/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_io_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:39:30,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:39:30,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:39:30,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 05:39:30,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:39:30,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:39:30,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:39:30,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:39:30,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:39:30,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:39:30,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:39:30,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:39:30,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:39:30,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:39:30,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:39:30,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:39:30,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:39:30,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 05:39:30,333 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:39:30,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:39:30,335 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:39:30,335 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:39:30,335 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:39:30,336 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:39:30,336 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:39:30,336 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:39:30,336 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:39:30,336 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:39:30,337 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:39:30,338 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:39:30,338 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:39:30,338 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:39:30,338 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:39:30,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:39:30,339 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:39:30,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:39:30,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:39:30,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:39:30,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:39:30,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:39:30,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:39:30,340 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:39:30,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:39:30,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:39:30,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:39:30,341 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:39:30,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:39:30,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:39:30,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:39:30,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:39:30,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:39:30,342 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:39:30,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:39:30,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:39:30,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:39:30,343 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:39:30,636 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:39:30,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:39:30,663 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:39:30,665 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:39:30,665 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:39:30,666 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_io_1.c [2019-11-24 05:39:30,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/157972948/72ab0136099e49bcbf3377b12ed8c70b/FLAG645080fb0 [2019-11-24 05:39:31,269 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:39:31,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_io_1.c [2019-11-24 05:39:31,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/157972948/72ab0136099e49bcbf3377b12ed8c70b/FLAG645080fb0 [2019-11-24 05:39:31,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/157972948/72ab0136099e49bcbf3377b12ed8c70b [2019-11-24 05:39:31,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:39:31,602 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:39:31,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:39:31,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:39:31,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:39:31,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:39:31" (1/1) ... [2019-11-24 05:39:31,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30764b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:31, skipping insertion in model container [2019-11-24 05:39:31,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:39:31" (1/1) ... [2019-11-24 05:39:31,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:39:31,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:39:31,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:39:31,935 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:39:32,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:39:32,096 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:39:32,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:32 WrapperNode [2019-11-24 05:39:32,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:39:32,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:39:32,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:39:32,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:39:32,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:32" (1/1) ... [2019-11-24 05:39:32,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:32" (1/1) ... [2019-11-24 05:39:32,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:39:32,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:39:32,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:39:32,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:39:32,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:32" (1/1) ... [2019-11-24 05:39:32,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:32" (1/1) ... [2019-11-24 05:39:32,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:32" (1/1) ... [2019-11-24 05:39:32,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:32" (1/1) ... [2019-11-24 05:39:32,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:32" (1/1) ... [2019-11-24 05:39:32,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:32" (1/1) ... [2019-11-24 05:39:32,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:32" (1/1) ... [2019-11-24 05:39:32,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:39:32,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:39:32,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:39:32,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:39:32,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:32" (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 [2019-11-24 05:39:32,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:39:32,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:39:32,812 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:39:32,812 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-24 05:39:32,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:39:32 BoogieIcfgContainer [2019-11-24 05:39:32,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:39:32,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:39:32,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:39:32,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:39:32,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:39:31" (1/3) ... [2019-11-24 05:39:32,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb49ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:39:32, skipping insertion in model container [2019-11-24 05:39:32,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:39:32" (2/3) ... [2019-11-24 05:39:32,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb49ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:39:32, skipping insertion in model container [2019-11-24 05:39:32,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:39:32" (3/3) ... [2019-11-24 05:39:32,822 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2019-11-24 05:39:32,832 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:39:32,839 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 05:39:32,851 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 05:39:32,878 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:39:32,878 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:39:32,879 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:39:32,879 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:39:32,879 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:39:32,879 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:39:32,879 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:39:32,880 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:39:32,895 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2019-11-24 05:39:32,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:39:32,900 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:39:32,901 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:39:32,901 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:39:32,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:39:32,907 INFO L82 PathProgramCache]: Analyzing trace with hash -162000591, now seen corresponding path program 1 times [2019-11-24 05:39:32,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:39:32,916 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081914996] [2019-11-24 05:39:32,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:39:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:39:33,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:39:33,048 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081914996] [2019-11-24 05:39:33,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:39:33,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:39:33,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400187317] [2019-11-24 05:39:33,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:39:33,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:39:33,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:39:33,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:39:33,074 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 2 states. [2019-11-24 05:39:33,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:39:33,104 INFO L93 Difference]: Finished difference Result 127 states and 241 transitions. [2019-11-24 05:39:33,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:39:33,106 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:39:33,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:39:33,119 INFO L225 Difference]: With dead ends: 127 [2019-11-24 05:39:33,119 INFO L226 Difference]: Without dead ends: 56 [2019-11-24 05:39:33,123 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:39:33,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-24 05:39:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-11-24 05:39:33,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-24 05:39:33,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2019-11-24 05:39:33,193 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 86 transitions. Word has length 8 [2019-11-24 05:39:33,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:39:33,194 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 86 transitions. [2019-11-24 05:39:33,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:39:33,195 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 86 transitions. [2019-11-24 05:39:33,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 05:39:33,197 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:39:33,197 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:39:33,198 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:39:33,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:39:33,198 INFO L82 PathProgramCache]: Analyzing trace with hash -194557569, now seen corresponding path program 1 times [2019-11-24 05:39:33,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:39:33,199 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933132712] [2019-11-24 05:39:33,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:39:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:39:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:39:33,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933132712] [2019-11-24 05:39:33,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:39:33,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:39:33,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430029054] [2019-11-24 05:39:33,314 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:39:33,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:39:33,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:39:33,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:39:33,316 INFO L87 Difference]: Start difference. First operand 56 states and 86 transitions. Second operand 3 states. [2019-11-24 05:39:33,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:39:33,389 INFO L93 Difference]: Finished difference Result 114 states and 175 transitions. [2019-11-24 05:39:33,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:39:33,390 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 05:39:33,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:39:33,392 INFO L225 Difference]: With dead ends: 114 [2019-11-24 05:39:33,393 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 05:39:33,394 INFO L630 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 [2019-11-24 05:39:33,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 05:39:33,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-24 05:39:33,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-24 05:39:33,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 89 transitions. [2019-11-24 05:39:33,411 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 89 transitions. Word has length 9 [2019-11-24 05:39:33,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:39:33,412 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 89 transitions. [2019-11-24 05:39:33,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:39:33,412 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 89 transitions. [2019-11-24 05:39:33,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-24 05:39:33,414 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:39:33,415 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:39:33,415 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:39:33,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:39:33,416 INFO L82 PathProgramCache]: Analyzing trace with hash -694410156, now seen corresponding path program 1 times [2019-11-24 05:39:33,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:39:33,417 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198321307] [2019-11-24 05:39:33,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:39:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:39:33,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:39:33,504 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198321307] [2019-11-24 05:39:33,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:39:33,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:39:33,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249794688] [2019-11-24 05:39:33,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:39:33,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:39:33,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:39:33,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:39:33,509 INFO L87 Difference]: Start difference. First operand 59 states and 89 transitions. Second operand 3 states. [2019-11-24 05:39:33,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:39:33,568 INFO L93 Difference]: Finished difference Result 108 states and 164 transitions. [2019-11-24 05:39:33,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:39:33,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-11-24 05:39:33,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:39:33,570 INFO L225 Difference]: With dead ends: 108 [2019-11-24 05:39:33,570 INFO L226 Difference]: Without dead ends: 51 [2019-11-24 05:39:33,571 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:39:33,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-24 05:39:33,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-11-24 05:39:33,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-24 05:39:33,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 75 transitions. [2019-11-24 05:39:33,577 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 75 transitions. Word has length 14 [2019-11-24 05:39:33,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:39:33,578 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 75 transitions. [2019-11-24 05:39:33,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:39:33,578 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 75 transitions. [2019-11-24 05:39:33,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-24 05:39:33,579 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:39:33,579 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:39:33,580 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:39:33,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:39:33,580 INFO L82 PathProgramCache]: Analyzing trace with hash 905287082, now seen corresponding path program 1 times [2019-11-24 05:39:33,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:39:33,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694237515] [2019-11-24 05:39:33,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:39:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:39:33,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:39:33,624 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694237515] [2019-11-24 05:39:33,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:39:33,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:39:33,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28981520] [2019-11-24 05:39:33,625 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:39:33,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:39:33,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:39:33,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:39:33,626 INFO L87 Difference]: Start difference. First operand 51 states and 75 transitions. Second operand 3 states. [2019-11-24 05:39:33,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:39:33,718 INFO L93 Difference]: Finished difference Result 135 states and 205 transitions. [2019-11-24 05:39:33,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:39:33,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-11-24 05:39:33,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:39:33,720 INFO L225 Difference]: With dead ends: 135 [2019-11-24 05:39:33,720 INFO L226 Difference]: Without dead ends: 89 [2019-11-24 05:39:33,721 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:39:33,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-11-24 05:39:33,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2019-11-24 05:39:33,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-11-24 05:39:33,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 127 transitions. [2019-11-24 05:39:33,739 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 127 transitions. Word has length 19 [2019-11-24 05:39:33,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:39:33,740 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 127 transitions. [2019-11-24 05:39:33,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:39:33,740 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 127 transitions. [2019-11-24 05:39:33,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-24 05:39:33,742 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:39:33,742 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:39:33,743 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:39:33,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:39:33,744 INFO L82 PathProgramCache]: Analyzing trace with hash 264332961, now seen corresponding path program 1 times [2019-11-24 05:39:33,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:39:33,744 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130217139] [2019-11-24 05:39:33,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:39:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:39:33,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:39:33,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130217139] [2019-11-24 05:39:33,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:39:33,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:39:33,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318137453] [2019-11-24 05:39:33,825 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:39:33,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:39:33,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:39:33,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:39:33,826 INFO L87 Difference]: Start difference. First operand 86 states and 127 transitions. Second operand 3 states. [2019-11-24 05:39:33,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:39:33,888 INFO L93 Difference]: Finished difference Result 175 states and 257 transitions. [2019-11-24 05:39:33,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:39:33,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-11-24 05:39:33,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:39:33,890 INFO L225 Difference]: With dead ends: 175 [2019-11-24 05:39:33,891 INFO L226 Difference]: Without dead ends: 96 [2019-11-24 05:39:33,895 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:39:33,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-11-24 05:39:33,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2019-11-24 05:39:33,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-11-24 05:39:33,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 135 transitions. [2019-11-24 05:39:33,912 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 135 transitions. Word has length 20 [2019-11-24 05:39:33,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:39:33,912 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 135 transitions. [2019-11-24 05:39:33,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:39:33,913 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 135 transitions. [2019-11-24 05:39:33,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-24 05:39:33,930 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:39:33,930 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:39:33,930 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:39:33,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:39:33,931 INFO L82 PathProgramCache]: Analyzing trace with hash 948672522, now seen corresponding path program 1 times [2019-11-24 05:39:33,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:39:33,932 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488562062] [2019-11-24 05:39:33,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:39:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:39:33,999 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:39:34,000 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488562062] [2019-11-24 05:39:34,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:39:34,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:39:34,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321433294] [2019-11-24 05:39:34,001 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:39:34,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:39:34,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:39:34,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:39:34,002 INFO L87 Difference]: Start difference. First operand 94 states and 135 transitions. Second operand 3 states. [2019-11-24 05:39:34,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:39:34,027 INFO L93 Difference]: Finished difference Result 159 states and 229 transitions. [2019-11-24 05:39:34,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:39:34,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-11-24 05:39:34,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:39:34,028 INFO L225 Difference]: With dead ends: 159 [2019-11-24 05:39:34,029 INFO L226 Difference]: Without dead ends: 72 [2019-11-24 05:39:34,029 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:39:34,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-11-24 05:39:34,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2019-11-24 05:39:34,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-24 05:39:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 100 transitions. [2019-11-24 05:39:34,036 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 100 transitions. Word has length 31 [2019-11-24 05:39:34,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:39:34,037 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 100 transitions. [2019-11-24 05:39:34,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:39:34,037 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 100 transitions. [2019-11-24 05:39:34,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-24 05:39:34,038 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:39:34,038 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:39:34,038 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:39:34,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:39:34,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1609281601, now seen corresponding path program 1 times [2019-11-24 05:39:34,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:39:34,039 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531566672] [2019-11-24 05:39:34,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:39:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:39:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:39:34,103 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531566672] [2019-11-24 05:39:34,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:39:34,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:39:34,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055651429] [2019-11-24 05:39:34,105 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 05:39:34,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:39:34,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 05:39:34,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 05:39:34,105 INFO L87 Difference]: Start difference. First operand 72 states and 100 transitions. Second operand 4 states. [2019-11-24 05:39:34,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:39:34,154 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2019-11-24 05:39:34,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 05:39:34,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-11-24 05:39:34,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:39:34,155 INFO L225 Difference]: With dead ends: 75 [2019-11-24 05:39:34,155 INFO L226 Difference]: Without dead ends: 0 [2019-11-24 05:39:34,156 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 [2019-11-24 05:39:34,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-24 05:39:34,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-24 05:39:34,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-24 05:39:34,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-24 05:39:34,156 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2019-11-24 05:39:34,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:39:34,157 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-24 05:39:34,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 05:39:34,157 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-24 05:39:34,157 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-24 05:39:34,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-24 05:39:34,255 INFO L444 ceAbstractionStarter]: For program point L36(lines 36 47) no Hoare annotation was computed. [2019-11-24 05:39:34,256 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-24 05:39:34,256 INFO L444 ceAbstractionStarter]: For program point L86(lines 86 101) no Hoare annotation was computed. [2019-11-24 05:39:34,256 INFO L444 ceAbstractionStarter]: For program point L53(lines 53 104) no Hoare annotation was computed. [2019-11-24 05:39:34,256 INFO L444 ceAbstractionStarter]: For program point L202(lines 202 217) no Hoare annotation was computed. [2019-11-24 05:39:34,256 INFO L444 ceAbstractionStarter]: For program point L70(lines 70 85) no Hoare annotation was computed. [2019-11-24 05:39:34,256 INFO L444 ceAbstractionStarter]: For program point L318(lines 318 333) no Hoare annotation was computed. [2019-11-24 05:39:34,256 INFO L444 ceAbstractionStarter]: For program point L186(lines 186 201) no Hoare annotation was computed. [2019-11-24 05:39:34,257 INFO L444 ceAbstractionStarter]: For program point L54(lines 54 69) no Hoare annotation was computed. [2019-11-24 05:39:34,257 INFO L440 ceAbstractionStarter]: At program point L335(lines 23 339) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~this_sink~0 0))) (or (and .cse0 (= ULTIMATE.start_main_~q~0 2)) (and (or (<= (+ ULTIMATE.start_main_~this_sink~0 1) 0) (<= 1 ULTIMATE.start_main_~this_sink~0)) (<= 3 ULTIMATE.start_main_~q~0)) (and .cse0 (= ULTIMATE.start_main_~q~0 0)))) [2019-11-24 05:39:34,257 INFO L444 ceAbstractionStarter]: For program point L302(lines 302 317) no Hoare annotation was computed. [2019-11-24 05:39:34,257 INFO L444 ceAbstractionStarter]: For program point L170(lines 170 185) no Hoare annotation was computed. [2019-11-24 05:39:34,257 INFO L444 ceAbstractionStarter]: For program point L286(lines 286 301) no Hoare annotation was computed. [2019-11-24 05:39:34,257 INFO L444 ceAbstractionStarter]: For program point L154(lines 154 169) no Hoare annotation was computed. [2019-11-24 05:39:34,258 INFO L444 ceAbstractionStarter]: For program point L88(lines 88 99) no Hoare annotation was computed. [2019-11-24 05:39:34,258 INFO L444 ceAbstractionStarter]: For program point L270(lines 270 285) no Hoare annotation was computed. [2019-11-24 05:39:34,258 INFO L444 ceAbstractionStarter]: For program point L204(lines 204 215) no Hoare annotation was computed. [2019-11-24 05:39:34,258 INFO L444 ceAbstractionStarter]: For program point L138(lines 138 153) no Hoare annotation was computed. [2019-11-24 05:39:34,258 INFO L444 ceAbstractionStarter]: For program point L105(lines 105 220) no Hoare annotation was computed. [2019-11-24 05:39:34,258 INFO L444 ceAbstractionStarter]: For program point L72(lines 72 83) no Hoare annotation was computed. [2019-11-24 05:39:34,258 INFO L444 ceAbstractionStarter]: For program point L320(lines 320 331) no Hoare annotation was computed. [2019-11-24 05:39:34,258 INFO L444 ceAbstractionStarter]: For program point L254(lines 254 269) no Hoare annotation was computed. [2019-11-24 05:39:34,259 INFO L444 ceAbstractionStarter]: For program point L221(lines 221 336) no Hoare annotation was computed. [2019-11-24 05:39:34,259 INFO L444 ceAbstractionStarter]: For program point L188(lines 188 199) no Hoare annotation was computed. [2019-11-24 05:39:34,259 INFO L444 ceAbstractionStarter]: For program point L122(lines 122 137) no Hoare annotation was computed. [2019-11-24 05:39:34,259 INFO L444 ceAbstractionStarter]: For program point L56(lines 56 67) no Hoare annotation was computed. [2019-11-24 05:39:34,259 INFO L440 ceAbstractionStarter]: At program point L23-2(lines 23 339) the Hoare annotation is: (or (and (or (<= (+ ULTIMATE.start_main_~this_sink~0 1) 0) (<= 1 ULTIMATE.start_main_~this_sink~0)) (<= 3 ULTIMATE.start_main_~q~0)) (and (= ULTIMATE.start_main_~this_sink~0 0) (= ULTIMATE.start_main_~q~0 0))) [2019-11-24 05:39:34,259 INFO L444 ceAbstractionStarter]: For program point L23-3(lines 23 339) no Hoare annotation was computed. [2019-11-24 05:39:34,260 INFO L444 ceAbstractionStarter]: For program point L304(lines 304 315) no Hoare annotation was computed. [2019-11-24 05:39:34,260 INFO L444 ceAbstractionStarter]: For program point L238(lines 238 253) no Hoare annotation was computed. [2019-11-24 05:39:34,260 INFO L444 ceAbstractionStarter]: For program point L172(lines 172 183) no Hoare annotation was computed. [2019-11-24 05:39:34,260 INFO L444 ceAbstractionStarter]: For program point L106(lines 106 121) no Hoare annotation was computed. [2019-11-24 05:39:34,260 INFO L444 ceAbstractionStarter]: For program point L40(lines 40 42) no Hoare annotation was computed. [2019-11-24 05:39:34,260 INFO L444 ceAbstractionStarter]: For program point L288(lines 288 299) no Hoare annotation was computed. [2019-11-24 05:39:34,260 INFO L444 ceAbstractionStarter]: For program point L222(lines 222 237) no Hoare annotation was computed. [2019-11-24 05:39:34,260 INFO L444 ceAbstractionStarter]: For program point L156(lines 156 167) no Hoare annotation was computed. [2019-11-24 05:39:34,261 INFO L444 ceAbstractionStarter]: For program point L272(lines 272 283) no Hoare annotation was computed. [2019-11-24 05:39:34,261 INFO L444 ceAbstractionStarter]: For program point L140(lines 140 151) no Hoare annotation was computed. [2019-11-24 05:39:34,261 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-24 05:39:34,261 INFO L444 ceAbstractionStarter]: For program point L256(lines 256 267) no Hoare annotation was computed. [2019-11-24 05:39:34,261 INFO L444 ceAbstractionStarter]: For program point L124(lines 124 135) no Hoare annotation was computed. [2019-11-24 05:39:34,261 INFO L444 ceAbstractionStarter]: For program point L240(lines 240 251) no Hoare annotation was computed. [2019-11-24 05:39:34,261 INFO L444 ceAbstractionStarter]: For program point L108(lines 108 119) no Hoare annotation was computed. [2019-11-24 05:39:34,261 INFO L444 ceAbstractionStarter]: For program point L224(lines 224 235) no Hoare annotation was computed. [2019-11-24 05:39:34,262 INFO L444 ceAbstractionStarter]: For program point L92(lines 92 94) no Hoare annotation was computed. [2019-11-24 05:39:34,262 INFO L444 ceAbstractionStarter]: For program point L208(lines 208 210) no Hoare annotation was computed. [2019-11-24 05:39:34,262 INFO L444 ceAbstractionStarter]: For program point L76(lines 76 78) no Hoare annotation was computed. [2019-11-24 05:39:34,262 INFO L444 ceAbstractionStarter]: For program point L324(lines 324 326) no Hoare annotation was computed. [2019-11-24 05:39:34,262 INFO L444 ceAbstractionStarter]: For program point L192(lines 192 194) no Hoare annotation was computed. [2019-11-24 05:39:34,262 INFO L444 ceAbstractionStarter]: For program point L60(lines 60 62) no Hoare annotation was computed. [2019-11-24 05:39:34,262 INFO L444 ceAbstractionStarter]: For program point L308(lines 308 310) no Hoare annotation was computed. [2019-11-24 05:39:34,263 INFO L444 ceAbstractionStarter]: For program point L176(lines 176 178) no Hoare annotation was computed. [2019-11-24 05:39:34,263 INFO L440 ceAbstractionStarter]: At program point L325(lines 13 344) the Hoare annotation is: false [2019-11-24 05:39:34,263 INFO L444 ceAbstractionStarter]: For program point L292(lines 292 294) no Hoare annotation was computed. [2019-11-24 05:39:34,263 INFO L444 ceAbstractionStarter]: For program point L160(lines 160 162) no Hoare annotation was computed. [2019-11-24 05:39:34,263 INFO L444 ceAbstractionStarter]: For program point L276(lines 276 278) no Hoare annotation was computed. [2019-11-24 05:39:34,263 INFO L444 ceAbstractionStarter]: For program point L144(lines 144 146) no Hoare annotation was computed. [2019-11-24 05:39:34,263 INFO L444 ceAbstractionStarter]: For program point L260(lines 260 262) no Hoare annotation was computed. [2019-11-24 05:39:34,264 INFO L444 ceAbstractionStarter]: For program point L128(lines 128 130) no Hoare annotation was computed. [2019-11-24 05:39:34,264 INFO L444 ceAbstractionStarter]: For program point L244(lines 244 246) no Hoare annotation was computed. [2019-11-24 05:39:34,264 INFO L444 ceAbstractionStarter]: For program point L112(lines 112 114) no Hoare annotation was computed. [2019-11-24 05:39:34,264 INFO L447 ceAbstractionStarter]: At program point L13(lines 13 344) the Hoare annotation is: true [2019-11-24 05:39:34,264 INFO L444 ceAbstractionStarter]: For program point L228(lines 228 230) no Hoare annotation was computed. [2019-11-24 05:39:34,264 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 343) no Hoare annotation was computed. [2019-11-24 05:39:34,265 INFO L444 ceAbstractionStarter]: For program point L33(lines 33 52) no Hoare annotation was computed. [2019-11-24 05:39:34,265 INFO L444 ceAbstractionStarter]: For program point L34(lines 34 49) no Hoare annotation was computed. [2019-11-24 05:39:34,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 05:39:34 BoogieIcfgContainer [2019-11-24 05:39:34,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 05:39:34,284 INFO L168 Benchmark]: Toolchain (without parser) took 2681.75 ms. Allocated memory was 145.2 MB in the beginning and 235.4 MB in the end (delta: 90.2 MB). Free memory was 103.0 MB in the beginning and 164.0 MB in the end (delta: -61.0 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2019-11-24 05:39:34,285 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-24 05:39:34,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 494.92 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 102.8 MB in the beginning and 180.0 MB in the end (delta: -77.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2019-11-24 05:39:34,287 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.66 ms. Allocated memory is still 202.4 MB. Free memory was 179.4 MB in the beginning and 177.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-11-24 05:39:34,288 INFO L168 Benchmark]: Boogie Preprocessor took 46.13 ms. Allocated memory is still 202.4 MB. Free memory was 177.4 MB in the beginning and 176.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-11-24 05:39:34,288 INFO L168 Benchmark]: RCFGBuilder took 620.23 ms. Allocated memory is still 202.4 MB. Free memory was 176.0 MB in the beginning and 148.2 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2019-11-24 05:39:34,289 INFO L168 Benchmark]: TraceAbstraction took 1466.91 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 147.5 MB in the beginning and 164.0 MB in the end (delta: -16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2019-11-24 05:39:34,294 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 494.92 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 102.8 MB in the beginning and 180.0 MB in the end (delta: -77.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.66 ms. Allocated memory is still 202.4 MB. Free memory was 179.4 MB in the beginning and 177.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.13 ms. Allocated memory is still 202.4 MB. Free memory was 177.4 MB in the beginning and 176.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 620.23 ms. Allocated memory is still 202.4 MB. Free memory was 176.0 MB in the beginning and 148.2 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1466.91 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 147.5 MB in the beginning and 164.0 MB in the end (delta: -16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 343]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((this_sink + 1 <= 0 || 1 <= this_sink) && 3 <= q) || (this_sink == 0 && q == 0) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((this_sink == 0 && q == 2) || ((this_sink + 1 <= 0 || 1 <= this_sink) && 3 <= q)) || (this_sink == 0 && q == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 66 locations, 1 error locations. Result: SAFE, OverallTime: 1.3s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 512 SDtfs, 190 SDslu, 255 SDs, 0 SdLazy, 88 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 51 HoareAnnotationTreeSize, 4 FomulaSimplifications, 34 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 9 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 6811 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 27/27 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...