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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:15:31,037 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:15:31,039 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:15:31,051 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:15:31,051 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:15:31,052 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:15:31,054 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:15:31,055 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:15:31,057 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:15:31,058 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:15:31,059 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:15:31,059 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:15:31,060 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:15:31,061 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:15:31,062 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:15:31,063 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:15:31,064 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:15:31,066 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:15:31,071 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:15:31,072 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:15:31,074 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:15:31,075 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:15:31,080 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:15:31,080 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:15:31,081 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:15:31,083 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:15:31,084 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:15:31,089 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:15:31,091 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:15:31,093 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:15:31,094 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:15:31,094 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:15:31,096 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:15:31,096 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:15:31,097 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:15:31,098 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:15:31,098 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:15:31,129 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:15:31,129 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:15:31,131 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:15:31,131 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:15:31,131 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:15:31,132 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:15:31,134 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:15:31,134 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:15:31,135 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:15:31,135 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:15:31,135 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:15:31,135 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:15:31,136 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:15:31,136 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:15:31,136 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:15:31,138 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:15:31,138 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:15:31,138 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:15:31,138 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:15:31,138 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:15:31,139 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:15:31,139 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:15:31,139 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:15:31,139 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:15:31,139 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:15:31,140 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:15:31,140 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:15:31,140 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:15:31,140 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:15:31,141 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:15:31,141 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:15:31,141 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:15:31,141 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:15:31,141 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:15:31,211 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:15:31,231 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:15:31,235 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:15:31,237 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:15:31,237 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:15:31,238 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label22_true-unreach-call.c [2018-11-07 14:15:31,306 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fd23d07e/397e717a3a534a86a4788146ad070b9c/FLAGecb399dec [2018-11-07 14:15:31,896 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:15:31,897 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label22_true-unreach-call.c [2018-11-07 14:15:31,916 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fd23d07e/397e717a3a534a86a4788146ad070b9c/FLAGecb399dec [2018-11-07 14:15:31,934 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fd23d07e/397e717a3a534a86a4788146ad070b9c [2018-11-07 14:15:31,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:15:31,951 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:15:31,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:15:31,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:15:31,957 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:15:31,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:15:31" (1/1) ... [2018-11-07 14:15:31,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@567b4d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:31, skipping insertion in model container [2018-11-07 14:15:31,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:15:31" (1/1) ... [2018-11-07 14:15:31,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:15:32,037 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:15:32,504 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:15:32,509 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:15:32,655 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:15:32,674 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:15:32,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:32 WrapperNode [2018-11-07 14:15:32,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:15:32,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:15:32,676 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:15:32,676 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:15:32,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:32" (1/1) ... [2018-11-07 14:15:32,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:32" (1/1) ... [2018-11-07 14:15:32,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:15:32,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:15:32,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:15:32,806 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:15:32,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:32" (1/1) ... [2018-11-07 14:15:32,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:32" (1/1) ... [2018-11-07 14:15:32,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:32" (1/1) ... [2018-11-07 14:15:32,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:32" (1/1) ... [2018-11-07 14:15:32,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:32" (1/1) ... [2018-11-07 14:15:32,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:32" (1/1) ... [2018-11-07 14:15:32,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:32" (1/1) ... [2018-11-07 14:15:32,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:15:32,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:15:32,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:15:32,886 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:15:32,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:15:32,955 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:15:32,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:15:32,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:15:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:15:32,956 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:15:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:15:32,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:15:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:15:32,956 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:15:35,960 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:15:35,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:15:35 BoogieIcfgContainer [2018-11-07 14:15:35,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:15:35,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:15:35,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:15:35,966 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:15:35,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:15:31" (1/3) ... [2018-11-07 14:15:35,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17fc28a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:15:35, skipping insertion in model container [2018-11-07 14:15:35,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:32" (2/3) ... [2018-11-07 14:15:35,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17fc28a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:15:35, skipping insertion in model container [2018-11-07 14:15:35,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:15:35" (3/3) ... [2018-11-07 14:15:35,970 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label22_true-unreach-call.c [2018-11-07 14:15:35,981 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:15:35,990 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:15:36,009 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:15:36,050 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:15:36,050 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:15:36,051 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:15:36,051 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:15:36,051 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:15:36,051 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:15:36,052 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:15:36,052 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:15:36,081 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-07 14:15:36,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-07 14:15:36,090 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:15:36,091 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] [2018-11-07 14:15:36,093 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:15:36,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:15:36,100 INFO L82 PathProgramCache]: Analyzing trace with hash 625689180, now seen corresponding path program 1 times [2018-11-07 14:15:36,103 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:15:36,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:15:36,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:15:36,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:15:36,154 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:15:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:15:36,589 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 14:15:36,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:15:36,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:15:36,592 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:15:36,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:15:36,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:15:36,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:15:36,617 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2018-11-07 14:15:39,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:15:39,123 INFO L93 Difference]: Finished difference Result 737 states and 1298 transitions. [2018-11-07 14:15:39,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:15:39,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-11-07 14:15:39,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:15:39,145 INFO L225 Difference]: With dead ends: 737 [2018-11-07 14:15:39,145 INFO L226 Difference]: Without dead ends: 515 [2018-11-07 14:15:39,154 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:15:39,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-11-07 14:15:39,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2018-11-07 14:15:39,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2018-11-07 14:15:39,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 848 transitions. [2018-11-07 14:15:39,258 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 848 transitions. Word has length 44 [2018-11-07 14:15:39,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:15:39,259 INFO L480 AbstractCegarLoop]: Abstraction has 515 states and 848 transitions. [2018-11-07 14:15:39,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:15:39,259 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 848 transitions. [2018-11-07 14:15:39,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-11-07 14:15:39,267 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:15:39,267 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:39,267 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:15:39,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:15:39,268 INFO L82 PathProgramCache]: Analyzing trace with hash 2101120931, now seen corresponding path program 1 times [2018-11-07 14:15:39,268 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:15:39,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:15:39,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:15:39,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:15:39,270 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:15:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:15:39,631 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:15:39,632 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:15:39,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:15:39,632 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:15:39,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:15:39,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:15:39,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:15:39,636 INFO L87 Difference]: Start difference. First operand 515 states and 848 transitions. Second operand 6 states. [2018-11-07 14:15:42,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:15:42,505 INFO L93 Difference]: Finished difference Result 1863 states and 3251 transitions. [2018-11-07 14:15:42,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:15:42,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-11-07 14:15:42,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:15:42,522 INFO L225 Difference]: With dead ends: 1863 [2018-11-07 14:15:42,523 INFO L226 Difference]: Without dead ends: 1354 [2018-11-07 14:15:42,533 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:15:42,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2018-11-07 14:15:42,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1331. [2018-11-07 14:15:42,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2018-11-07 14:15:42,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 2051 transitions. [2018-11-07 14:15:42,620 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 2051 transitions. Word has length 119 [2018-11-07 14:15:42,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:15:42,621 INFO L480 AbstractCegarLoop]: Abstraction has 1331 states and 2051 transitions. [2018-11-07 14:15:42,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:15:42,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 2051 transitions. [2018-11-07 14:15:42,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-07 14:15:42,627 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:15:42,627 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:42,627 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:15:42,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:15:42,628 INFO L82 PathProgramCache]: Analyzing trace with hash 51887807, now seen corresponding path program 1 times [2018-11-07 14:15:42,628 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:15:42,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:15:42,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:15:42,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:15:42,630 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:15:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:15:43,008 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:15:43,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:15:43,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:15:43,009 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:15:43,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:15:43,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:15:43,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:15:43,011 INFO L87 Difference]: Start difference. First operand 1331 states and 2051 transitions. Second operand 6 states. [2018-11-07 14:15:46,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:15:46,926 INFO L93 Difference]: Finished difference Result 3512 states and 5693 transitions. [2018-11-07 14:15:46,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:15:46,927 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-11-07 14:15:46,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:15:46,944 INFO L225 Difference]: With dead ends: 3512 [2018-11-07 14:15:46,945 INFO L226 Difference]: Without dead ends: 2187 [2018-11-07 14:15:46,958 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:15:46,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2018-11-07 14:15:47,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2165. [2018-11-07 14:15:47,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2165 states. [2018-11-07 14:15:47,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2165 states to 2165 states and 3178 transitions. [2018-11-07 14:15:47,040 INFO L78 Accepts]: Start accepts. Automaton has 2165 states and 3178 transitions. Word has length 121 [2018-11-07 14:15:47,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:15:47,041 INFO L480 AbstractCegarLoop]: Abstraction has 2165 states and 3178 transitions. [2018-11-07 14:15:47,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:15:47,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2165 states and 3178 transitions. [2018-11-07 14:15:47,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-07 14:15:47,047 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:15:47,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:47,047 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:15:47,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:15:47,048 INFO L82 PathProgramCache]: Analyzing trace with hash -344279760, now seen corresponding path program 1 times [2018-11-07 14:15:47,048 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:15:47,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:15:47,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:15:47,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:15:47,054 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:15:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:15:47,390 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:15:47,390 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:15:47,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 14:15:47,391 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:15:47,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:15:47,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:15:47,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:15:47,392 INFO L87 Difference]: Start difference. First operand 2165 states and 3178 transitions. Second operand 7 states. [2018-11-07 14:15:49,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:15:49,709 INFO L93 Difference]: Finished difference Result 5115 states and 7643 transitions. [2018-11-07 14:15:49,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 14:15:49,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2018-11-07 14:15:49,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:15:49,725 INFO L225 Difference]: With dead ends: 5115 [2018-11-07 14:15:49,726 INFO L226 Difference]: Without dead ends: 2160 [2018-11-07 14:15:49,746 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:15:49,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2160 states. [2018-11-07 14:15:49,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2160 to 2160. [2018-11-07 14:15:49,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2160 states. [2018-11-07 14:15:49,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 3146 transitions. [2018-11-07 14:15:49,815 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 3146 transitions. Word has length 124 [2018-11-07 14:15:49,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:15:49,815 INFO L480 AbstractCegarLoop]: Abstraction has 2160 states and 3146 transitions. [2018-11-07 14:15:49,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 14:15:49,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 3146 transitions. [2018-11-07 14:15:49,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 14:15:49,818 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:15:49,818 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:49,819 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:15:49,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:15:49,819 INFO L82 PathProgramCache]: Analyzing trace with hash -303205129, now seen corresponding path program 1 times [2018-11-07 14:15:49,819 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:15:49,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:15:49,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:15:49,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:15:49,821 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:15:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:15:50,107 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:15:50,333 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 14:15:50,333 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:15:50,333 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:15:50,335 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 126 with the following transitions: [2018-11-07 14:15:50,337 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [253], [255], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [538], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 14:15:50,408 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:15:50,408 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:15:50,901 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:15:50,913 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:15:50,914 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 14:15:50,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:15:50,960 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:15:51,335 INFO L227 lantSequenceWeakener]: Weakened 119 states. On average, predicates are now at 73.49% of their original sizes. [2018-11-07 14:15:51,336 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:15:51,504 INFO L415 sIntCurrentIteration]: We unified 124 AI predicates to 124 [2018-11-07 14:15:51,505 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:15:51,506 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:15:51,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2018-11-07 14:15:51,506 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:15:51,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:15:51,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:15:51,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:15:51,508 INFO L87 Difference]: Start difference. First operand 2160 states and 3146 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown