java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 02:13:00,880 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 02:13:00,882 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 02:13:00,898 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 02:13:00,899 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 02:13:00,900 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 02:13:00,901 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 02:13:00,904 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 02:13:00,906 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 02:13:00,907 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 02:13:00,909 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 02:13:00,910 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 02:13:00,911 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 02:13:00,912 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 02:13:00,914 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 02:13:00,916 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 02:13:00,917 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 02:13:00,920 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 02:13:00,931 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 02:13:00,933 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 02:13:00,934 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 02:13:00,935 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 02:13:00,942 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 02:13:00,955 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 02:13:00,974 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 02:13:00,975 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 02:13:00,976 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 02:13:00,976 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 02:13:00,976 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 02:13:00,976 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 02:13:00,976 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 02:13:00,977 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 02:13:00,977 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 02:13:00,977 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 02:13:00,977 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 02:13:00,977 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 02:13:00,978 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 02:13:00,978 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 02:13:00,979 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 02:13:00,979 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 02:13:00,979 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 02:13:00,979 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 02:13:00,979 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 02:13:00,980 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 02:13:00,980 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 02:13:00,980 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 02:13:00,980 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 02:13:00,980 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 02:13:00,981 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 02:13:00,981 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 02:13:00,981 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 02:13:00,981 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 02:13:00,982 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 02:13:00,982 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 02:13:00,982 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 02:13:00,982 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 02:13:00,982 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 02:13:00,983 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 02:13:01,035 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 02:13:01,050 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 02:13:01,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 02:13:01,056 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 02:13:01,056 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 02:13:01,057 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label21_true-unreach-call.c [2018-10-24 02:13:01,121 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/59c6c1c1c/5178600a99bf4616ba1f2ba18198270b/FLAG51e9fa3d7 [2018-10-24 02:13:02,005 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 02:13:02,007 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label21_true-unreach-call.c [2018-10-24 02:13:02,040 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/59c6c1c1c/5178600a99bf4616ba1f2ba18198270b/FLAG51e9fa3d7 [2018-10-24 02:13:02,057 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/59c6c1c1c/5178600a99bf4616ba1f2ba18198270b [2018-10-24 02:13:02,070 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 02:13:02,072 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 02:13:02,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 02:13:02,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 02:13:02,076 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 02:13:02,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:13:02" (1/1) ... [2018-10-24 02:13:02,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5392a41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:02, skipping insertion in model container [2018-10-24 02:13:02,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:13:02" (1/1) ... [2018-10-24 02:13:02,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 02:13:02,233 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 02:13:03,307 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:13:03,312 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 02:13:03,797 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:13:03,826 INFO L193 MainTranslator]: Completed translation [2018-10-24 02:13:03,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:03 WrapperNode [2018-10-24 02:13:03,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 02:13:03,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 02:13:03,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 02:13:03,828 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 02:13:03,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:03" (1/1) ... [2018-10-24 02:13:03,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:03" (1/1) ... [2018-10-24 02:13:04,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 02:13:04,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 02:13:04,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 02:13:04,297 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 02:13:04,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:03" (1/1) ... [2018-10-24 02:13:04,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:03" (1/1) ... [2018-10-24 02:13:04,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:03" (1/1) ... [2018-10-24 02:13:04,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:03" (1/1) ... [2018-10-24 02:13:04,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:03" (1/1) ... [2018-10-24 02:13:04,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:03" (1/1) ... [2018-10-24 02:13:04,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:03" (1/1) ... [2018-10-24 02:13:04,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 02:13:04,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 02:13:04,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 02:13:04,565 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 02:13:04,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 02:13:04,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 02:13:04,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 02:13:04,642 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 02:13:04,643 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 02:13:04,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 02:13:04,643 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 02:13:04,643 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 02:13:04,644 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 02:13:04,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 02:13:04,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 02:13:04,644 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 02:13:04,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 02:13:12,782 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 02:13:12,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:13:12 BoogieIcfgContainer [2018-10-24 02:13:12,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 02:13:12,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 02:13:12,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 02:13:12,791 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 02:13:12,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:13:02" (1/3) ... [2018-10-24 02:13:12,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e7bda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:13:12, skipping insertion in model container [2018-10-24 02:13:12,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:03" (2/3) ... [2018-10-24 02:13:12,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e7bda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:13:12, skipping insertion in model container [2018-10-24 02:13:12,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:13:12" (3/3) ... [2018-10-24 02:13:12,795 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label21_true-unreach-call.c [2018-10-24 02:13:12,803 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 02:13:12,812 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 02:13:12,827 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 02:13:12,886 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 02:13:12,886 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 02:13:12,887 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 02:13:12,887 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 02:13:12,887 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 02:13:12,887 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 02:13:12,887 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 02:13:12,888 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 02:13:12,934 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 02:13:12,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-24 02:13:12,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:13:12,946 INFO L375 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] [2018-10-24 02:13:12,948 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:13:12,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:13:12,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1608730383, now seen corresponding path program 1 times [2018-10-24 02:13:12,958 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:13:13,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:13:13,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:13:13,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:13:13,017 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:13:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:13:13,499 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:13:13,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:13:13,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:13:13,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 02:13:13,654 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:13:13,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 02:13:13,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 02:13:13,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 02:13:13,682 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-24 02:13:20,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:13:20,171 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-24 02:13:20,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 02:13:20,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2018-10-24 02:13:20,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:13:20,205 INFO L225 Difference]: With dead ends: 2251 [2018-10-24 02:13:20,205 INFO L226 Difference]: Without dead ends: 1474 [2018-10-24 02:13:20,218 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 02:13:20,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-24 02:13:20,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-24 02:13:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 02:13:20,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-10-24 02:13:20,367 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 65 [2018-10-24 02:13:20,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:13:20,368 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-10-24 02:13:20,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 02:13:20,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-10-24 02:13:20,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 02:13:20,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:13:20,378 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 02:13:20,378 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:13:20,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:13:20,378 INFO L82 PathProgramCache]: Analyzing trace with hash -172634104, now seen corresponding path program 1 times [2018-10-24 02:13:20,379 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:13:20,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:13:20,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:13:20,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:13:20,380 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:13:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:13:20,720 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:13:20,886 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:13:20,887 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:13:20,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:13:20,887 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:13:20,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:13:20,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:13:20,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:13:20,890 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-10-24 02:13:31,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:13:31,994 INFO L93 Difference]: Finished difference Result 5789 states and 11192 transitions. [2018-10-24 02:13:32,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:13:32,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-24 02:13:32,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:13:32,037 INFO L225 Difference]: With dead ends: 5789 [2018-10-24 02:13:32,037 INFO L226 Difference]: Without dead ends: 4321 [2018-10-24 02:13:32,049 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 02:13:32,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2018-10-24 02:13:32,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 4295. [2018-10-24 02:13:32,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4295 states. [2018-10-24 02:13:32,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 7032 transitions. [2018-10-24 02:13:32,219 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 7032 transitions. Word has length 139 [2018-10-24 02:13:32,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:13:32,219 INFO L481 AbstractCegarLoop]: Abstraction has 4295 states and 7032 transitions. [2018-10-24 02:13:32,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:13:32,222 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 7032 transitions. [2018-10-24 02:13:32,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-24 02:13:32,234 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:13:32,235 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-10-24 02:13:32,235 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:13:32,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:13:32,239 INFO L82 PathProgramCache]: Analyzing trace with hash -399833123, now seen corresponding path program 1 times [2018-10-24 02:13:32,240 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:13:32,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:13:32,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:13:32,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:13:32,242 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:13:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:13:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:13:32,865 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:13:32,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:13:32,865 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:13:32,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:13:32,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:13:32,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:13:32,867 INFO L87 Difference]: Start difference. First operand 4295 states and 7032 transitions. Second operand 6 states. [2018-10-24 02:13:38,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:13:38,673 INFO L93 Difference]: Finished difference Result 10084 states and 16817 transitions. [2018-10-24 02:13:38,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:13:38,685 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 228 [2018-10-24 02:13:38,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:13:38,726 INFO L225 Difference]: With dead ends: 10084 [2018-10-24 02:13:38,727 INFO L226 Difference]: Without dead ends: 5795 [2018-10-24 02:13:38,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 02:13:38,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2018-10-24 02:13:38,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 5766. [2018-10-24 02:13:38,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5766 states. [2018-10-24 02:13:38,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5766 states to 5766 states and 9291 transitions. [2018-10-24 02:13:38,933 INFO L78 Accepts]: Start accepts. Automaton has 5766 states and 9291 transitions. Word has length 228 [2018-10-24 02:13:38,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:13:38,934 INFO L481 AbstractCegarLoop]: Abstraction has 5766 states and 9291 transitions. [2018-10-24 02:13:38,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:13:38,934 INFO L276 IsEmpty]: Start isEmpty. Operand 5766 states and 9291 transitions. [2018-10-24 02:13:38,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-10-24 02:13:38,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:13:38,942 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 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] [2018-10-24 02:13:38,942 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:13:38,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:13:38,943 INFO L82 PathProgramCache]: Analyzing trace with hash 2045090159, now seen corresponding path program 1 times [2018-10-24 02:13:38,943 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:13:38,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:13:38,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:13:38,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:13:38,944 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:13:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:13:39,236 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:13:39,764 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 116 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 02:13:39,765 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:13:39,765 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:13:39,766 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 272 with the following transitions: [2018-10-24 02:13:39,771 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2043], [2045], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2280], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 02:13:39,852 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:13:39,852 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:13:42,634 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 02:13:44,450 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 02:13:44,454 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 02:13:44,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:13:44,498 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 02:13:47,205 INFO L232 lantSequenceWeakener]: Weakened 263 states. On average, predicates are now at 78.16% of their original sizes. [2018-10-24 02:13:47,206 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 02:13:47,474 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 02:13:47,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 02:13:47,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 02:13:47,475 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:13:47,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 02:13:47,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 02:13:47,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 02:13:47,477 INFO L87 Difference]: Start difference. First operand 5766 states and 9291 transitions. Second operand 7 states. [2018-10-24 02:15:22,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:15:22,480 INFO L93 Difference]: Finished difference Result 12231 states and 19736 transitions. [2018-10-24 02:15:22,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:15:22,481 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2018-10-24 02:15:22,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:15:22,513 INFO L225 Difference]: With dead ends: 12231 [2018-10-24 02:15:22,513 INFO L226 Difference]: Without dead ends: 6471 [2018-10-24 02:15:22,529 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 271 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 02:15:22,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6471 states. [2018-10-24 02:15:22,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6471 to 6469. [2018-10-24 02:15:22,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6469 states. [2018-10-24 02:15:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6469 states to 6469 states and 10003 transitions. [2018-10-24 02:15:22,680 INFO L78 Accepts]: Start accepts. Automaton has 6469 states and 10003 transitions. Word has length 271 [2018-10-24 02:15:22,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:15:22,680 INFO L481 AbstractCegarLoop]: Abstraction has 6469 states and 10003 transitions. [2018-10-24 02:15:22,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 02:15:22,680 INFO L276 IsEmpty]: Start isEmpty. Operand 6469 states and 10003 transitions. [2018-10-24 02:15:22,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2018-10-24 02:15:22,694 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:15:22,695 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-10-24 02:15:22,695 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:15:22,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:15:22,696 INFO L82 PathProgramCache]: Analyzing trace with hash 181571693, now seen corresponding path program 1 times [2018-10-24 02:15:22,696 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:15:22,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:15:22,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:15:22,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:15:22,697 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:15:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:15:23,503 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 233 proven. 237 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 02:15:23,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:15:23,503 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:15:23,504 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 459 with the following transitions: [2018-10-24 02:15:23,504 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2043], [2045], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2280], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 02:15:23,513 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:15:23,514 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:15:25,070 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 02:15:37,638 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 02:15:37,638 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 02:15:37,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:15:37,646 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 02:15:43,746 INFO L232 lantSequenceWeakener]: Weakened 434 states. On average, predicates are now at 77.69% of their original sizes. [2018-10-24 02:15:43,747 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 02:15:55,271 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 02:15:55,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 02:15:55,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [11] total 27 [2018-10-24 02:15:55,272 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:15:55,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 02:15:55,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 02:15:55,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2018-10-24 02:15:55,275 INFO L87 Difference]: Start difference. First operand 6469 states and 10003 transitions. Second operand 18 states. Received shutdown request... [2018-10-24 02:16:49,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 02:16:49,065 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 02:16:49,070 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 02:16:49,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:16:49 BoogieIcfgContainer [2018-10-24 02:16:49,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 02:16:49,072 INFO L168 Benchmark]: Toolchain (without parser) took 227001.27 ms. Allocated memory was 1.6 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -148.1 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 02:16:49,073 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 02:16:49,074 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1755.11 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 02:16:49,074 INFO L168 Benchmark]: Boogie Procedure Inliner took 467.99 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 776.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -955.8 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-24 02:16:49,075 INFO L168 Benchmark]: Boogie Preprocessor took 267.94 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-10-24 02:16:49,076 INFO L168 Benchmark]: RCFGBuilder took 8218.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 500.6 MB). Peak memory consumption was 500.6 MB. Max. memory is 7.1 GB. [2018-10-24 02:16:49,077 INFO L168 Benchmark]: TraceAbstraction took 216286.82 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 1.6 GB in the end (delta: 145.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 02:16:49,082 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1755.11 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 467.99 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 776.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -955.8 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 267.94 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8218.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 500.6 MB). Peak memory consumption was 500.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216286.82 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 1.6 GB in the end (delta: 145.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 183]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 183). Cancelled while BasicCegarLoop was constructing difference of abstraction (6469states) and FLOYD_HOARE automaton (currently 14 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (1479 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 216.1s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 172.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1141 SDtfs, 8955 SDslu, 711 SDs, 0 SdLazy, 17172 SolverSat, 4746 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 89.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 760 GetRequests, 571 SyntacticMatches, 145 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 13.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6469occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 18.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9966384586248828 AbsIntWeakeningRatio, 0.07977991746905089 AbsIntAvgWeakeningVarsNumRemoved, 348.6272352132049 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 4 MinimizatonAttempts, 57 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1161 NumberOfCodeBlocks, 1161 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1156 ConstructedInterpolants, 0 QuantifiedInterpolants, 2114343 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 475/802 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown