/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/loop-invgen/id_build.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:01:20,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:01:20,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:01:20,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:01:20,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:01:20,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:01:20,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:01:20,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:01:20,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:01:20,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:01:20,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:01:20,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:01:20,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:01:20,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:01:20,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:01:20,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:01:20,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:01:20,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:01:20,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:01:20,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:01:20,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:01:20,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:01:20,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:01:20,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:01:20,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:01:20,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:01:20,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:01:20,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:01:20,778 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 04:01:20,792 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:01:20,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:01:20,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:01:20,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:01:20,794 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:01:20,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:01:20,794 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:01:20,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:01:20,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:01:20,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:01:20,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:01:20,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:01:20,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:01:20,796 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:01:20,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:01:20,796 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:01:20,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:01:20,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:01:20,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:01:20,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:01:20,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:01:20,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:01:20,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:01:20,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:01:20,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:01:20,798 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:01:20,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:01:20,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:01:20,799 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 04:01:21,123 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:01:21,143 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:01:21,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:01:21,151 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:01:21,151 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:01:21,152 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2019-11-07 04:01:21,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bba5490e7/4797b08138c5404bb10ed70b6a8c1cc4/FLAG06965d065 [2019-11-07 04:01:21,727 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:01:21,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2019-11-07 04:01:21,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bba5490e7/4797b08138c5404bb10ed70b6a8c1cc4/FLAG06965d065 [2019-11-07 04:01:22,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bba5490e7/4797b08138c5404bb10ed70b6a8c1cc4 [2019-11-07 04:01:22,148 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:01:22,152 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:01:22,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:01:22,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:01:22,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:01:22,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:01:22" (1/1) ... [2019-11-07 04:01:22,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f1c207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:22, skipping insertion in model container [2019-11-07 04:01:22,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:01:22" (1/1) ... [2019-11-07 04:01:22,174 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:01:22,198 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:01:22,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:01:22,389 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:01:22,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:01:22,421 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:01:22,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:22 WrapperNode [2019-11-07 04:01:22,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:01:22,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:01:22,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:01:22,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:01:22,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:22" (1/1) ... [2019-11-07 04:01:22,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:22" (1/1) ... [2019-11-07 04:01:22,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:22" (1/1) ... [2019-11-07 04:01:22,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:22" (1/1) ... [2019-11-07 04:01:22,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:22" (1/1) ... [2019-11-07 04:01:22,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:22" (1/1) ... [2019-11-07 04:01:22,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:22" (1/1) ... [2019-11-07 04:01:22,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:01:22,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:01:22,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:01:22,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:01:22,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:22" (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 04:01:22,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:01:22,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:01:22,589 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:01:22,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:01:22,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 04:01:22,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:01:22,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:01:22,590 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:01:22,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:01:22,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:01:22,811 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:01:22,811 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 04:01:22,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:01:22 BoogieIcfgContainer [2019-11-07 04:01:22,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:01:22,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:01:22,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:01:22,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:01:22,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:01:22" (1/3) ... [2019-11-07 04:01:22,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad98876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:01:22, skipping insertion in model container [2019-11-07 04:01:22,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:22" (2/3) ... [2019-11-07 04:01:22,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad98876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:01:22, skipping insertion in model container [2019-11-07 04:01:22,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:01:22" (3/3) ... [2019-11-07 04:01:22,820 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2019-11-07 04:01:22,829 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:01:22,836 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-07 04:01:22,845 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-07 04:01:22,870 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:01:22,870 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:01:22,870 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:01:22,871 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:01:22,871 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:01:22,871 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:01:22,871 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:01:22,871 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:01:22,887 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-07 04:01:22,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-07 04:01:22,893 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:01:22,894 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:01:22,895 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:01:22,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:01:22,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1351205091, now seen corresponding path program 1 times [2019-11-07 04:01:22,910 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:01:22,910 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117729547] [2019-11-07 04:01:22,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:01:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:23,144 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 04:01:23,145 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117729547] [2019-11-07 04:01:23,147 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:01:23,147 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:01:23,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588027036] [2019-11-07 04:01:23,164 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:01:23,164 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:01:23,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:01:23,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:01:23,208 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2019-11-07 04:01:23,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:01:23,389 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2019-11-07 04:01:23,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:01:23,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-07 04:01:23,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:01:23,409 INFO L225 Difference]: With dead ends: 29 [2019-11-07 04:01:23,409 INFO L226 Difference]: Without dead ends: 17 [2019-11-07 04:01:23,415 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:01:23,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-07 04:01:23,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-07 04:01:23,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-07 04:01:23,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-11-07 04:01:23,469 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 9 [2019-11-07 04:01:23,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:01:23,470 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-11-07 04:01:23,470 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:01:23,471 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-11-07 04:01:23,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-07 04:01:23,472 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:01:23,473 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:01:23,474 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:01:23,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:01:23,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1428063013, now seen corresponding path program 1 times [2019-11-07 04:01:23,475 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:01:23,476 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460017404] [2019-11-07 04:01:23,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:01:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:23,576 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 04:01:23,577 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460017404] [2019-11-07 04:01:23,578 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:01:23,578 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:01:23,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393879424] [2019-11-07 04:01:23,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:01:23,580 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:01:23,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:01:23,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:01:23,583 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 4 states. [2019-11-07 04:01:23,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:01:23,637 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-11-07 04:01:23,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:01:23,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-07 04:01:23,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:01:23,639 INFO L225 Difference]: With dead ends: 18 [2019-11-07 04:01:23,639 INFO L226 Difference]: Without dead ends: 16 [2019-11-07 04:01:23,641 INFO L630 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 [2019-11-07 04:01:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-07 04:01:23,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-11-07 04:01:23,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-07 04:01:23,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-07 04:01:23,651 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2019-11-07 04:01:23,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:01:23,652 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-07 04:01:23,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:01:23,652 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-07 04:01:23,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-07 04:01:23,653 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:01:23,653 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:01:23,655 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:01:23,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:01:23,656 INFO L82 PathProgramCache]: Analyzing trace with hash -2020883031, now seen corresponding path program 1 times [2019-11-07 04:01:23,656 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:01:23,657 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208176438] [2019-11-07 04:01:23,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:01:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:01:23,767 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 04:01:23,769 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208176438] [2019-11-07 04:01:23,769 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:01:23,769 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:01:23,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341377950] [2019-11-07 04:01:23,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:01:23,770 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:01:23,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:01:23,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:01:23,771 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 5 states. [2019-11-07 04:01:23,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:01:23,919 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-11-07 04:01:23,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:01:23,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-07 04:01:23,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:01:23,921 INFO L225 Difference]: With dead ends: 24 [2019-11-07 04:01:23,921 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 04:01:23,922 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:01:23,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 04:01:23,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 04:01:23,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 04:01:23,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 04:01:23,923 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-11-07 04:01:23,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:01:23,923 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 04:01:23,923 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:01:23,923 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 04:01:23,924 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 04:01:23,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 04:01:24,040 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-07 04:01:24,040 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:01:24,040 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:01:24,040 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 04:01:24,041 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 04:01:24,041 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 04:01:24,041 INFO L439 ceAbstractionStarter]: At program point L64(lines 34 84) the Hoare annotation is: (let ((.cse0 (<= 0 main_~main__i~0)) (.cse1 (<= (+ main_~main__i~0 1) main_~main__nlen~0))) (or (and .cse0 (= main_~__VERIFIER_assert__cond~0 1) .cse1) (and .cse0 (not (= main_~__VERIFIER_assert__cond~2 0)) .cse1 (not (= main_~__VERIFIER_assert__cond~0 0))))) [2019-11-07 04:01:24,041 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 8 97) no Hoare annotation was computed. [2019-11-07 04:01:24,042 INFO L443 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2019-11-07 04:01:24,042 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 91) no Hoare annotation was computed. [2019-11-07 04:01:24,042 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 8 97) no Hoare annotation was computed. [2019-11-07 04:01:24,042 INFO L443 ceAbstractionStarter]: For program point L71(lines 71 80) no Hoare annotation was computed. [2019-11-07 04:01:24,042 INFO L443 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2019-11-07 04:01:24,042 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 8 97) the Hoare annotation is: true [2019-11-07 04:01:24,043 INFO L443 ceAbstractionStarter]: For program point L28(lines 28 84) no Hoare annotation was computed. [2019-11-07 04:01:24,043 INFO L443 ceAbstractionStarter]: For program point L59(line 59) no Hoare annotation was computed. [2019-11-07 04:01:24,043 INFO L439 ceAbstractionStarter]: At program point L90(lines 9 97) the Hoare annotation is: (<= 0 main_~main__i~0) [2019-11-07 04:01:24,043 INFO L443 ceAbstractionStarter]: For program point L57(lines 57 65) no Hoare annotation was computed. [2019-11-07 04:01:24,043 INFO L443 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2019-11-07 04:01:24,044 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 30) no Hoare annotation was computed. [2019-11-07 04:01:24,044 INFO L443 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2019-11-07 04:01:24,044 INFO L439 ceAbstractionStarter]: At program point L74(lines 47 82) the Hoare annotation is: (and (<= 0 main_~main__i~0) (not (= main_~__VERIFIER_assert__cond~1 0)) (<= (+ main_~main__i~0 1) main_~main__nlen~0) (not (= main_~__VERIFIER_assert__cond~0 0))) [2019-11-07 04:01:24,044 INFO L443 ceAbstractionStarter]: For program point L41(lines 41 82) no Hoare annotation was computed. [2019-11-07 04:01:24,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:01:24 BoogieIcfgContainer [2019-11-07 04:01:24,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 04:01:24,076 INFO L168 Benchmark]: Toolchain (without parser) took 1922.05 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 103.6 MB in the end (delta: -1.2 MB). Peak memory consumption was 62.3 MB. Max. memory is 7.1 GB. [2019-11-07 04:01:24,078 INFO L168 Benchmark]: CDTParser took 1.37 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-11-07 04:01:24,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.78 ms. Allocated memory is still 137.9 MB. Free memory was 102.2 MB in the beginning and 92.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-11-07 04:01:24,082 INFO L168 Benchmark]: Boogie Preprocessor took 108.67 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 92.5 MB in the beginning and 179.6 MB in the end (delta: -87.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2019-11-07 04:01:24,083 INFO L168 Benchmark]: RCFGBuilder took 281.48 ms. Allocated memory is still 201.3 MB. Free memory was 179.6 MB in the beginning and 166.1 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2019-11-07 04:01:24,085 INFO L168 Benchmark]: TraceAbstraction took 1257.85 ms. Allocated memory is still 201.3 MB. Free memory was 165.5 MB in the beginning and 103.6 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.9 MB. Max. memory is 7.1 GB. [2019-11-07 04:01:24,095 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 267.78 ms. Allocated memory is still 137.9 MB. Free memory was 102.2 MB in the beginning and 92.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.67 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 92.5 MB in the beginning and 179.6 MB in the end (delta: -87.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 281.48 ms. Allocated memory is still 201.3 MB. Free memory was 179.6 MB in the beginning and 166.1 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1257.85 ms. Allocated memory is still 201.3 MB. Free memory was 165.5 MB in the beginning and 103.6 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 59]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 30]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 43]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 0 <= main__i - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((0 <= main__i && !(__VERIFIER_assert__cond == 0)) && main__i + 1 <= main__nlen) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((0 <= main__i && __VERIFIER_assert__cond == 1) && main__i + 1 <= main__nlen) || (((0 <= main__i && !(__VERIFIER_assert__cond == 0)) && main__i + 1 <= main__nlen) && !(__VERIFIER_assert__cond == 0)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 3 error locations. Result: SAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 39 SDtfs, 52 SDslu, 47 SDs, 0 SdLazy, 54 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 12 NumberOfFragments, 54 HoareAnnotationTreeSize, 7 FomulaSimplifications, 156 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 870 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...