java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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/Problem16_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:42:04,050 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:42:04,058 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:42:04,074 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:42:04,074 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:42:04,075 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:42:04,076 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:42:04,078 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:42:04,080 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:42:04,081 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:42:04,082 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:42:04,082 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:42:04,083 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:42:04,084 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:42:04,085 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:42:04,086 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:42:04,087 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:42:04,089 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:42:04,090 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:42:04,092 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:42:04,093 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:42:04,094 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:42:04,096 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 03:42:04,108 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:42:04,109 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:42:04,109 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:42:04,112 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:42:04,113 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:42:04,142 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:42:04,142 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:42:04,143 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:42:04,143 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:42:04,144 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:42:04,144 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:42:04,144 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:42:04,144 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:42:04,144 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:42:04,145 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:42:04,145 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:42:04,145 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:42:04,146 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:42:04,146 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:42:04,147 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:42:04,147 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:42:04,147 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:42:04,147 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:42:04,147 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:42:04,147 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:42:04,149 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:42:04,149 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:42:04,149 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:42:04,150 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:42:04,150 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:42:04,150 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:42:04,150 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:42:04,150 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:42:04,150 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:42:04,151 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:42:04,151 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:42:04,151 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:42:04,151 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:42:04,151 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:42:04,204 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:42:04,218 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:42:04,221 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:42:04,223 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:42:04,223 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:42:04,224 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label11_true-unreach-call.c [2018-11-07 03:42:04,286 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43a7edf8a/bb331f5dee4b44d2849921cd69da2e14/FLAG2de8000b3 [2018-11-07 03:42:04,994 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:42:04,995 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label11_true-unreach-call.c [2018-11-07 03:42:05,017 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43a7edf8a/bb331f5dee4b44d2849921cd69da2e14/FLAG2de8000b3 [2018-11-07 03:42:05,035 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43a7edf8a/bb331f5dee4b44d2849921cd69da2e14 [2018-11-07 03:42:05,047 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:42:05,049 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:42:05,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:42:05,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:42:05,057 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:42:05,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:42:05" (1/1) ... [2018-11-07 03:42:05,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2ccaad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:05, skipping insertion in model container [2018-11-07 03:42:05,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:42:05" (1/1) ... [2018-11-07 03:42:05,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:42:05,173 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:42:05,916 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:42:05,921 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:42:06,223 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:42:06,247 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:42:06,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:06 WrapperNode [2018-11-07 03:42:06,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:42:06,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:42:06,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:42:06,250 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:42:06,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:06" (1/1) ... [2018-11-07 03:42:06,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:06" (1/1) ... [2018-11-07 03:42:06,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:42:06,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:42:06,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:42:06,433 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:42:06,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:06" (1/1) ... [2018-11-07 03:42:06,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:06" (1/1) ... [2018-11-07 03:42:06,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:06" (1/1) ... [2018-11-07 03:42:06,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:06" (1/1) ... [2018-11-07 03:42:06,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:06" (1/1) ... [2018-11-07 03:42:06,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:06" (1/1) ... [2018-11-07 03:42:06,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:06" (1/1) ... [2018-11-07 03:42:06,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:42:06,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:42:06,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:42:06,584 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:42:06,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:06" (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 [2018-11-07 03:42:06,656 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:42:06,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:42:06,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:42:06,656 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:42:06,656 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:42:06,656 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:42:06,657 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:42:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:42:06,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:42:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:42:06,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:42:12,544 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:42:12,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:42:12 BoogieIcfgContainer [2018-11-07 03:42:12,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:42:12,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:42:12,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:42:12,550 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:42:12,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:42:05" (1/3) ... [2018-11-07 03:42:12,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7768eb46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:42:12, skipping insertion in model container [2018-11-07 03:42:12,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:42:06" (2/3) ... [2018-11-07 03:42:12,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7768eb46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:42:12, skipping insertion in model container [2018-11-07 03:42:12,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:42:12" (3/3) ... [2018-11-07 03:42:12,554 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label11_true-unreach-call.c [2018-11-07 03:42:12,565 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:42:12,574 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:42:12,591 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:42:12,633 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:42:12,633 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:42:12,633 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:42:12,633 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:42:12,634 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:42:12,634 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:42:12,634 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:42:12,634 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:42:12,667 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 03:42:12,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-07 03:42:12,677 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:42:12,679 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] [2018-11-07 03:42:12,681 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:42:12,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:42:12,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1469466684, now seen corresponding path program 1 times [2018-11-07 03:42:12,691 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:42:12,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:42:12,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:42:12,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:42:12,741 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:42:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:42:13,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:42:13,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:42:13,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 03:42:13,189 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:42:13,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 03:42:13,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 03:42:13,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:42:13,221 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 03:42:16,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:42:16,821 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 03:42:16,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 03:42:16,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2018-11-07 03:42:16,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:42:16,853 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 03:42:16,853 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 03:42:16,865 INFO L604 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 [2018-11-07 03:42:16,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 03:42:16,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 03:42:16,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 03:42:16,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-11-07 03:42:16,975 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 62 [2018-11-07 03:42:16,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:42:16,976 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-11-07 03:42:16,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 03:42:16,976 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-11-07 03:42:16,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 03:42:16,985 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:42:16,985 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:42:16,985 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:42:16,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:42:16,986 INFO L82 PathProgramCache]: Analyzing trace with hash -2105085518, now seen corresponding path program 1 times [2018-11-07 03:42:16,986 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:42:16,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:42:16,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:42:16,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:42:16,988 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:42:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:42:17,280 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:42:17,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:42:17,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:42:17,281 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:42:17,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:42:17,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:42:17,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:42:17,284 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-11-07 03:42:22,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:42:22,625 INFO L93 Difference]: Finished difference Result 2194 states and 4083 transitions. [2018-11-07 03:42:22,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:42:22,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-11-07 03:42:22,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:42:22,643 INFO L225 Difference]: With dead ends: 2194 [2018-11-07 03:42:22,643 INFO L226 Difference]: Without dead ends: 1456 [2018-11-07 03:42:22,648 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:42:22,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2018-11-07 03:42:22,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1436. [2018-11-07 03:42:22,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-11-07 03:42:22,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2550 transitions. [2018-11-07 03:42:22,750 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2550 transitions. Word has length 132 [2018-11-07 03:42:22,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:42:22,750 INFO L480 AbstractCegarLoop]: Abstraction has 1436 states and 2550 transitions. [2018-11-07 03:42:22,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:42:22,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2550 transitions. [2018-11-07 03:42:22,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-07 03:42:22,764 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:42:22,765 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:42:22,765 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:42:22,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:42:22,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1857215629, now seen corresponding path program 1 times [2018-11-07 03:42:22,769 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:42:22,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:42:22,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:42:22,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:42:22,770 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:42:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:42:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:42:23,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:42:23,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:42:23,127 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:42:23,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:42:23,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:42:23,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:42:23,129 INFO L87 Difference]: Start difference. First operand 1436 states and 2550 transitions. Second operand 6 states. [2018-11-07 03:42:27,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:42:27,880 INFO L93 Difference]: Finished difference Result 3936 states and 7024 transitions. [2018-11-07 03:42:27,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:42:27,880 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-11-07 03:42:27,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:42:27,896 INFO L225 Difference]: With dead ends: 3936 [2018-11-07 03:42:27,896 INFO L226 Difference]: Without dead ends: 2506 [2018-11-07 03:42:27,905 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:42:27,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2018-11-07 03:42:27,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2479. [2018-11-07 03:42:27,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2018-11-07 03:42:27,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3996 transitions. [2018-11-07 03:42:27,983 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3996 transitions. Word has length 161 [2018-11-07 03:42:27,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:42:27,984 INFO L480 AbstractCegarLoop]: Abstraction has 2479 states and 3996 transitions. [2018-11-07 03:42:27,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:42:27,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3996 transitions. [2018-11-07 03:42:27,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-11-07 03:42:27,988 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:42:27,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:42:27,989 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:42:27,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:42:27,989 INFO L82 PathProgramCache]: Analyzing trace with hash 2100358191, now seen corresponding path program 1 times [2018-11-07 03:42:27,989 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:42:27,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:42:27,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:42:27,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:42:27,991 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:42:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:42:28,291 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:42:28,292 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:42:28,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:42:28,292 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:42:28,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:42:28,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:42:28,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:42:28,294 INFO L87 Difference]: Start difference. First operand 2479 states and 3996 transitions. Second operand 6 states. [2018-11-07 03:42:31,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:42:31,587 INFO L93 Difference]: Finished difference Result 6050 states and 9896 transitions. [2018-11-07 03:42:31,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:42:31,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 179 [2018-11-07 03:42:31,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:42:31,613 INFO L225 Difference]: With dead ends: 6050 [2018-11-07 03:42:31,614 INFO L226 Difference]: Without dead ends: 3577 [2018-11-07 03:42:31,627 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:42:31,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2018-11-07 03:42:31,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3545. [2018-11-07 03:42:31,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2018-11-07 03:42:31,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4965 transitions. [2018-11-07 03:42:31,735 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4965 transitions. Word has length 179 [2018-11-07 03:42:31,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:42:31,736 INFO L480 AbstractCegarLoop]: Abstraction has 3545 states and 4965 transitions. [2018-11-07 03:42:31,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:42:31,736 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4965 transitions. [2018-11-07 03:42:31,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-11-07 03:42:31,745 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:42:31,746 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, 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] [2018-11-07 03:42:31,746 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:42:31,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:42:31,746 INFO L82 PathProgramCache]: Analyzing trace with hash -2086748824, now seen corresponding path program 1 times [2018-11-07 03:42:31,747 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:42:31,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:42:31,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:42:31,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:42:31,748 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:42:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:42:32,159 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 122 proven. 53 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 03:42:32,160 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:42:32,160 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:42:32,161 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-11-07 03:42:32,167 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [575], [577], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 03:42:32,274 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:42:32,275 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:42:35,596 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:42:35,598 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 03:42:35,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:42:35,616 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:42:37,694 INFO L227 lantSequenceWeakener]: Weakened 254 states. On average, predicates are now at 78.14% of their original sizes. [2018-11-07 03:42:37,694 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:42:38,339 INFO L415 sIntCurrentIteration]: We unified 261 AI predicates to 261 [2018-11-07 03:42:38,339 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:42:38,341 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:42:38,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-11-07 03:42:38,341 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:42:38,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 03:42:38,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 03:42:38,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:42:38,343 INFO L87 Difference]: Start difference. First operand 3545 states and 4965 transitions. Second operand 8 states. [2018-11-07 03:42:41,814 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:43:07,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:43:07,898 INFO L93 Difference]: Finished difference Result 7424 states and 10344 transitions. [2018-11-07 03:43:07,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:43:07,898 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 262 [2018-11-07 03:43:07,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:43:07,913 INFO L225 Difference]: With dead ends: 7424 [2018-11-07 03:43:07,914 INFO L226 Difference]: Without dead ends: 3885 [2018-11-07 03:43:07,926 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 263 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 03:43:07,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2018-11-07 03:43:08,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3883. [2018-11-07 03:43:08,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2018-11-07 03:43:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 5311 transitions. [2018-11-07 03:43:08,011 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 5311 transitions. Word has length 262 [2018-11-07 03:43:08,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:43:08,011 INFO L480 AbstractCegarLoop]: Abstraction has 3883 states and 5311 transitions. [2018-11-07 03:43:08,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 03:43:08,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 5311 transitions. [2018-11-07 03:43:08,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-11-07 03:43:08,019 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:43:08,020 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:43:08,020 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:43:08,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:43:08,021 INFO L82 PathProgramCache]: Analyzing trace with hash -68374518, now seen corresponding path program 1 times [2018-11-07 03:43:08,021 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:43:08,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:43:08,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:43:08,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:43:08,022 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:43:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:43:08,458 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 237 proven. 115 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-07 03:43:08,459 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:43:08,459 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:43:08,459 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 355 with the following transitions: [2018-11-07 03:43:08,459 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [575], [577], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 03:43:08,468 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:43:08,469 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:43:10,694 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:43:26,380 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:43:26,380 INFO L272 AbstractInterpreter]: Visited 139 different actions 537 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 03:43:26,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:43:26,387 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:43:30,741 INFO L227 lantSequenceWeakener]: Weakened 139 states. On average, predicates are now at 78.38% of their original sizes. [2018-11-07 03:43:30,741 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:45:28,130 INFO L415 sIntCurrentIteration]: We unified 353 AI predicates to 353 [2018-11-07 03:45:28,131 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:45:28,131 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:45:28,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2018-11-07 03:45:28,132 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:45:28,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 03:45:28,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 03:45:28,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-11-07 03:45:28,134 INFO L87 Difference]: Start difference. First operand 3883 states and 5311 transitions. Second operand 16 states. Received shutdown request... [2018-11-07 03:46:06,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 03:46:06,455 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:46:06,460 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:46:06,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:46:06 BoogieIcfgContainer [2018-11-07 03:46:06,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:46:06,461 INFO L168 Benchmark]: Toolchain (without parser) took 241413.67 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 500.8 MB. Max. memory is 7.1 GB. [2018-11-07 03:46:06,464 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:46:06,464 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1198.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 03:46:06,465 INFO L168 Benchmark]: Boogie Procedure Inliner took 182.59 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 675.8 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -798.8 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-11-07 03:46:06,467 INFO L168 Benchmark]: Boogie Preprocessor took 150.72 ms. Allocated memory is still 2.1 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:46:06,467 INFO L168 Benchmark]: RCFGBuilder took 5961.97 ms. Allocated memory is still 2.1 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 253.0 MB). Peak memory consumption was 253.0 MB. Max. memory is 7.1 GB. [2018-11-07 03:46:06,468 INFO L168 Benchmark]: TraceAbstraction took 233914.61 ms. Allocated memory was 2.1 GB in the beginning and 3.3 GB in the end (delta: 1.2 GB). Free memory was 1.8 GB in the beginning and 2.7 GB in the end (delta: -879.7 MB). Peak memory consumption was 286.3 MB. Max. memory is 7.1 GB. [2018-11-07 03:46:06,473 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1198.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 182.59 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 675.8 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -798.8 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 150.72 ms. Allocated memory is still 2.1 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5961.97 ms. Allocated memory is still 2.1 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 253.0 MB). Peak memory consumption was 253.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233914.61 ms. Allocated memory was 2.1 GB in the beginning and 3.3 GB in the end (delta: 1.2 GB). Free memory was 1.8 GB in the beginning and 2.7 GB in the end (delta: -879.7 MB). Peak memory consumption was 286.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 172). Cancelled while BasicCegarLoop was constructing difference of abstraction (3883states) and FLOYD_HOARE automaton (currently 15 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (155 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 233.8s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 85.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 815 SDtfs, 6348 SDslu, 493 SDs, 0 SdLazy, 8115 SolverSat, 2385 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 34.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 656 GetRequests, 386 SyntacticMatches, 221 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 120.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3883occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 21.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9960198036161071 AbsIntWeakeningRatio, 0.09446254071661238 AbsIntAvgWeakeningVarsNumRemoved, 398.7035830618893 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 81 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 1150 NumberOfCodeBlocks, 1150 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1144 ConstructedInterpolants, 0 QuantifiedInterpolants, 992362 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 574/742 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown