/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loops/sum01_bug02.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:03:47,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:03:47,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:03:47,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-07 04:03:47,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:03:47,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:03:47,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:03:47,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:03:47,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:03:47,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:03:47,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:03:47,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:03:47,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:03:47,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:03:47,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:03:47,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:03:47,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:03:47,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:03:47,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:03:47,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:03:47,702 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:03:47,727 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:03:47,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:03:47,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:03:47,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:03:47,730 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:03:47,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:03:47,735 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:03:47,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:03:47,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:03:47,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:03:47,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:03:47,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:03:47,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:03:47,736 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:03:47,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:03:47,737 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:03:47,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:03:47,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:03:47,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:03:47,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:03:47,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:03:47,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:03:47,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:03:47,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:03:47,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:03:47,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:03:47,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:03:47,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:03:47,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:03:47,999 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:03:48,012 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:03:48,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:03:48,016 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:03:48,017 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:03:48,017 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01_bug02.i [2019-11-07 04:03:48,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c27a5fa18/a27c1b8b152b47daa69f82828006a0cd/FLAG30143dbd1 [2019-11-07 04:03:48,470 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:03:48,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01_bug02.i [2019-11-07 04:03:48,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c27a5fa18/a27c1b8b152b47daa69f82828006a0cd/FLAG30143dbd1 [2019-11-07 04:03:48,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c27a5fa18/a27c1b8b152b47daa69f82828006a0cd [2019-11-07 04:03:48,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:03:48,956 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:03:48,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:03:48,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:03:48,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:03:48,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:03:48" (1/1) ... [2019-11-07 04:03:48,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e5d51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:48, skipping insertion in model container [2019-11-07 04:03:48,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:03:48" (1/1) ... [2019-11-07 04:03:48,996 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:03:49,036 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:03:49,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:03:49,312 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:03:49,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:03:49,348 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:03:49,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:49 WrapperNode [2019-11-07 04:03:49,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:03:49,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:03:49,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:03:49,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:03:49,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:49" (1/1) ... [2019-11-07 04:03:49,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:49" (1/1) ... [2019-11-07 04:03:49,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:49" (1/1) ... [2019-11-07 04:03:49,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:49" (1/1) ... [2019-11-07 04:03:49,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:49" (1/1) ... [2019-11-07 04:03:49,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:49" (1/1) ... [2019-11-07 04:03:49,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:49" (1/1) ... [2019-11-07 04:03:49,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:03:49,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:03:49,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:03:49,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:03:49,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:03:49,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:03:49,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:03:49,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 04:03:49,537 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:03:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:03:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:03:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-11-07 04:03:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:03:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:03:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:03:49,786 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:03:49,787 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 04:03:49,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:03:49 BoogieIcfgContainer [2019-11-07 04:03:49,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:03:49,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:03:49,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:03:49,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:03:49,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:03:48" (1/3) ... [2019-11-07 04:03:49,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9719877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:03:49, skipping insertion in model container [2019-11-07 04:03:49,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:49" (2/3) ... [2019-11-07 04:03:49,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9719877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:03:49, skipping insertion in model container [2019-11-07 04:03:49,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:03:49" (3/3) ... [2019-11-07 04:03:49,798 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01_bug02.i [2019-11-07 04:03:49,808 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:03:49,831 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:03:49,849 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:03:49,870 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:03:49,870 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:03:49,871 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:03:49,871 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:03:49,871 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:03:49,871 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:03:49,871 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:03:49,872 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:03:49,889 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-11-07 04:03:49,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 04:03:49,893 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:03:49,894 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:03:49,895 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:03:49,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:03:49,900 INFO L82 PathProgramCache]: Analyzing trace with hash -123871013, now seen corresponding path program 1 times [2019-11-07 04:03:49,907 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:03:49,907 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125609882] [2019-11-07 04:03:49,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:03:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:03:50,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:03:50,103 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125609882] [2019-11-07 04:03:50,104 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:03:50,104 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:03:50,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787466345] [2019-11-07 04:03:50,110 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:03:50,111 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:03:50,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:03:50,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:03:50,123 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2019-11-07 04:03:50,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:03:50,213 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-11-07 04:03:50,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:03:50,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-07 04:03:50,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:03:50,222 INFO L225 Difference]: With dead ends: 33 [2019-11-07 04:03:50,222 INFO L226 Difference]: Without dead ends: 12 [2019-11-07 04:03:50,225 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:03:50,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-07 04:03:50,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-07 04:03:50,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-07 04:03:50,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-07 04:03:50,258 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-11-07 04:03:50,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:03:50,259 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-07 04:03:50,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:03:50,260 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-07 04:03:50,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-07 04:03:50,260 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:03:50,261 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:03:50,261 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:03:50,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:03:50,262 INFO L82 PathProgramCache]: Analyzing trace with hash 432321820, now seen corresponding path program 1 times [2019-11-07 04:03:50,262 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:03:50,262 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950353810] [2019-11-07 04:03:50,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:03:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:03:50,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:03:50,440 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950353810] [2019-11-07 04:03:50,440 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346115029] [2019-11-07 04:03:50,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2019-11-07 04:03:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:03:50,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-07 04:03:50,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:03:50,563 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:03:50,628 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:03:50,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:03:50,666 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:03:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:03:50,851 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1317803659] [2019-11-07 04:03:50,877 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-11-07 04:03:50,877 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:03:50,886 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:03:50,893 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:03:50,894 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:03:50,946 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 04:03:51,054 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-11-07 04:03:51,065 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-11-07 04:03:51,066 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:03:51,177 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:03:51,177 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 5] total 19 [2019-11-07 04:03:51,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016607124] [2019-11-07 04:03:51,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-07 04:03:51,181 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:03:51,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-07 04:03:51,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2019-11-07 04:03:51,185 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 19 states. [2019-11-07 04:03:51,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:03:51,469 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-11-07 04:03:51,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 04:03:51,470 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 11 [2019-11-07 04:03:51,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:03:51,471 INFO L225 Difference]: With dead ends: 20 [2019-11-07 04:03:51,471 INFO L226 Difference]: Without dead ends: 14 [2019-11-07 04:03:51,472 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2019-11-07 04:03:51,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-07 04:03:51,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-07 04:03:51,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-07 04:03:51,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-07 04:03:51,480 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2019-11-07 04:03:51,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:03:51,481 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-07 04:03:51,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-07 04:03:51,481 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-07 04:03:51,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-07 04:03:51,482 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:03:51,482 INFO L410 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:03:51,683 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:03:51,683 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:03:51,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:03:51,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1875169028, now seen corresponding path program 2 times [2019-11-07 04:03:51,685 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:03:51,686 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201642662] [2019-11-07 04:03:51,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:03:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:03:51,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:03:51,963 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201642662] [2019-11-07 04:03:51,963 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286222201] [2019-11-07 04:03:51,964 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2019-11-07 04:03:52,021 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-07 04:03:52,021 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 04:03:52,024 WARN L254 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-07 04:03:52,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:03:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:03:52,197 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:03:52,550 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-11-07 04:03:52,742 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 35 [2019-11-07 04:03:52,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:03:52,759 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1732227120] [2019-11-07 04:03:52,761 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-11-07 04:03:52,761 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:03:52,762 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:03:52,762 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:03:52,762 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:03:52,795 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 04:03:52,875 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-11-07 04:03:52,880 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-11-07 04:03:52,881 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:03:52,996 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:03:52,996 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 5] total 25 [2019-11-07 04:03:52,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937910861] [2019-11-07 04:03:52,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-07 04:03:52,998 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:03:52,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-07 04:03:52,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2019-11-07 04:03:52,999 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 25 states. [2019-11-07 04:03:53,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:03:53,695 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2019-11-07 04:03:53,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 04:03:53,696 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 13 [2019-11-07 04:03:53,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:03:53,696 INFO L225 Difference]: With dead ends: 24 [2019-11-07 04:03:53,697 INFO L226 Difference]: Without dead ends: 17 [2019-11-07 04:03:53,699 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=165, Invalid=891, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 04:03:53,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-07 04:03:53,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-07 04:03:53,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-07 04:03:53,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-11-07 04:03:53,710 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2019-11-07 04:03:53,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:03:53,710 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-11-07 04:03:53,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-07 04:03:53,711 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-11-07 04:03:53,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-07 04:03:53,712 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:03:53,713 INFO L410 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:03:53,914 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:03:53,914 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:03:53,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:03:53,915 INFO L82 PathProgramCache]: Analyzing trace with hash 468377915, now seen corresponding path program 3 times [2019-11-07 04:03:53,915 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:03:53,916 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115941508] [2019-11-07 04:03:53,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:03:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-07 04:03:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-07 04:03:54,070 INFO L172 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-07 04:03:54,070 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-07 04:03:54,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:03:54 BoogieIcfgContainer [2019-11-07 04:03:54,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 04:03:54,113 INFO L168 Benchmark]: Toolchain (without parser) took 5157.48 ms. Allocated memory was 138.9 MB in the beginning and 244.3 MB in the end (delta: 105.4 MB). Free memory was 102.4 MB in the beginning and 212.2 MB in the end (delta: -109.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-11-07 04:03:54,118 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 04:03:54,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.39 ms. Allocated memory is still 138.9 MB. Free memory was 102.2 MB in the beginning and 93.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-11-07 04:03:54,121 INFO L168 Benchmark]: Boogie Preprocessor took 127.36 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 93.0 MB in the beginning and 180.9 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2019-11-07 04:03:54,122 INFO L168 Benchmark]: RCFGBuilder took 311.15 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 167.0 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-11-07 04:03:54,123 INFO L168 Benchmark]: TraceAbstraction took 4321.52 ms. Allocated memory was 202.4 MB in the beginning and 244.3 MB in the end (delta: 41.9 MB). Free memory was 167.0 MB in the beginning and 212.2 MB in the end (delta: -45.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-11-07 04:03:54,135 INFO L335 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 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 390.39 ms. Allocated memory is still 138.9 MB. Free memory was 102.2 MB in the beginning and 93.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.36 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 93.0 MB in the beginning and 180.9 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 311.15 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 167.0 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4321.52 ms. Allocated memory was 202.4 MB in the beginning and 244.3 MB in the end (delta: 41.9 MB). Free memory was 167.0 MB in the beginning and 212.2 MB in the end (delta: -45.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 VAL [i=1, j=10, n=0, n=6] [L13] COND TRUE i<=n [L14] COND TRUE i