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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:12:14,967 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:12:14,969 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:12:14,986 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:12:14,988 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:12:14,989 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:12:14,993 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:12:14,995 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:12:14,998 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:12:14,999 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:12:15,001 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:12:15,001 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:12:15,002 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:12:15,004 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:12:15,010 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:12:15,011 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:12:15,015 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:12:15,017 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:12:15,021 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:12:15,022 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:12:15,023 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:12:15,026 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:12:15,029 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:12:15,030 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:12:15,032 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:12:15,033 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:12:15,033 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:12:15,034 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:12:15,038 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:12:15,040 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:12:15,041 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:12:15,041 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:12:15,041 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:12:15,042 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:12:15,044 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:12:15,044 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:12:15,045 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 08:12:15,070 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:12:15,071 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:12:15,071 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:12:15,072 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:12:15,075 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:12:15,075 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:12:15,075 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:12:15,075 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:12:15,076 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:12:15,076 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:12:15,076 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:12:15,076 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:12:15,076 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:12:15,076 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:12:15,078 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:12:15,078 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:12:15,078 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:12:15,078 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:12:15,079 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:12:15,081 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:12:15,081 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:12:15,081 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:12:15,081 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:12:15,081 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:12:15,081 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:12:15,082 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:12:15,082 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:12:15,082 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:12:15,083 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:12:15,083 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:12:15,083 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:12:15,083 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:12:15,083 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:12:15,083 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:12:15,084 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:12:15,084 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:12:15,151 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:12:15,164 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:12:15,168 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:12:15,170 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:12:15,170 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:12:15,171 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label26_true-unreach-call.c [2018-10-27 08:12:15,235 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/602630c4b/4d9078cce2af43ab87f4e00944dbbbb3/FLAGc1d822492 [2018-10-27 08:12:15,894 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:12:15,897 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label26_true-unreach-call.c [2018-10-27 08:12:15,919 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/602630c4b/4d9078cce2af43ab87f4e00944dbbbb3/FLAGc1d822492 [2018-10-27 08:12:15,935 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/602630c4b/4d9078cce2af43ab87f4e00944dbbbb3 [2018-10-27 08:12:15,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:12:15,950 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:12:15,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:12:15,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:12:15,954 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:12:15,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:12:15" (1/1) ... [2018-10-27 08:12:15,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f32220e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:15, skipping insertion in model container [2018-10-27 08:12:15,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:12:15" (1/1) ... [2018-10-27 08:12:15,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:12:16,059 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:12:16,901 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:12:16,910 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:12:17,199 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:12:17,221 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:12:17,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:17 WrapperNode [2018-10-27 08:12:17,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:12:17,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:12:17,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:12:17,223 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:12:17,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:17" (1/1) ... [2018-10-27 08:12:17,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:17" (1/1) ... [2018-10-27 08:12:17,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:12:17,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:12:17,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:12:17,635 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:12:17,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:17" (1/1) ... [2018-10-27 08:12:17,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:17" (1/1) ... [2018-10-27 08:12:17,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:17" (1/1) ... [2018-10-27 08:12:17,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:17" (1/1) ... [2018-10-27 08:12:17,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:17" (1/1) ... [2018-10-27 08:12:17,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:17" (1/1) ... [2018-10-27 08:12:17,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:17" (1/1) ... [2018-10-27 08:12:17,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:12:17,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:12:17,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:12:17,874 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:12:17,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:17" (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 [2018-10-27 08:12:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:12:17,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:12:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:12:17,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:12:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:12:17,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:12:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:12:17,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:12:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:12:17,949 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:12:25,973 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:12:25,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:12:25 BoogieIcfgContainer [2018-10-27 08:12:25,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:12:25,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:12:25,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:12:25,978 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:12:25,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:12:15" (1/3) ... [2018-10-27 08:12:25,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72afb927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:12:25, skipping insertion in model container [2018-10-27 08:12:25,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:12:17" (2/3) ... [2018-10-27 08:12:25,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72afb927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:12:25, skipping insertion in model container [2018-10-27 08:12:25,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:12:25" (3/3) ... [2018-10-27 08:12:25,982 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label26_true-unreach-call.c [2018-10-27 08:12:25,990 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:12:25,999 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:12:26,016 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:12:26,057 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:12:26,057 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:12:26,058 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:12:26,058 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:12:26,058 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:12:26,058 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:12:26,058 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:12:26,059 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:12:26,090 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 08:12:26,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-27 08:12:26,100 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:12:26,101 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] [2018-10-27 08:12:26,104 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:12:26,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:12:26,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1626414812, now seen corresponding path program 1 times [2018-10-27 08:12:26,112 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:12:26,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:12:26,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:12:26,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:12:26,161 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:12:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:12:26,653 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-27 08:12:26,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:12:26,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:12:26,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:12:26,672 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:12:26,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:12:26,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:12:26,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:12:26,700 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-27 08:12:37,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:12:37,130 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-10-27 08:12:37,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:12:37,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-10-27 08:12:37,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:12:37,161 INFO L225 Difference]: With dead ends: 1558 [2018-10-27 08:12:37,161 INFO L226 Difference]: Without dead ends: 1114 [2018-10-27 08:12:37,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:12:37,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-10-27 08:12:37,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1091. [2018-10-27 08:12:37,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2018-10-27 08:12:37,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1853 transitions. [2018-10-27 08:12:37,299 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1853 transitions. Word has length 60 [2018-10-27 08:12:37,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:12:37,299 INFO L481 AbstractCegarLoop]: Abstraction has 1091 states and 1853 transitions. [2018-10-27 08:12:37,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:12:37,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1853 transitions. [2018-10-27 08:12:37,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-27 08:12:37,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:12:37,310 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:12:37,310 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:12:37,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:12:37,311 INFO L82 PathProgramCache]: Analyzing trace with hash -30432942, now seen corresponding path program 1 times [2018-10-27 08:12:37,311 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:12:37,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:12:37,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:12:37,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:12:37,312 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:12:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:12:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:12:37,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:12:37,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:12:37,643 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:12:37,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:12:37,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:12:37,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:12:37,646 INFO L87 Difference]: Start difference. First operand 1091 states and 1853 transitions. Second operand 5 states. [2018-10-27 08:12:48,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:12:48,096 INFO L93 Difference]: Finished difference Result 3240 states and 5580 transitions. [2018-10-27 08:12:48,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 08:12:48,098 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2018-10-27 08:12:48,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:12:48,119 INFO L225 Difference]: With dead ends: 3240 [2018-10-27 08:12:48,119 INFO L226 Difference]: Without dead ends: 2155 [2018-10-27 08:12:48,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:12:48,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2018-10-27 08:12:48,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2114. [2018-10-27 08:12:48,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2018-10-27 08:12:48,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3176 transitions. [2018-10-27 08:12:48,225 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3176 transitions. Word has length 133 [2018-10-27 08:12:48,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:12:48,226 INFO L481 AbstractCegarLoop]: Abstraction has 2114 states and 3176 transitions. [2018-10-27 08:12:48,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:12:48,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3176 transitions. [2018-10-27 08:12:48,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-27 08:12:48,235 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:12:48,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:12:48,236 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:12:48,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:12:48,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1329379774, now seen corresponding path program 1 times [2018-10-27 08:12:48,237 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:12:48,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:12:48,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:12:48,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:12:48,238 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:12:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:12:48,437 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:12:48,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:12:48,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:12:48,438 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:12:48,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:12:48,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:12:48,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:12:48,439 INFO L87 Difference]: Start difference. First operand 2114 states and 3176 transitions. Second operand 4 states. [2018-10-27 08:12:55,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:12:55,312 INFO L93 Difference]: Finished difference Result 7960 states and 12498 transitions. [2018-10-27 08:12:55,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:12:55,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2018-10-27 08:12:55,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:12:55,356 INFO L225 Difference]: With dead ends: 7960 [2018-10-27 08:12:55,356 INFO L226 Difference]: Without dead ends: 5852 [2018-10-27 08:12:55,384 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:12:55,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5852 states. [2018-10-27 08:12:55,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5852 to 5847. [2018-10-27 08:12:55,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5847 states. [2018-10-27 08:12:55,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5847 states to 5847 states and 8250 transitions. [2018-10-27 08:12:55,555 INFO L78 Accepts]: Start accepts. Automaton has 5847 states and 8250 transitions. Word has length 141 [2018-10-27 08:12:55,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:12:55,556 INFO L481 AbstractCegarLoop]: Abstraction has 5847 states and 8250 transitions. [2018-10-27 08:12:55,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:12:55,556 INFO L276 IsEmpty]: Start isEmpty. Operand 5847 states and 8250 transitions. [2018-10-27 08:12:55,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-27 08:12:55,560 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:12:55,561 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:12:55,561 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:12:55,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:12:55,561 INFO L82 PathProgramCache]: Analyzing trace with hash -386539338, now seen corresponding path program 1 times [2018-10-27 08:12:55,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:12:55,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:12:55,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:12:55,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:12:55,563 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:12:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:12:55,851 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:12:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:12:56,180 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:12:56,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:12:56,180 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:12:56,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:12:56,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:12:56,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:12:56,182 INFO L87 Difference]: Start difference. First operand 5847 states and 8250 transitions. Second operand 6 states. [2018-10-27 08:13:04,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:13:04,034 INFO L93 Difference]: Finished difference Result 13535 states and 18800 transitions. [2018-10-27 08:13:04,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:13:04,035 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2018-10-27 08:13:04,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:13:04,076 INFO L225 Difference]: With dead ends: 13535 [2018-10-27 08:13:04,076 INFO L226 Difference]: Without dead ends: 7694 [2018-10-27 08:13:04,119 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:13:04,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7694 states. [2018-10-27 08:13:04,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7694 to 7637. [2018-10-27 08:13:04,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2018-10-27 08:13:04,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 9974 transitions. [2018-10-27 08:13:04,318 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 9974 transitions. Word has length 160 [2018-10-27 08:13:04,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:13:04,318 INFO L481 AbstractCegarLoop]: Abstraction has 7637 states and 9974 transitions. [2018-10-27 08:13:04,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:13:04,319 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 9974 transitions. [2018-10-27 08:13:04,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-27 08:13:04,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:13:04,327 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, 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] [2018-10-27 08:13:04,327 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:13:04,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:04,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1240653666, now seen corresponding path program 1 times [2018-10-27 08:13:04,328 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:13:04,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:04,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:04,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:04,330 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:13:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:04,814 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-27 08:13:04,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:13:04,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:13:04,815 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:13:04,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:13:04,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:13:04,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:13:04,816 INFO L87 Difference]: Start difference. First operand 7637 states and 9974 transitions. Second operand 4 states. [2018-10-27 08:13:10,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:13:10,242 INFO L93 Difference]: Finished difference Result 24574 states and 32996 transitions. [2018-10-27 08:13:10,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:13:10,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2018-10-27 08:13:10,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:13:10,321 INFO L225 Difference]: With dead ends: 24574 [2018-10-27 08:13:10,321 INFO L226 Difference]: Without dead ends: 16943 [2018-10-27 08:13:10,367 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:13:10,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16943 states. [2018-10-27 08:13:10,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16943 to 16323. [2018-10-27 08:13:10,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16323 states. [2018-10-27 08:13:10,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16323 states to 16323 states and 20411 transitions. [2018-10-27 08:13:10,782 INFO L78 Accepts]: Start accepts. Automaton has 16323 states and 20411 transitions. Word has length 215 [2018-10-27 08:13:10,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:13:10,783 INFO L481 AbstractCegarLoop]: Abstraction has 16323 states and 20411 transitions. [2018-10-27 08:13:10,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:13:10,783 INFO L276 IsEmpty]: Start isEmpty. Operand 16323 states and 20411 transitions. [2018-10-27 08:13:10,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-27 08:13:10,798 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:13:10,799 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, 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] [2018-10-27 08:13:10,799 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:13:10,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:10,800 INFO L82 PathProgramCache]: Analyzing trace with hash -624386788, now seen corresponding path program 1 times [2018-10-27 08:13:10,800 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:13:10,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:10,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:10,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:10,801 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:13:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:11,532 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-27 08:13:11,532 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:13:11,532 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:13:11,534 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-10-27 08:13:11,536 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:13:11,630 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:13:11,630 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:13:12,365 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:13:12,368 INFO L272 AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:13:12,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:12,411 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:13:13,265 INFO L227 lantSequenceWeakener]: Weakened 232 states. On average, predicates are now at 78.13% of their original sizes. [2018-10-27 08:13:13,265 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:13:13,507 INFO L415 sIntCurrentIteration]: We unified 240 AI predicates to 240 [2018-10-27 08:13:13,507 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:13:13,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:13:13,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-27 08:13:13,508 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:13:13,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:13:13,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:13:13,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:13:13,510 INFO L87 Difference]: Start difference. First operand 16323 states and 20411 transitions. Second operand 6 states. [2018-10-27 08:14:26,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:14:26,697 INFO L93 Difference]: Finished difference Result 32950 states and 41178 transitions. [2018-10-27 08:14:26,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:14:26,697 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 241 [2018-10-27 08:14:26,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:14:26,755 INFO L225 Difference]: With dead ends: 32950 [2018-10-27 08:14:26,756 INFO L226 Difference]: Without dead ends: 16633 [2018-10-27 08:14:26,800 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 241 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:14:26,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16633 states. [2018-10-27 08:14:27,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16633 to 16631. [2018-10-27 08:14:27,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16631 states. [2018-10-27 08:14:27,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16631 states to 16631 states and 20728 transitions. [2018-10-27 08:14:27,120 INFO L78 Accepts]: Start accepts. Automaton has 16631 states and 20728 transitions. Word has length 241 [2018-10-27 08:14:27,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:14:27,121 INFO L481 AbstractCegarLoop]: Abstraction has 16631 states and 20728 transitions. [2018-10-27 08:14:27,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:14:27,121 INFO L276 IsEmpty]: Start isEmpty. Operand 16631 states and 20728 transitions. [2018-10-27 08:14:27,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-10-27 08:14:27,137 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:14:27,137 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, 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] [2018-10-27 08:14:27,138 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:14:27,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:14:27,138 INFO L82 PathProgramCache]: Analyzing trace with hash 675271699, now seen corresponding path program 1 times [2018-10-27 08:14:27,138 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:14:27,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:14:27,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:14:27,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:14:27,140 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:14:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:14:28,168 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-27 08:14:28,631 WARN L179 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-10-27 08:14:29,038 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 243 proven. 169 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:14:29,039 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:14:29,039 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:14:29,039 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-10-27 08:14:29,040 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:14:29,045 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:14:29,046 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:14:29,333 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:14:29,333 INFO L272 AbstractInterpreter]: Visited 109 different actions 314 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:14:29,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:14:29,337 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:14:29,675 INFO L227 lantSequenceWeakener]: Weakened 334 states. On average, predicates are now at 83.99% of their original sizes. [2018-10-27 08:14:29,675 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:14:29,921 INFO L415 sIntCurrentIteration]: We unified 336 AI predicates to 336 [2018-10-27 08:14:29,921 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:14:29,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:14:29,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2018-10-27 08:14:29,922 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:14:29,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:14:29,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:14:29,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:14:29,923 INFO L87 Difference]: Start difference. First operand 16631 states and 20728 transitions. Second operand 9 states. [2018-10-27 08:15:08,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:15:08,263 INFO L93 Difference]: Finished difference Result 33578 states and 41884 transitions. [2018-10-27 08:15:08,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 08:15:08,264 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 337 [2018-10-27 08:15:08,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:15:08,320 INFO L225 Difference]: With dead ends: 33578 [2018-10-27 08:15:08,320 INFO L226 Difference]: Without dead ends: 17261 [2018-10-27 08:15:08,356 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 342 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-10-27 08:15:08,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17261 states. [2018-10-27 08:15:08,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17261 to 17258. [2018-10-27 08:15:08,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17258 states. [2018-10-27 08:15:08,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17258 states to 17258 states and 21400 transitions. [2018-10-27 08:15:08,664 INFO L78 Accepts]: Start accepts. Automaton has 17258 states and 21400 transitions. Word has length 337 [2018-10-27 08:15:08,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:15:08,664 INFO L481 AbstractCegarLoop]: Abstraction has 17258 states and 21400 transitions. [2018-10-27 08:15:08,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:15:08,665 INFO L276 IsEmpty]: Start isEmpty. Operand 17258 states and 21400 transitions. [2018-10-27 08:15:08,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2018-10-27 08:15:08,681 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:15:08,682 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:15:08,682 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:15:08,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:15:08,683 INFO L82 PathProgramCache]: Analyzing trace with hash 860033750, now seen corresponding path program 1 times [2018-10-27 08:15:08,683 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:15:08,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:15:08,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:15:08,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:15:08,684 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:15:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:15:09,493 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:15:09,494 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:15:09,494 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:15:09,494 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 434 with the following transitions: [2018-10-27 08:15:09,495 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [644], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:15:09,516 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:15:09,517 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:15:10,646 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:15:10,647 INFO L272 AbstractInterpreter]: Visited 296 different actions 1169 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:15:10,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:15:10,683 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:15:10,683 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:15:10,683 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:15:10,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:15:10,693 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:15:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:15:10,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:15:11,341 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:15:11,341 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:15:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:15:11,938 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:15:11,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 08:15:11,939 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:15:11,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:15:11,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:15:11,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-27 08:15:11,942 INFO L87 Difference]: Start difference. First operand 17258 states and 21400 transitions. Second operand 9 states. [2018-10-27 08:15:23,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:15:23,565 INFO L93 Difference]: Finished difference Result 42611 states and 60028 transitions. [2018-10-27 08:15:23,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 08:15:23,565 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 433 [2018-10-27 08:15:23,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:15:23,786 INFO L225 Difference]: With dead ends: 42611 [2018-10-27 08:15:23,786 INFO L226 Difference]: Without dead ends: 26294 [2018-10-27 08:15:24,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 868 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2018-10-27 08:15:24,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26294 states. [2018-10-27 08:15:24,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26294 to 26156. [2018-10-27 08:15:24,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26156 states. [2018-10-27 08:15:24,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26156 states to 26156 states and 33216 transitions. [2018-10-27 08:15:24,916 INFO L78 Accepts]: Start accepts. Automaton has 26156 states and 33216 transitions. Word has length 433 [2018-10-27 08:15:24,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:15:24,917 INFO L481 AbstractCegarLoop]: Abstraction has 26156 states and 33216 transitions. [2018-10-27 08:15:24,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:15:24,917 INFO L276 IsEmpty]: Start isEmpty. Operand 26156 states and 33216 transitions. [2018-10-27 08:15:24,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-10-27 08:15:24,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:15:24,935 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:15:24,936 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:15:24,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:15:24,936 INFO L82 PathProgramCache]: Analyzing trace with hash 972061646, now seen corresponding path program 1 times [2018-10-27 08:15:24,937 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:15:24,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:15:24,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:15:24,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:15:24,938 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:15:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:15:25,610 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 332 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 08:15:25,611 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:15:25,611 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:15:25,611 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 444 with the following transitions: [2018-10-27 08:15:25,612 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [644], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:15:25,619 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:15:25,619 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:15:27,166 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:15:27,167 INFO L272 AbstractInterpreter]: Visited 211 different actions 1040 times. Merged at 8 different actions 32 times. Never widened. Found 7 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 08:15:27,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:15:27,205 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:15:27,205 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:15:27,205 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:15:27,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:15:27,223 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:15:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:15:27,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:15:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 332 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 08:15:28,039 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:15:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 332 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 08:15:28,327 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:15:28,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 08:15:28,328 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:15:28,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:15:28,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:15:28,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-27 08:15:28,330 INFO L87 Difference]: Start difference. First operand 26156 states and 33216 transitions. Second operand 9 states. [2018-10-27 08:15:41,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:15:41,776 INFO L93 Difference]: Finished difference Result 54936 states and 70447 transitions. [2018-10-27 08:15:41,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 08:15:41,777 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 443 [2018-10-27 08:15:41,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:15:41,910 INFO L225 Difference]: With dead ends: 54936 [2018-10-27 08:15:41,910 INFO L226 Difference]: Without dead ends: 29721 [2018-10-27 08:15:42,086 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 909 GetRequests, 890 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2018-10-27 08:15:42,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29721 states. [2018-10-27 08:15:42,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29721 to 29439. [2018-10-27 08:15:42,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29439 states. [2018-10-27 08:15:42,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29439 states to 29439 states and 34528 transitions. [2018-10-27 08:15:42,667 INFO L78 Accepts]: Start accepts. Automaton has 29439 states and 34528 transitions. Word has length 443 [2018-10-27 08:15:42,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:15:42,668 INFO L481 AbstractCegarLoop]: Abstraction has 29439 states and 34528 transitions. [2018-10-27 08:15:42,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:15:42,669 INFO L276 IsEmpty]: Start isEmpty. Operand 29439 states and 34528 transitions. [2018-10-27 08:15:42,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2018-10-27 08:15:42,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:15:42,722 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2018-10-27 08:15:42,722 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:15:42,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:15:42,723 INFO L82 PathProgramCache]: Analyzing trace with hash 2095518928, now seen corresponding path program 1 times [2018-10-27 08:15:42,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:15:42,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:15:42,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:15:42,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:15:42,724 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:15:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:15:45,768 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 125 proven. 622 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-27 08:15:45,769 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:15:45,769 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:15:45,769 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 613 with the following transitions: [2018-10-27 08:15:45,769 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [644], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1060], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:15:45,774 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:15:45,774 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:15:46,817 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:15:46,817 INFO L272 AbstractInterpreter]: Visited 212 different actions 1045 times. Merged at 9 different actions 32 times. Never widened. Found 9 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:15:46,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:15:46,825 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:15:46,825 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:15:46,825 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:15:46,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:15:46,834 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:15:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:15:47,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:15:47,951 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 596 proven. 41 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2018-10-27 08:15:47,952 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:15:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 227 proven. 508 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-27 08:15:48,995 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:15:48,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 25 [2018-10-27 08:15:48,996 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:15:48,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-27 08:15:48,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-27 08:15:48,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2018-10-27 08:15:48,998 INFO L87 Difference]: Start difference. First operand 29439 states and 34528 transitions. Second operand 20 states. Received shutdown request... [2018-10-27 08:16:00,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-27 08:16:00,279 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:16:00,285 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:16:00,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:16:00 BoogieIcfgContainer [2018-10-27 08:16:00,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:16:00,286 INFO L168 Benchmark]: Toolchain (without parser) took 224337.74 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 712.3 MB. Max. memory is 7.1 GB. [2018-10-27 08:16:00,288 INFO L168 Benchmark]: CDTParser took 0.18 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. [2018-10-27 08:16:00,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1271.47 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-10-27 08:16:00,289 INFO L168 Benchmark]: Boogie Procedure Inliner took 411.55 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 732.4 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -847.5 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-27 08:16:00,290 INFO L168 Benchmark]: Boogie Preprocessor took 238.82 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2018-10-27 08:16:00,291 INFO L168 Benchmark]: RCFGBuilder took 8101.03 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 309.3 MB). Peak memory consumption was 309.3 MB. Max. memory is 7.1 GB. [2018-10-27 08:16:00,291 INFO L168 Benchmark]: TraceAbstraction took 214310.44 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 1.8 GB in the beginning and 3.1 GB in the end (delta: -1.3 GB). Peak memory consumption was 383.7 MB. Max. memory is 7.1 GB. [2018-10-27 08:16:00,296 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 1271.47 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 411.55 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 732.4 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -847.5 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 238.82 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8101.03 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 309.3 MB). Peak memory consumption was 309.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214310.44 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 1.8 GB in the beginning and 3.1 GB in the end (delta: -1.3 GB). Peak memory consumption was 383.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 166]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 166). Cancelled while BasicCegarLoop was constructing difference of abstraction (29439states) and FLOYD_HOARE automaton (currently 50 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (11509 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 214.2s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 190.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2705 SDtfs, 21167 SDslu, 3282 SDs, 0 SdLazy, 30064 SolverSat, 5121 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 141.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 3739 GetRequests, 3592 SyntacticMatches, 5 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1510 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29439occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.0s AbstIntTime, 5 AbstIntIterations, 2 AbstIntStrong, 0.9970529203839968 AbsIntWeakeningRatio, 0.10069444444444445 AbsIntAvgWeakeningVarsNumRemoved, 15.440972222222221 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 1171 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 4263 NumberOfCodeBlocks, 4263 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 5735 ConstructedInterpolants, 0 QuantifiedInterpolants, 15187560 SizeOfPredicates, 8 NumberOfNonLiveVariables, 2144 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 16 InterpolantComputations, 5 PerfectInterpolantSequences, 3939/5293 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown