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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label23_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 13:40:44,026 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 13:40:44,030 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 13:40:44,049 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 13:40:44,049 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 13:40:44,051 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 13:40:44,053 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 13:40:44,055 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 13:40:44,057 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 13:40:44,063 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 13:40:44,064 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 13:40:44,067 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 13:40:44,068 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 13:40:44,069 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 13:40:44,070 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 13:40:44,071 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 13:40:44,071 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 13:40:44,073 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 13:40:44,075 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 13:40:44,076 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 13:40:44,077 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 13:40:44,079 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 13:40:44,081 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 13:40:44,081 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 13:40:44,081 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 13:40:44,082 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 13:40:44,083 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 13:40:44,084 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 13:40:44,085 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 13:40:44,086 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 13:40:44,086 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 13:40:44,087 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 13:40:44,087 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 13:40:44,087 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 13:40:44,088 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 13:40:44,088 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 13:40:44,089 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 13:40:44,113 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 13:40:44,113 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 13:40:44,114 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 13:40:44,114 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 13:40:44,114 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 13:40:44,115 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 13:40:44,115 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 13:40:44,115 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 13:40:44,115 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 13:40:44,115 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 13:40:44,116 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 13:40:44,116 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 13:40:44,116 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 13:40:44,117 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 13:40:44,117 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 13:40:44,117 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 13:40:44,117 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 13:40:44,117 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 13:40:44,118 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 13:40:44,118 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 13:40:44,118 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 13:40:44,118 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 13:40:44,118 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 13:40:44,119 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 13:40:44,119 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 13:40:44,119 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 13:40:44,119 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 13:40:44,119 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 13:40:44,120 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 13:40:44,120 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 13:40:44,120 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 13:40:44,120 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 13:40:44,120 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 13:40:44,121 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 13:40:44,164 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 13:40:44,180 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 13:40:44,184 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 13:40:44,186 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 13:40:44,186 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 13:40:44,187 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label23_true-unreach-call.c [2018-10-27 13:40:44,254 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cc4b95815/4b1752c862c0461fa84e27fcbbe19bb3/FLAG75eed125c [2018-10-27 13:40:44,842 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 13:40:44,843 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label23_true-unreach-call.c [2018-10-27 13:40:44,868 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cc4b95815/4b1752c862c0461fa84e27fcbbe19bb3/FLAG75eed125c [2018-10-27 13:40:44,892 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cc4b95815/4b1752c862c0461fa84e27fcbbe19bb3 [2018-10-27 13:40:44,909 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 13:40:44,912 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 13:40:44,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 13:40:44,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 13:40:44,919 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 13:40:44,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:40:44" (1/1) ... [2018-10-27 13:40:44,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a192096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:44, skipping insertion in model container [2018-10-27 13:40:44,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:40:44" (1/1) ... [2018-10-27 13:40:44,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 13:40:45,008 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 13:40:45,428 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 13:40:45,433 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 13:40:45,596 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 13:40:45,621 INFO L193 MainTranslator]: Completed translation [2018-10-27 13:40:45,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:45 WrapperNode [2018-10-27 13:40:45,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 13:40:45,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 13:40:45,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 13:40:45,624 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 13:40:45,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:45" (1/1) ... [2018-10-27 13:40:45,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:45" (1/1) ... [2018-10-27 13:40:45,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 13:40:45,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 13:40:45,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 13:40:45,874 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 13:40:45,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:45" (1/1) ... [2018-10-27 13:40:45,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:45" (1/1) ... [2018-10-27 13:40:45,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:45" (1/1) ... [2018-10-27 13:40:45,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:45" (1/1) ... [2018-10-27 13:40:45,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:45" (1/1) ... [2018-10-27 13:40:45,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:45" (1/1) ... [2018-10-27 13:40:45,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:45" (1/1) ... [2018-10-27 13:40:45,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 13:40:45,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 13:40:45,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 13:40:45,965 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 13:40:45,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:45" (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 13:40:46,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 13:40:46,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 13:40:46,049 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 13:40:46,050 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 13:40:46,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 13:40:46,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 13:40:46,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 13:40:46,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 13:40:49,284 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 13:40:49,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:40:49 BoogieIcfgContainer [2018-10-27 13:40:49,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 13:40:49,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 13:40:49,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 13:40:49,290 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 13:40:49,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:40:44" (1/3) ... [2018-10-27 13:40:49,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1716ddae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:40:49, skipping insertion in model container [2018-10-27 13:40:49,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:40:45" (2/3) ... [2018-10-27 13:40:49,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1716ddae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:40:49, skipping insertion in model container [2018-10-27 13:40:49,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:40:49" (3/3) ... [2018-10-27 13:40:49,294 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label23_true-unreach-call.c [2018-10-27 13:40:49,306 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 13:40:49,316 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 13:40:49,336 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 13:40:49,383 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 13:40:49,384 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 13:40:49,384 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 13:40:49,384 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 13:40:49,384 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 13:40:49,384 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 13:40:49,385 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 13:40:49,385 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 13:40:49,428 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-27 13:40:49,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-27 13:40:49,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:40:49,442 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] [2018-10-27 13:40:49,447 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:40:49,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:40:49,456 INFO L82 PathProgramCache]: Analyzing trace with hash 508483465, now seen corresponding path program 1 times [2018-10-27 13:40:49,459 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:40:49,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:40:49,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:40:49,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:40:49,522 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:40:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:40:50,019 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 13:40:50,023 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:40:50,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 13:40:50,024 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:40:50,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 13:40:50,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 13:40:50,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 13:40:50,054 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-27 13:40:51,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:40:51,856 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-27 13:40:51,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 13:40:51,860 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2018-10-27 13:40:51,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:40:51,878 INFO L225 Difference]: With dead ends: 574 [2018-10-27 13:40:51,878 INFO L226 Difference]: Without dead ends: 356 [2018-10-27 13:40:51,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 13:40:51,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-27 13:40:51,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-27 13:40:51,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-27 13:40:51,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-27 13:40:51,973 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 53 [2018-10-27 13:40:51,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:40:51,974 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-27 13:40:51,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 13:40:51,975 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-27 13:40:51,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-27 13:40:51,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:40:51,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:40:51,984 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:40:51,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:40:51,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1327667053, now seen corresponding path program 1 times [2018-10-27 13:40:51,985 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:40:51,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:40:51,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:40:51,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:40:51,987 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:40:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:40:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 13:40:52,415 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:40:52,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 13:40:52,416 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:40:52,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 13:40:52,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 13:40:52,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 13:40:52,421 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-10-27 13:40:57,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:40:57,395 INFO L93 Difference]: Finished difference Result 1289 states and 2315 transitions. [2018-10-27 13:40:57,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 13:40:57,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2018-10-27 13:40:57,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:40:57,408 INFO L225 Difference]: With dead ends: 1289 [2018-10-27 13:40:57,408 INFO L226 Difference]: Without dead ends: 939 [2018-10-27 13:40:57,413 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 13:40:57,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2018-10-27 13:40:57,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 926. [2018-10-27 13:40:57,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2018-10-27 13:40:57,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1444 transitions. [2018-10-27 13:40:57,486 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1444 transitions. Word has length 136 [2018-10-27 13:40:57,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:40:57,487 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1444 transitions. [2018-10-27 13:40:57,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 13:40:57,487 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1444 transitions. [2018-10-27 13:40:57,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-27 13:40:57,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:40:57,494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:40:57,494 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:40:57,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:40:57,494 INFO L82 PathProgramCache]: Analyzing trace with hash -734844493, now seen corresponding path program 1 times [2018-10-27 13:40:57,495 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:40:57,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:40:57,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:40:57,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:40:57,497 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:40:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:40:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 13:40:57,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:40:57,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 13:40:57,762 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:40:57,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 13:40:57,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 13:40:57,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 13:40:57,764 INFO L87 Difference]: Start difference. First operand 926 states and 1444 transitions. Second operand 6 states. [2018-10-27 13:41:01,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:41:01,645 INFO L93 Difference]: Finished difference Result 2537 states and 4091 transitions. [2018-10-27 13:41:01,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 13:41:01,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-10-27 13:41:01,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:41:01,662 INFO L225 Difference]: With dead ends: 2537 [2018-10-27 13:41:01,662 INFO L226 Difference]: Without dead ends: 1617 [2018-10-27 13:41:01,670 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 13:41:01,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2018-10-27 13:41:01,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1586. [2018-10-27 13:41:01,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2018-10-27 13:41:01,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 2321 transitions. [2018-10-27 13:41:01,746 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 2321 transitions. Word has length 152 [2018-10-27 13:41:01,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:41:01,747 INFO L481 AbstractCegarLoop]: Abstraction has 1586 states and 2321 transitions. [2018-10-27 13:41:01,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 13:41:01,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 2321 transitions. [2018-10-27 13:41:01,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-27 13:41:01,757 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:41:01,757 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:41:01,757 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:41:01,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:41:01,758 INFO L82 PathProgramCache]: Analyzing trace with hash -829584541, now seen corresponding path program 1 times [2018-10-27 13:41:01,758 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:41:01,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:41:01,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:41:01,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:41:01,761 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:41:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:41:02,099 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 13:41:02,522 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 13:41:02,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:41:02,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 13:41:02,523 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:41:02,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 13:41:02,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 13:41:02,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 13:41:02,526 INFO L87 Difference]: Start difference. First operand 1586 states and 2321 transitions. Second operand 6 states. [2018-10-27 13:41:03,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:41:03,952 INFO L93 Difference]: Finished difference Result 3508 states and 5316 transitions. [2018-10-27 13:41:03,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 13:41:03,954 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-10-27 13:41:03,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:41:03,968 INFO L225 Difference]: With dead ends: 3508 [2018-10-27 13:41:03,968 INFO L226 Difference]: Without dead ends: 1928 [2018-10-27 13:41:03,975 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 13:41:03,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2018-10-27 13:41:04,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1889. [2018-10-27 13:41:04,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1889 states. [2018-10-27 13:41:04,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2675 transitions. [2018-10-27 13:41:04,040 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2675 transitions. Word has length 176 [2018-10-27 13:41:04,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:41:04,040 INFO L481 AbstractCegarLoop]: Abstraction has 1889 states and 2675 transitions. [2018-10-27 13:41:04,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 13:41:04,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2675 transitions. [2018-10-27 13:41:04,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-27 13:41:04,048 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:41:04,049 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 13:41:04,049 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:41:04,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:41:04,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1805277256, now seen corresponding path program 1 times [2018-10-27 13:41:04,050 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:41:04,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:41:04,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:41:04,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:41:04,051 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:41:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:41:04,481 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 13:41:04,664 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 13:41:05,144 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 13:41:05,144 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 13:41:05,145 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 13:41:05,146 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-10-27 13:41:05,148 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], [257], [265], [273], [281], [289], [297], [305], [313], [321], [325], [327], [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], [534], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-27 13:41:05,205 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 13:41:05,205 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 13:41:05,750 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 13:41:06,794 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 13:41:06,800 INFO L272 AbstractInterpreter]: Visited 91 different actions 516 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 13:41:06,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:41:06,847 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 13:41:07,567 INFO L227 lantSequenceWeakener]: Weakened 213 states. On average, predicates are now at 73.41% of their original sizes. [2018-10-27 13:41:07,567 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 13:41:08,335 INFO L415 sIntCurrentIteration]: We unified 215 AI predicates to 215 [2018-10-27 13:41:08,336 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 13:41:08,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 13:41:08,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-10-27 13:41:08,337 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:41:08,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 13:41:08,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 13:41:08,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-10-27 13:41:08,342 INFO L87 Difference]: Start difference. First operand 1889 states and 2675 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown