/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/eca-rers2012/Problem02_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:31:51,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:31:51,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:31:51,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-23 23:31:51,633 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 [2019-11-23 23:31:51,654 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:31:51,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:31:51,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:31:51,656 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:31:51,656 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:31:51,656 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:31:51,656 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:31:51,656 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:31:51,657 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:31:51,657 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:31:51,658 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:31:51,658 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:31:51,658 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:31:51,659 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:31:51,659 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:31:51,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:31:51,660 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:31:51,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:31:51,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:31:51,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:31:51,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:31:51,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:31:51,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:31:51,661 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:31:51,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:31:51,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:31:51,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:31:51,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:31:51,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:31:51,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:31:51,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:31:51,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:31:51,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:31:51,664 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:31:51,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:31:51,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:31:51,664 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:31:51,665 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:31:51,933 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:31:51,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:31:51,957 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:31:51,958 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:31:51,959 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:31:51,960 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label02.c [2019-11-23 23:31:52,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40743712c/388bde90ef7b4c88b565e8a7783cb72f/FLAG875171330 [2019-11-23 23:31:52,635 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:31:52,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label02.c [2019-11-23 23:31:52,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40743712c/388bde90ef7b4c88b565e8a7783cb72f/FLAG875171330 [2019-11-23 23:31:52,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40743712c/388bde90ef7b4c88b565e8a7783cb72f [2019-11-23 23:31:52,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:31:52,858 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:31:52,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:31:52,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:31:52,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:31:52,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:31:52" (1/1) ... [2019-11-23 23:31:52,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577254a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:52, skipping insertion in model container [2019-11-23 23:31:52,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:31:52" (1/1) ... [2019-11-23 23:31:52,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:31:52,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:31:53,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:31:53,341 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:31:53,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:31:53,602 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:31:53,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:53 WrapperNode [2019-11-23 23:31:53,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:31:53,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:31:53,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:31:53,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:31:53,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:53" (1/1) ... [2019-11-23 23:31:53,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:53" (1/1) ... [2019-11-23 23:31:53,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:31:53,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:31:53,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:31:53,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:31:53,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:53" (1/1) ... [2019-11-23 23:31:53,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:53" (1/1) ... [2019-11-23 23:31:53,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:53" (1/1) ... [2019-11-23 23:31:53,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:53" (1/1) ... [2019-11-23 23:31:53,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:53" (1/1) ... [2019-11-23 23:31:53,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:53" (1/1) ... [2019-11-23 23:31:53,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:53" (1/1) ... [2019-11-23 23:31:53,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:31:53,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:31:53,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:31:53,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:31:53,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:53" (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 [2019-11-23 23:31:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:31:53,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:31:56,086 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:31:56,087 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-23 23:31:56,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:31:56 BoogieIcfgContainer [2019-11-23 23:31:56,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:31:56,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:31:56,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:31:56,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:31:56,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:31:52" (1/3) ... [2019-11-23 23:31:56,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1700ab1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:31:56, skipping insertion in model container [2019-11-23 23:31:56,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:31:53" (2/3) ... [2019-11-23 23:31:56,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1700ab1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:31:56, skipping insertion in model container [2019-11-23 23:31:56,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:31:56" (3/3) ... [2019-11-23 23:31:56,101 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label02.c [2019-11-23 23:31:56,111 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:31:56,121 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:31:56,132 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:31:56,165 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:31:56,165 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:31:56,166 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:31:56,166 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:31:56,166 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:31:56,166 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:31:56,166 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:31:56,166 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:31:56,191 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2019-11-23 23:31:56,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-23 23:31:56,203 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:31:56,204 INFO L410 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1] [2019-11-23 23:31:56,205 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:31:56,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:31:56,212 INFO L82 PathProgramCache]: Analyzing trace with hash 925945737, now seen corresponding path program 1 times [2019-11-23 23:31:56,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:31:56,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342034324] [2019-11-23 23:31:56,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:31:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:31:56,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:31:56,607 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342034324] [2019-11-23 23:31:56,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:31:56,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 23:31:56,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294614162] [2019-11-23 23:31:56,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 23:31:56,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:31:56,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 23:31:56,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:31:56,634 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 4 states. [2019-11-23 23:31:57,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:31:57,472 INFO L93 Difference]: Finished difference Result 333 states and 641 transitions. [2019-11-23 23:31:57,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 23:31:57,474 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2019-11-23 23:31:57,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:31:57,490 INFO L225 Difference]: With dead ends: 333 [2019-11-23 23:31:57,490 INFO L226 Difference]: Without dead ends: 243 [2019-11-23 23:31:57,494 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:31:57,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2019-11-23 23:31:57,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2019-11-23 23:31:57,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2019-11-23 23:31:57,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 398 transitions. [2019-11-23 23:31:57,553 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 398 transitions. Word has length 80 [2019-11-23 23:31:57,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:31:57,554 INFO L462 AbstractCegarLoop]: Abstraction has 243 states and 398 transitions. [2019-11-23 23:31:57,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 23:31:57,554 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 398 transitions. [2019-11-23 23:31:57,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-23 23:31:57,560 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:31:57,560 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:31:57,561 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:31:57,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:31:57,561 INFO L82 PathProgramCache]: Analyzing trace with hash 782304538, now seen corresponding path program 1 times [2019-11-23 23:31:57,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:31:57,562 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088372540] [2019-11-23 23:31:57,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:31:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:31:57,640 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:31:57,641 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088372540] [2019-11-23 23:31:57,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:31:57,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:31:57,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031662435] [2019-11-23 23:31:57,644 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:31:57,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:31:57,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:31:57,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:31:57,645 INFO L87 Difference]: Start difference. First operand 243 states and 398 transitions. Second operand 3 states. [2019-11-23 23:31:58,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:31:58,095 INFO L93 Difference]: Finished difference Result 725 states and 1191 transitions. [2019-11-23 23:31:58,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:31:58,096 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2019-11-23 23:31:58,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:31:58,101 INFO L225 Difference]: With dead ends: 725 [2019-11-23 23:31:58,102 INFO L226 Difference]: Without dead ends: 483 [2019-11-23 23:31:58,104 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 [2019-11-23 23:31:58,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2019-11-23 23:31:58,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2019-11-23 23:31:58,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2019-11-23 23:31:58,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 739 transitions. [2019-11-23 23:31:58,138 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 739 transitions. Word has length 95 [2019-11-23 23:31:58,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:31:58,138 INFO L462 AbstractCegarLoop]: Abstraction has 483 states and 739 transitions. [2019-11-23 23:31:58,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:31:58,138 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 739 transitions. [2019-11-23 23:31:58,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-23 23:31:58,148 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:31:58,149 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:31:58,149 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:31:58,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:31:58,149 INFO L82 PathProgramCache]: Analyzing trace with hash -6969387, now seen corresponding path program 1 times [2019-11-23 23:31:58,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:31:58,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700554919] [2019-11-23 23:31:58,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:31:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:31:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-23 23:31:58,254 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700554919] [2019-11-23 23:31:58,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:31:58,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 23:31:58,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743179159] [2019-11-23 23:31:58,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 23:31:58,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:31:58,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 23:31:58,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:31:58,260 INFO L87 Difference]: Start difference. First operand 483 states and 739 transitions. Second operand 4 states. [2019-11-23 23:31:59,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:31:59,011 INFO L93 Difference]: Finished difference Result 1845 states and 2795 transitions. [2019-11-23 23:31:59,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 23:31:59,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2019-11-23 23:31:59,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:31:59,047 INFO L225 Difference]: With dead ends: 1845 [2019-11-23 23:31:59,047 INFO L226 Difference]: Without dead ends: 1363 [2019-11-23 23:31:59,049 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 23:31:59,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2019-11-23 23:31:59,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 883. [2019-11-23 23:31:59,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2019-11-23 23:31:59,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1258 transitions. [2019-11-23 23:31:59,094 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1258 transitions. Word has length 113 [2019-11-23 23:31:59,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:31:59,095 INFO L462 AbstractCegarLoop]: Abstraction has 883 states and 1258 transitions. [2019-11-23 23:31:59,095 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 23:31:59,095 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1258 transitions. [2019-11-23 23:31:59,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-23 23:31:59,101 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:31:59,101 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:31:59,101 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:31:59,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:31:59,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1236696134, now seen corresponding path program 1 times [2019-11-23 23:31:59,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:31:59,102 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312918038] [2019-11-23 23:31:59,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:31:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:31:59,208 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-11-23 23:31:59,209 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312918038] [2019-11-23 23:31:59,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:31:59,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 23:31:59,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309076932] [2019-11-23 23:31:59,210 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:31:59,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:31:59,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:31:59,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:31:59,211 INFO L87 Difference]: Start difference. First operand 883 states and 1258 transitions. Second operand 3 states. [2019-11-23 23:31:59,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:31:59,612 INFO L93 Difference]: Finished difference Result 2085 states and 3025 transitions. [2019-11-23 23:31:59,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:31:59,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2019-11-23 23:31:59,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:31:59,620 INFO L225 Difference]: With dead ends: 2085 [2019-11-23 23:31:59,620 INFO L226 Difference]: Without dead ends: 1203 [2019-11-23 23:31:59,622 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 [2019-11-23 23:31:59,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2019-11-23 23:31:59,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1043. [2019-11-23 23:31:59,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2019-11-23 23:31:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1443 transitions. [2019-11-23 23:31:59,658 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1443 transitions. Word has length 132 [2019-11-23 23:31:59,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:31:59,658 INFO L462 AbstractCegarLoop]: Abstraction has 1043 states and 1443 transitions. [2019-11-23 23:31:59,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:31:59,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1443 transitions. [2019-11-23 23:31:59,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-11-23 23:31:59,663 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:31:59,663 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:31:59,663 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:31:59,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:31:59,664 INFO L82 PathProgramCache]: Analyzing trace with hash -134840784, now seen corresponding path program 1 times [2019-11-23 23:31:59,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:31:59,664 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467666950] [2019-11-23 23:31:59,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:31:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:31:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-11-23 23:31:59,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467666950] [2019-11-23 23:31:59,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:31:59,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 23:31:59,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157865913] [2019-11-23 23:31:59,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:31:59,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:31:59,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:31:59,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:31:59,741 INFO L87 Difference]: Start difference. First operand 1043 states and 1443 transitions. Second operand 3 states. [2019-11-23 23:32:00,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:32:00,149 INFO L93 Difference]: Finished difference Result 2165 states and 2995 transitions. [2019-11-23 23:32:00,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:32:00,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 136 [2019-11-23 23:32:00,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:32:00,155 INFO L225 Difference]: With dead ends: 2165 [2019-11-23 23:32:00,155 INFO L226 Difference]: Without dead ends: 1123 [2019-11-23 23:32:00,157 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 [2019-11-23 23:32:00,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2019-11-23 23:32:00,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2019-11-23 23:32:00,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2019-11-23 23:32:00,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1528 transitions. [2019-11-23 23:32:00,183 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1528 transitions. Word has length 136 [2019-11-23 23:32:00,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:32:00,183 INFO L462 AbstractCegarLoop]: Abstraction has 1123 states and 1528 transitions. [2019-11-23 23:32:00,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:32:00,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1528 transitions. [2019-11-23 23:32:00,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-11-23 23:32:00,186 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:32:00,187 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:32:00,187 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:32:00,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:32:00,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1585361750, now seen corresponding path program 1 times [2019-11-23 23:32:00,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:32:00,188 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933468553] [2019-11-23 23:32:00,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:32:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:32:00,324 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-23 23:32:00,324 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933468553] [2019-11-23 23:32:00,324 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604686191] [2019-11-23 23:32:00,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:32:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:32:00,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-23 23:32:00,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:32:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-23 23:32:00,486 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:32:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-23 23:32:00,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-23 23:32:00,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2019-11-23 23:32:00,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147401132] [2019-11-23 23:32:00,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:32:00,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:32:00,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:32:00,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-23 23:32:00,580 INFO L87 Difference]: Start difference. First operand 1123 states and 1528 transitions. Second operand 3 states. [2019-11-23 23:32:00,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:32:00,799 INFO L93 Difference]: Finished difference Result 2163 states and 2923 transitions. [2019-11-23 23:32:00,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:32:00,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2019-11-23 23:32:00,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:32:00,801 INFO L225 Difference]: With dead ends: 2163 [2019-11-23 23:32:00,801 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 23:32:00,804 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 311 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-23 23:32:00,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 23:32:00,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 23:32:00,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 23:32:00,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 23:32:00,812 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 157 [2019-11-23 23:32:00,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:32:00,812 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 23:32:00,813 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:32:00,813 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 23:32:00,818 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 23:32:01,020 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 23:32:01,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 23:32:01,170 INFO L444 ceAbstractionStarter]: For program point L234(lines 234 413) no Hoare annotation was computed. [2019-11-23 23:32:01,171 INFO L444 ceAbstractionStarter]: For program point L169(lines 169 413) no Hoare annotation was computed. [2019-11-23 23:32:01,175 INFO L444 ceAbstractionStarter]: For program point L368(lines 368 413) no Hoare annotation was computed. [2019-11-23 23:32:01,175 INFO L444 ceAbstractionStarter]: For program point L38(lines 38 413) no Hoare annotation was computed. [2019-11-23 23:32:01,175 INFO L444 ceAbstractionStarter]: For program point L237(lines 237 413) no Hoare annotation was computed. [2019-11-23 23:32:01,175 INFO L444 ceAbstractionStarter]: For program point L106(lines 106 413) no Hoare annotation was computed. [2019-11-23 23:32:01,176 INFO L444 ceAbstractionStarter]: For program point L42(lines 42 413) no Hoare annotation was computed. [2019-11-23 23:32:01,176 INFO L444 ceAbstractionStarter]: For program point L175(lines 175 413) no Hoare annotation was computed. [2019-11-23 23:32:01,178 INFO L444 ceAbstractionStarter]: For program point L375(lines 375 413) no Hoare annotation was computed. [2019-11-23 23:32:01,178 INFO L444 ceAbstractionStarter]: For program point L309(lines 309 413) no Hoare annotation was computed. [2019-11-23 23:32:01,178 INFO L444 ceAbstractionStarter]: For program point L179(lines 179 413) no Hoare annotation was computed. [2019-11-23 23:32:01,178 INFO L444 ceAbstractionStarter]: For program point L113(lines 113 413) no Hoare annotation was computed. [2019-11-23 23:32:01,178 INFO L444 ceAbstractionStarter]: For program point L47(lines 47 413) no Hoare annotation was computed. [2019-11-23 23:32:01,178 INFO L444 ceAbstractionStarter]: For program point L378(lines 378 413) no Hoare annotation was computed. [2019-11-23 23:32:01,179 INFO L444 ceAbstractionStarter]: For program point L380(lines 380 413) no Hoare annotation was computed. [2019-11-23 23:32:01,179 INFO L444 ceAbstractionStarter]: For program point L314(lines 314 413) no Hoare annotation was computed. [2019-11-23 23:32:01,179 INFO L444 ceAbstractionStarter]: For program point L248(lines 248 413) no Hoare annotation was computed. [2019-11-23 23:32:01,179 INFO L444 ceAbstractionStarter]: For program point L50(lines 50 413) no Hoare annotation was computed. [2019-11-23 23:32:01,179 INFO L444 ceAbstractionStarter]: For program point L447-1(lines 29 598) no Hoare annotation was computed. [2019-11-23 23:32:01,179 INFO L444 ceAbstractionStarter]: For program point L185(lines 185 413) no Hoare annotation was computed. [2019-11-23 23:32:01,180 INFO L444 ceAbstractionStarter]: For program point L119(lines 119 413) no Hoare annotation was computed. [2019-11-23 23:32:01,180 INFO L444 ceAbstractionStarter]: For program point L450-1(lines 29 598) no Hoare annotation was computed. [2019-11-23 23:32:01,180 INFO L444 ceAbstractionStarter]: For program point L54(lines 54 413) no Hoare annotation was computed. [2019-11-23 23:32:01,180 INFO L444 ceAbstractionStarter]: For program point L451(line 451) no Hoare annotation was computed. [2019-11-23 23:32:01,180 INFO L444 ceAbstractionStarter]: For program point L253(lines 253 413) no Hoare annotation was computed. [2019-11-23 23:32:01,180 INFO L444 ceAbstractionStarter]: For program point L187(lines 187 413) no Hoare annotation was computed. [2019-11-23 23:32:01,180 INFO L444 ceAbstractionStarter]: For program point L189(lines 189 413) no Hoare annotation was computed. [2019-11-23 23:32:01,180 INFO L444 ceAbstractionStarter]: For program point L123(lines 123 413) no Hoare annotation was computed. [2019-11-23 23:32:01,181 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 23:32:01,181 INFO L444 ceAbstractionStarter]: For program point L389(lines 389 413) no Hoare annotation was computed. [2019-11-23 23:32:01,181 INFO L444 ceAbstractionStarter]: For program point L191(lines 191 413) no Hoare annotation was computed. [2019-11-23 23:32:01,181 INFO L444 ceAbstractionStarter]: For program point L59(lines 59 413) no Hoare annotation was computed. [2019-11-23 23:32:01,181 INFO L444 ceAbstractionStarter]: For program point L259(lines 259 413) no Hoare annotation was computed. [2019-11-23 23:32:01,181 INFO L444 ceAbstractionStarter]: For program point L194(lines 194 413) no Hoare annotation was computed. [2019-11-23 23:32:01,181 INFO L444 ceAbstractionStarter]: For program point L261(lines 261 413) no Hoare annotation was computed. [2019-11-23 23:32:01,181 INFO L444 ceAbstractionStarter]: For program point L394(lines 394 413) no Hoare annotation was computed. [2019-11-23 23:32:01,182 INFO L444 ceAbstractionStarter]: For program point L328(lines 328 413) no Hoare annotation was computed. [2019-11-23 23:32:01,182 INFO L444 ceAbstractionStarter]: For program point L130(lines 130 413) no Hoare annotation was computed. [2019-11-23 23:32:01,182 INFO L444 ceAbstractionStarter]: For program point L65(lines 65 413) no Hoare annotation was computed. [2019-11-23 23:32:01,182 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 451) no Hoare annotation was computed. [2019-11-23 23:32:01,182 INFO L444 ceAbstractionStarter]: For program point L198(lines 198 413) no Hoare annotation was computed. [2019-11-23 23:32:01,182 INFO L444 ceAbstractionStarter]: For program point L331(lines 331 413) no Hoare annotation was computed. [2019-11-23 23:32:01,182 INFO L444 ceAbstractionStarter]: For program point L398(lines 398 413) no Hoare annotation was computed. [2019-11-23 23:32:01,182 INFO L444 ceAbstractionStarter]: For program point L134(lines 134 413) no Hoare annotation was computed. [2019-11-23 23:32:01,183 INFO L440 ceAbstractionStarter]: At program point L597(lines 29 598) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8))) (or (and .cse0 (not (= ~a11~0 1))) (and (not (= ~a28~0 8)) .cse0))) [2019-11-23 23:32:01,183 INFO L444 ceAbstractionStarter]: For program point L69(lines 69 413) no Hoare annotation was computed. [2019-11-23 23:32:01,183 INFO L444 ceAbstractionStarter]: For program point L202(lines 202 413) no Hoare annotation was computed. [2019-11-23 23:32:01,183 INFO L447 ceAbstractionStarter]: At program point L600(lines 600 617) the Hoare annotation is: true [2019-11-23 23:32:01,183 INFO L444 ceAbstractionStarter]: For program point L402(lines 402 413) no Hoare annotation was computed. [2019-11-23 23:32:01,184 INFO L444 ceAbstractionStarter]: For program point L337(lines 337 413) no Hoare annotation was computed. [2019-11-23 23:32:01,185 INFO L444 ceAbstractionStarter]: For program point L139(lines 139 413) no Hoare annotation was computed. [2019-11-23 23:32:01,185 INFO L444 ceAbstractionStarter]: For program point L404(lines 404 413) no Hoare annotation was computed. [2019-11-23 23:32:01,185 INFO L444 ceAbstractionStarter]: For program point L74(lines 74 413) no Hoare annotation was computed. [2019-11-23 23:32:01,185 INFO L444 ceAbstractionStarter]: For program point L407(lines 407 413) no Hoare annotation was computed. [2019-11-23 23:32:01,185 INFO L444 ceAbstractionStarter]: For program point L143(lines 143 413) no Hoare annotation was computed. [2019-11-23 23:32:01,188 INFO L440 ceAbstractionStarter]: At program point L606-2(lines 606 616) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8))) (or (and .cse0 (not (= ~a11~0 1))) (and (not (= ~a28~0 8)) .cse0))) [2019-11-23 23:32:01,188 INFO L444 ceAbstractionStarter]: For program point L276(lines 276 413) no Hoare annotation was computed. [2019-11-23 23:32:01,188 INFO L444 ceAbstractionStarter]: For program point L409(lines 409 413) no Hoare annotation was computed. [2019-11-23 23:32:01,188 INFO L444 ceAbstractionStarter]: For program point L212(lines 212 413) no Hoare annotation was computed. [2019-11-23 23:32:01,188 INFO L444 ceAbstractionStarter]: For program point L280(lines 280 413) no Hoare annotation was computed. [2019-11-23 23:32:01,189 INFO L444 ceAbstractionStarter]: For program point L148(lines 148 413) no Hoare annotation was computed. [2019-11-23 23:32:01,189 INFO L444 ceAbstractionStarter]: For program point L82(lines 82 413) no Hoare annotation was computed. [2019-11-23 23:32:01,189 INFO L444 ceAbstractionStarter]: For program point L611(line 611) no Hoare annotation was computed. [2019-11-23 23:32:01,189 INFO L444 ceAbstractionStarter]: For program point L215(lines 215 413) no Hoare annotation was computed. [2019-11-23 23:32:01,189 INFO L444 ceAbstractionStarter]: For program point L349(lines 349 413) no Hoare annotation was computed. [2019-11-23 23:32:01,189 INFO L444 ceAbstractionStarter]: For program point L283(lines 283 413) no Hoare annotation was computed. [2019-11-23 23:32:01,189 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 23:32:01,189 INFO L444 ceAbstractionStarter]: For program point L218(lines 218 413) no Hoare annotation was computed. [2019-11-23 23:32:01,190 INFO L444 ceAbstractionStarter]: For program point L286(lines 286 413) no Hoare annotation was computed. [2019-11-23 23:32:01,190 INFO L444 ceAbstractionStarter]: For program point L154(lines 154 413) no Hoare annotation was computed. [2019-11-23 23:32:01,190 INFO L444 ceAbstractionStarter]: For program point L354(lines 354 413) no Hoare annotation was computed. [2019-11-23 23:32:01,190 INFO L444 ceAbstractionStarter]: For program point L223(lines 223 413) no Hoare annotation was computed. [2019-11-23 23:32:01,190 INFO L444 ceAbstractionStarter]: For program point L91(lines 91 413) no Hoare annotation was computed. [2019-11-23 23:32:01,190 INFO L444 ceAbstractionStarter]: For program point L291(lines 291 413) no Hoare annotation was computed. [2019-11-23 23:32:01,190 INFO L444 ceAbstractionStarter]: For program point L225(lines 225 413) no Hoare annotation was computed. [2019-11-23 23:32:01,190 INFO L444 ceAbstractionStarter]: For program point L159(lines 159 413) no Hoare annotation was computed. [2019-11-23 23:32:01,190 INFO L444 ceAbstractionStarter]: For program point L293(lines 293 413) no Hoare annotation was computed. [2019-11-23 23:32:01,190 INFO L444 ceAbstractionStarter]: For program point L95(lines 95 413) no Hoare annotation was computed. [2019-11-23 23:32:01,191 INFO L444 ceAbstractionStarter]: For program point L30(lines 30 413) no Hoare annotation was computed. [2019-11-23 23:32:01,193 INFO L444 ceAbstractionStarter]: For program point L361(lines 361 413) no Hoare annotation was computed. [2019-11-23 23:32:01,193 INFO L444 ceAbstractionStarter]: For program point L297(lines 297 413) no Hoare annotation was computed. [2019-11-23 23:32:01,193 INFO L444 ceAbstractionStarter]: For program point L165(lines 165 413) no Hoare annotation was computed. [2019-11-23 23:32:01,193 INFO L444 ceAbstractionStarter]: For program point L99(lines 99 413) no Hoare annotation was computed. [2019-11-23 23:32:01,193 INFO L444 ceAbstractionStarter]: For program point L232(lines 232 413) no Hoare annotation was computed. [2019-11-23 23:32:01,193 INFO L444 ceAbstractionStarter]: For program point L35(lines 35 413) no Hoare annotation was computed. [2019-11-23 23:32:01,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 11:32:01 BoogieIcfgContainer [2019-11-23 23:32:01,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 23:32:01,224 INFO L168 Benchmark]: Toolchain (without parser) took 8364.51 ms. Allocated memory was 140.0 MB in the beginning and 318.2 MB in the end (delta: 178.3 MB). Free memory was 102.9 MB in the beginning and 214.0 MB in the end (delta: -111.1 MB). Peak memory consumption was 67.2 MB. Max. memory is 7.1 GB. [2019-11-23 23:32:01,226 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-23 23:32:01,231 INFO L168 Benchmark]: CACSL2BoogieTranslator took 747.75 ms. Allocated memory was 140.0 MB in the beginning and 207.6 MB in the end (delta: 67.6 MB). Free memory was 102.7 MB in the beginning and 174.9 MB in the end (delta: -72.2 MB). Peak memory consumption was 34.9 MB. Max. memory is 7.1 GB. [2019-11-23 23:32:01,232 INFO L168 Benchmark]: Boogie Procedure Inliner took 143.70 ms. Allocated memory is still 207.6 MB. Free memory was 174.9 MB in the beginning and 169.4 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. [2019-11-23 23:32:01,233 INFO L168 Benchmark]: Boogie Preprocessor took 97.01 ms. Allocated memory is still 207.6 MB. Free memory was 169.4 MB in the beginning and 164.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2019-11-23 23:32:01,234 INFO L168 Benchmark]: RCFGBuilder took 2240.25 ms. Allocated memory was 207.6 MB in the beginning and 246.9 MB in the end (delta: 39.3 MB). Free memory was 164.5 MB in the beginning and 182.6 MB in the end (delta: -18.1 MB). Peak memory consumption was 108.8 MB. Max. memory is 7.1 GB. [2019-11-23 23:32:01,238 INFO L168 Benchmark]: TraceAbstraction took 5127.66 ms. Allocated memory was 246.9 MB in the beginning and 318.2 MB in the end (delta: 71.3 MB). Free memory was 182.6 MB in the beginning and 214.0 MB in the end (delta: -31.3 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. [2019-11-23 23:32:01,250 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 140.0 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 747.75 ms. Allocated memory was 140.0 MB in the beginning and 207.6 MB in the end (delta: 67.6 MB). Free memory was 102.7 MB in the beginning and 174.9 MB in the end (delta: -72.2 MB). Peak memory consumption was 34.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 143.70 ms. Allocated memory is still 207.6 MB. Free memory was 174.9 MB in the beginning and 169.4 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.01 ms. Allocated memory is still 207.6 MB. Free memory was 169.4 MB in the beginning and 164.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2240.25 ms. Allocated memory was 207.6 MB in the beginning and 246.9 MB in the end (delta: 39.3 MB). Free memory was 164.5 MB in the beginning and 182.6 MB in the end (delta: -18.1 MB). Peak memory consumption was 108.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5127.66 ms. Allocated memory was 246.9 MB in the beginning and 318.2 MB in the end (delta: 71.3 MB). Free memory was 182.6 MB in the beginning and 214.0 MB in the end (delta: -31.3 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 451]: 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: 600]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 606]: Loop Invariant Derived loop invariant: (a17 <= 8 && !(a11 == 1)) || (!(a28 == 8) && a17 <= 8) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (a17 <= 8 && !(a11 == 1)) || (!(a28 == 8) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Result: SAFE, OverallTime: 5.0s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 400 SDtfs, 649 SDslu, 34 SDs, 0 SdLazy, 1717 SolverSat, 460 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 331 GetRequests, 318 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1123occurred 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, 6 MinimizatonAttempts, 640 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 32 NumberOfFragments, 35 HoareAnnotationTreeSize, 3 FomulaSimplifications, 532 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 22 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 870 NumberOfCodeBlocks, 870 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1019 ConstructedInterpolants, 0 QuantifiedInterpolants, 251728 SizeOfPredicates, 0 NumberOfNonLiveVariables, 306 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 519/527 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...