 16:49:24,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 16:49:24,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:24,165 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:24,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 16:49:24,379 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:49:24,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:24,381 INFO L82 PathProgramCache]: Analyzing trace with hash 218770634, now seen corresponding path program 1 times [2020-12-23 16:49:24,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:24,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873066368] [2020-12-23 16:49:24,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:24,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873066368] [2020-12-23 16:49:24,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324774524] [2020-12-23 16:49:24,487 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 [2020-12-23 16:49:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:24,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 16:49:24,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:24,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:24,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-23 16:49:24,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736315699] [2020-12-23 16:49:24,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 16:49:24,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:24,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 16:49:24,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:49:24,606 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 8 states. [2020-12-23 16:49:24,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:24,666 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-12-23 16:49:24,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 16:49:24,667 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-23 16:49:24,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:24,668 INFO L225 Difference]: With dead ends: 41 [2020-12-23 16:49:24,668 INFO L226 Difference]: Without dead ends: 41 [2020-12-23 16:49:24,668 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 [2020-12-23 16:49:24,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-23 16:49:24,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 24. [2020-12-23 16:49:24,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-23 16:49:24,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-12-23 16:49:24,673 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 12 [2020-12-23 16:49:24,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:24,673 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-12-23 16:49:24,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 16:49:24,673 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-12-23 16:49:24,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 16:49:24,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:24,674 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:24,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:24,889 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:49:24,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:24,891 INFO L82 PathProgramCache]: Analyzing trace with hash -174256376, now seen corresponding path program 1 times [2020-12-23 16:49:24,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:24,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658131933] [2020-12-23 16:49:24,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:25,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:25,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658131933] [2020-12-23 16:49:25,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304676314] [2020-12-23 16:49:25,074 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 [2020-12-23 16:49:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:25,126 WARN L261 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-23 16:49:25,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:25,187 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 [2020-12-23 16:49:25,188 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:25,197 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:25,199 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:25,199 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2020-12-23 16:49:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:25,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:25,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-12-23 16:49:25,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156746338] [2020-12-23 16:49:25,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 16:49:25,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:25,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 16:49:25,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-12-23 16:49:25,368 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 15 states. [2020-12-23 16:49:25,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:25,559 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2020-12-23 16:49:25,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 16:49:25,560 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-12-23 16:49:25,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:25,561 INFO L225 Difference]: With dead ends: 29 [2020-12-23 16:49:25,561 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 16:49:25,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-12-23 16:49:25,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 16:49:25,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-12-23 16:49:25,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 16:49:25,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-12-23 16:49:25,566 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 12 [2020-12-23 16:49:25,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:25,566 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-12-23 16:49:25,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 16:49:25,567 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-12-23 16:49:25,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 16:49:25,567 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:25,567 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:25,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:25,781 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:49:25,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:25,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1415019625, now seen corresponding path program 1 times [2020-12-23 16:49:25,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:25,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334649622] [2020-12-23 16:49:25,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 16:49:25,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334649622] [2020-12-23 16:49:25,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:25,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:49:25,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127838354] [2020-12-23 16:49:25,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:49:25,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:25,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:49:25,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:49:25,891 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-12-23 16:49:25,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:25,914 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2020-12-23 16:49:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:49:25,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 16:49:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:25,916 INFO L225 Difference]: With dead ends: 27 [2020-12-23 16:49:25,916 INFO L226 Difference]: Without dead ends: 17 [2020-12-23 16:49:25,916 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 [2020-12-23 16:49:25,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-23 16:49:25,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-23 16:49:25,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-23 16:49:25,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-12-23 16:49:25,923 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2020-12-23 16:49:25,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:25,924 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-12-23 16:49:25,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:49:25,925 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-12-23 16:49:25,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 16:49:25,925 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:25,925 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:25,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 16:49:25,926 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 16:49:25,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:25,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1293876800, now seen corresponding path program 2 times [2020-12-23 16:49:25,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:25,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729094723] [2020-12-23 16:49:25,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:26,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729094723] [2020-12-23 16:49:26,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958267810] [2020-12-23 16:49:26,266 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 [2020-12-23 16:49:26,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:49:26,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:26,351 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 53 conjunts are in the unsatisfiable core [2020-12-23 16:49:26,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:26,399 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 [2020-12-23 16:49:26,400 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:26,412 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:26,414 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:26,414 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2020-12-23 16:49:26,798 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:26,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:26,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2020-12-23 16:49:26,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040934706] [2020-12-23 16:49:26,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 16:49:26,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:26,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 16:49:26,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2020-12-23 16:49:26,812 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 19 states. [2020-12-23 16:49:27,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:27,333 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-12-23 16:49:27,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 16:49:27,336 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 16 [2020-12-23 16:49:27,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:27,338 INFO L225 Difference]: With dead ends: 21 [2020-12-23 16:49:27,338 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 16:49:27,341 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 [2020-12-23 16:49:27,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 16:49:27,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 16:49:27,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 16:49:27,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 16:49:27,342 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-23 16:49:27,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:27,342 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 16:49:27,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 16:49:27,343 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 16:49:27,343 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 16:49:27,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:27,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 04:49:27 BoogieIcfgContainer [2020-12-23 16:49:27,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 16:49:27,552 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 16:49:27,552 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 16:49:27,552 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 16:49:27,553 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:49:22" (3/4) ... [2020-12-23 16:49:27,558 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 16:49:27,569 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-23 16:49:27,569 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 16:49:27,570 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-23 16:49:27,610 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-memsafety/openbsd_cbzero-alloca-2.i-witness.graphml [2020-12-23 16:49:27,611 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 16:49:27,612 INFO L168 Benchmark]: Toolchain (without parser) took 6133.49 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.5 MB in the beginning and 132.1 MB in the end (delta: -6.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 8.0 GB. [2020-12-23 16:49:27,612 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 124.5 MB in the end (delta: 77.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 16:49:27,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 480.47 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 105.0 MB in the end (delta: 20.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-12-23 16:49:27,614 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.22 ms. Allocated memory is still 151.0 MB. Free memory was 105.0 MB in the beginning and 103.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 16:49:27,614 INFO L168 Benchmark]: Boogie Preprocessor took 25.62 ms. Allocated memory is still 151.0 MB. Free memory was 103.2 MB in the beginning and 102.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 16:49:27,615 INFO L168 Benchmark]: RCFGBuilder took 475.27 ms. Allocated memory is still 151.0 MB. Free memory was 102.0 MB in the beginning and 121.2 MB in the end (delta: -19.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2020-12-23 16:49:27,616 INFO L168 Benchmark]: TraceAbstraction took 5040.16 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 120.7 MB in the beginning and 135.0 MB in the end (delta: -14.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2020-12-23 16:49:27,616 INFO L168 Benchmark]: Witness Printer took 58.73 ms. Allocated memory is still 181.4 MB. Free memory was 135.0 MB in the beginning and 132.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 16:49:27,620 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 124.5 MB in the end (delta: 77.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 480.47 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 105.0 MB in the end (delta: 20.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.22 ms. Allocated memory is still 151.0 MB. Free memory was 105.0 MB in the beginning and 103.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.62 ms. Allocated memory is still 151.0 MB. Free memory was 103.2 MB in the beginning and 102.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 475.27 ms. Allocated memory is still 151.0 MB. Free memory was 102.0 MB in the beginning and 121.2 MB in the end (delta: -19.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5040.16 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 120.7 MB in the beginning and 135.0 MB in the end (delta: -14.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * Witness Printer took 58.73 ms. Allocated memory is still 181.4 MB. Free memory was 135.0 MB in the beginning and 132.1 MB in the end (delta: 2.9 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: 4.9s, 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, 1.6s 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, 1.9s 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...