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-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label46_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:06:33,025 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:06:33,028 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:06:33,044 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:06:33,044 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:06:33,045 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:06:33,048 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:06:33,050 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:06:33,054 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:06:33,055 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:06:33,057 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:06:33,057 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:06:33,059 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:06:33,060 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:06:33,061 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:06:33,062 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:06:33,070 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:06:33,072 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:06:33,080 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:06:33,081 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:06:33,082 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:06:33,084 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:06:33,086 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:06:33,086 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:06:33,086 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:06:33,087 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:06:33,088 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:06:33,089 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:06:33,089 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:06:33,090 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:06:33,091 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:06:33,091 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:06:33,091 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:06:33,092 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:06:33,093 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:06:33,093 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:06:33,094 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-LIM.epf [2018-11-12 19:06:33,113 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:06:33,114 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:06:33,114 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:06:33,115 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:06:33,115 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:06:33,115 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:06:33,115 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:06:33,115 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:06:33,116 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:06:33,116 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:06:33,116 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:06:33,116 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:06:33,116 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:06:33,121 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:06:33,121 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:06:33,121 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:06:33,121 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:06:33,121 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:06:33,123 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:06:33,123 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:06:33,124 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:06:33,124 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:06:33,124 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:06:33,124 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:06:33,124 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:06:33,125 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:06:33,125 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:06:33,125 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:06:33,125 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:06:33,126 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:06:33,126 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:06:33,126 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:06:33,126 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:06:33,126 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:06:33,127 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:06:33,188 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:06:33,207 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:06:33,212 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:06:33,214 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:06:33,214 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:06:33,215 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label46_true-unreach-call_false-termination.c [2018-11-12 19:06:33,285 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c183dd8ff/b10e766345c549108cf1ceb8a6ee1e8d/FLAG89c2a9285 [2018-11-12 19:06:33,897 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:06:33,898 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label46_true-unreach-call_false-termination.c [2018-11-12 19:06:33,912 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c183dd8ff/b10e766345c549108cf1ceb8a6ee1e8d/FLAG89c2a9285 [2018-11-12 19:06:33,928 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c183dd8ff/b10e766345c549108cf1ceb8a6ee1e8d [2018-11-12 19:06:33,941 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:06:33,942 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:06:33,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:06:33,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:06:33,948 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:06:33,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:06:33" (1/1) ... [2018-11-12 19:06:33,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2543e827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:06:33, skipping insertion in model container [2018-11-12 19:06:33,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:06:33" (1/1) ... [2018-11-12 19:06:33,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:06:34,033 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:06:34,518 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:06:34,523 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:06:34,708 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:06:34,733 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:06:34,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:06:34 WrapperNode [2018-11-12 19:06:34,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:06:34,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:06:34,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:06:34,735 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:06:34,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:06:34" (1/1) ... [2018-11-12 19:06:34,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:06:34" (1/1) ... [2018-11-12 19:06:34,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:06:34,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:06:34,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:06:34,882 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:06:34,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:06:34" (1/1) ... [2018-11-12 19:06:34,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:06:34" (1/1) ... [2018-11-12 19:06:34,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:06:34" (1/1) ... [2018-11-12 19:06:34,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:06:34" (1/1) ... [2018-11-12 19:06:34,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:06:34" (1/1) ... [2018-11-12 19:06:34,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:06:34" (1/1) ... [2018-11-12 19:06:34,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:06:34" (1/1) ... [2018-11-12 19:06:35,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:06:35,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:06:35,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:06:35,010 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:06:35,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:06:34" (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 [2018-11-12 19:06:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:06:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:06:35,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:06:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:06:35,085 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:06:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:06:35,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:06:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:06:35,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:06:38,621 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:06:38,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:06:38 BoogieIcfgContainer [2018-11-12 19:06:38,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:06:38,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:06:38,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:06:38,629 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:06:38,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:06:33" (1/3) ... [2018-11-12 19:06:38,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495f728d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:06:38, skipping insertion in model container [2018-11-12 19:06:38,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:06:34" (2/3) ... [2018-11-12 19:06:38,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495f728d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:06:38, skipping insertion in model container [2018-11-12 19:06:38,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:06:38" (3/3) ... [2018-11-12 19:06:38,636 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label46_true-unreach-call_false-termination.c [2018-11-12 19:06:38,647 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:06:38,659 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:06:38,679 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:06:38,718 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:06:38,719 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:06:38,719 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:06:38,719 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:06:38,719 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:06:38,720 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:06:38,720 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:06:38,720 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:06:38,750 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-12 19:06:38,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-12 19:06:38,759 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:06:38,760 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] [2018-11-12 19:06:38,763 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:06:38,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:06:38,770 INFO L82 PathProgramCache]: Analyzing trace with hash -956802812, now seen corresponding path program 1 times [2018-11-12 19:06:38,773 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:06:38,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:06:38,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:06:38,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:06:38,827 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:06:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:06:39,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:06:39,186 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:06:39,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:06:39,186 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:06:39,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:06:39,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:06:39,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:06:39,212 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-12 19:06:41,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:06:41,079 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-12 19:06:41,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:06:41,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2018-11-12 19:06:41,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:06:41,102 INFO L225 Difference]: With dead ends: 691 [2018-11-12 19:06:41,103 INFO L226 Difference]: Without dead ends: 434 [2018-11-12 19:06:41,111 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:06:41,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-12 19:06:41,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-12 19:06:41,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-12 19:06:41,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-12 19:06:41,196 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 46 [2018-11-12 19:06:41,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:06:41,197 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-12 19:06:41,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:06:41,197 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-12 19:06:41,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-11-12 19:06:41,205 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:06:41,206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:06:41,206 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:06:41,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:06:41,206 INFO L82 PathProgramCache]: Analyzing trace with hash -910572689, now seen corresponding path program 1 times [2018-11-12 19:06:41,207 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:06:41,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:06:41,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:06:41,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:06:41,208 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:06:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:06:41,517 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:06:41,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:06:41,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:06:41,518 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:06:41,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:06:41,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:06:41,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:06:41,521 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-12 19:06:43,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:06:43,536 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-11-12 19:06:43,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:06:43,537 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-11-12 19:06:43,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:06:43,544 INFO L225 Difference]: With dead ends: 1062 [2018-11-12 19:06:43,544 INFO L226 Difference]: Without dead ends: 634 [2018-11-12 19:06:43,546 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 [2018-11-12 19:06:43,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-11-12 19:06:43,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-11-12 19:06:43,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-11-12 19:06:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-11-12 19:06:43,589 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 133 [2018-11-12 19:06:43,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:06:43,590 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-11-12 19:06:43,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:06:43,590 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-11-12 19:06:43,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-11-12 19:06:43,594 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:06:43,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:06:43,595 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:06:43,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:06:43,595 INFO L82 PathProgramCache]: Analyzing trace with hash 156539316, now seen corresponding path program 1 times [2018-11-12 19:06:43,596 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:06:43,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:06:43,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:06:43,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:06:43,597 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:06:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:06:43,795 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:06:43,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:06:43,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:06:43,796 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:06:43,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:06:43,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:06:43,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:06:43,798 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-11-12 19:06:47,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:06:47,453 INFO L93 Difference]: Finished difference Result 2352 states and 4010 transitions. [2018-11-12 19:06:47,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:06:47,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2018-11-12 19:06:47,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:06:47,475 INFO L225 Difference]: With dead ends: 2352 [2018-11-12 19:06:47,475 INFO L226 Difference]: Without dead ends: 1733 [2018-11-12 19:06:47,484 INFO L604 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 [2018-11-12 19:06:47,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2018-11-12 19:06:47,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1733. [2018-11-12 19:06:47,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-11-12 19:06:47,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2678 transitions. [2018-11-12 19:06:47,574 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2678 transitions. Word has length 142 [2018-11-12 19:06:47,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:06:47,575 INFO L480 AbstractCegarLoop]: Abstraction has 1733 states and 2678 transitions. [2018-11-12 19:06:47,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:06:47,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2678 transitions. [2018-11-12 19:06:47,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-11-12 19:06:47,589 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:06:47,589 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:06:47,590 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:06:47,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:06:47,590 INFO L82 PathProgramCache]: Analyzing trace with hash -559015785, now seen corresponding path program 1 times [2018-11-12 19:06:47,590 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:06:47,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:06:47,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:06:47,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:06:47,592 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:06:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:06:48,074 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-11-12 19:06:48,275 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 78 proven. 101 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:06:48,275 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:06:48,276 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:06:48,277 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 266 with the following transitions: [2018-11-12 19:06:48,282 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], [269], [271], [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], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:06:48,342 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:06:48,343 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:06:49,029 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:06:49,037 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:06:49,039 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Performed 1026 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1026 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:06:49,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:06:49,074 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:06:49,802 INFO L227 lantSequenceWeakener]: Weakened 256 states. On average, predicates are now at 77.76% of their original sizes. [2018-11-12 19:06:49,802 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:06:50,163 INFO L415 sIntCurrentIteration]: We unified 264 AI predicates to 264 [2018-11-12 19:06:50,164 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:06:50,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:06:50,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-12 19:06:50,165 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:06:50,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 19:06:50,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 19:06:50,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 19:06:50,168 INFO L87 Difference]: Start difference. First operand 1733 states and 2678 transitions. Second operand 7 states. [2018-11-12 19:07:06,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:07:06,229 INFO L93 Difference]: Finished difference Result 3645 states and 5642 transitions. [2018-11-12 19:07:06,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:07:06,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2018-11-12 19:07:06,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:07:06,242 INFO L225 Difference]: With dead ends: 3645 [2018-11-12 19:07:06,243 INFO L226 Difference]: Without dead ends: 1918 [2018-11-12 19:07:06,251 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 265 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:07:06,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2018-11-12 19:07:06,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1916. [2018-11-12 19:07:06,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2018-11-12 19:07:06,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2869 transitions. [2018-11-12 19:07:06,302 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2869 transitions. Word has length 265 [2018-11-12 19:07:06,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:07:06,303 INFO L480 AbstractCegarLoop]: Abstraction has 1916 states and 2869 transitions. [2018-11-12 19:07:06,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 19:07:06,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2869 transitions. [2018-11-12 19:07:06,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-11-12 19:07:06,313 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:07:06,314 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, 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, 1] [2018-11-12 19:07:06,314 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:07:06,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:07:06,315 INFO L82 PathProgramCache]: Analyzing trace with hash 211096808, now seen corresponding path program 1 times [2018-11-12 19:07:06,315 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:07:06,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:06,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:07:06,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:06,316 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:07:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:07:06,875 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:07:07,069 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-12 19:07:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 205 proven. 183 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:07:07,672 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:07:07,672 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:07:07,672 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 351 with the following transitions: [2018-11-12 19:07:07,673 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], [269], [271], [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], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:07:07,678 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:07:07,679 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:07:07,855 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:07:08,279 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:07:08,279 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Performed 2390 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2390 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:07:08,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:07:08,319 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:07:09,070 INFO L227 lantSequenceWeakener]: Weakened 159 states. On average, predicates are now at 77.5% of their original sizes. [2018-11-12 19:07:09,070 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:07:10,568 INFO L415 sIntCurrentIteration]: We unified 349 AI predicates to 349 [2018-11-12 19:07:10,569 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:07:10,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:07:10,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [12] total 32 [2018-11-12 19:07:10,569 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:07:10,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 19:07:10,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 19:07:10,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2018-11-12 19:07:10,572 INFO L87 Difference]: Start difference. First operand 1916 states and 2869 transitions. Second operand 22 states. [2018-11-12 19:07:37,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:07:37,170 INFO L93 Difference]: Finished difference Result 4614 states and 6705 transitions. [2018-11-12 19:07:37,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-12 19:07:37,170 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 350 [2018-11-12 19:07:37,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:07:37,182 INFO L225 Difference]: With dead ends: 4614 [2018-11-12 19:07:37,183 INFO L226 Difference]: Without dead ends: 2286 [2018-11-12 19:07:37,192 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 358 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2018-11-12 19:07:37,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2286 states. [2018-11-12 19:07:37,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2286 to 2284. [2018-11-12 19:07:37,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2284 states. [2018-11-12 19:07:37,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 3245 transitions. [2018-11-12 19:07:37,253 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 3245 transitions. Word has length 350 [2018-11-12 19:07:37,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:07:37,254 INFO L480 AbstractCegarLoop]: Abstraction has 2284 states and 3245 transitions. [2018-11-12 19:07:37,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 19:07:37,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 3245 transitions. [2018-11-12 19:07:37,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-11-12 19:07:37,265 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:07:37,266 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:07:37,266 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:07:37,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:07:37,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1946507268, now seen corresponding path program 1 times [2018-11-12 19:07:37,267 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:07:37,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:37,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:07:37,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:37,268 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:07:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:07:37,801 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:07:38,015 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-12 19:07:38,322 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-11-12 19:07:38,734 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-11-12 19:07:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 130 proven. 305 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:07:39,168 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:07:39,168 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:07:39,168 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 377 with the following transitions: [2018-11-12 19:07:39,169 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], [269], [271], [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], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:07:39,173 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:07:39,173 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:07:39,235 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:07:39,337 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:07:39,337 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Performed 2201 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2201 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:07:39,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:07:39,342 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:07:39,866 INFO L227 lantSequenceWeakener]: Weakened 150 states. On average, predicates are now at 78.45% of their original sizes. [2018-11-12 19:07:39,867 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:07:40,715 INFO L415 sIntCurrentIteration]: We unified 375 AI predicates to 375 [2018-11-12 19:07:40,715 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:07:40,716 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:07:40,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [15] total 34 [2018-11-12 19:07:40,716 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:07:40,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 19:07:40,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 19:07:40,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-12 19:07:40,718 INFO L87 Difference]: Start difference. First operand 2284 states and 3245 transitions. Second operand 21 states. [2018-11-12 19:07:51,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:07:51,889 INFO L93 Difference]: Finished difference Result 4384 states and 6504 transitions. [2018-11-12 19:07:51,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-12 19:07:51,890 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 376 [2018-11-12 19:07:51,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:07:51,902 INFO L225 Difference]: With dead ends: 4384 [2018-11-12 19:07:51,902 INFO L226 Difference]: Without dead ends: 2657 [2018-11-12 19:07:51,911 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 393 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=280, Invalid=1202, Unknown=0, NotChecked=0, Total=1482 [2018-11-12 19:07:51,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2018-11-12 19:07:51,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2652. [2018-11-12 19:07:51,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2652 states. [2018-11-12 19:07:51,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3641 transitions. [2018-11-12 19:07:51,980 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3641 transitions. Word has length 376 [2018-11-12 19:07:51,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:07:51,980 INFO L480 AbstractCegarLoop]: Abstraction has 2652 states and 3641 transitions. [2018-11-12 19:07:51,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-12 19:07:51,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3641 transitions. [2018-11-12 19:07:51,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-11-12 19:07:51,993 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:07:51,994 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 19:07:51,994 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:07:51,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:07:51,994 INFO L82 PathProgramCache]: Analyzing trace with hash -817176592, now seen corresponding path program 1 times [2018-11-12 19:07:51,995 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:07:51,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:51,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:07:51,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:51,996 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:07:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:07:52,486 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:07:52,677 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-12 19:07:52,901 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:07:53,412 WARN L179 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-12 19:07:54,033 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 233 proven. 204 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:07:54,034 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:07:54,034 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:07:54,034 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 387 with the following transitions: [2018-11-12 19:07:54,034 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], [269], [271], [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], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [698], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:07:54,038 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:07:54,038 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:07:54,117 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:07:54,295 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:07:54,295 INFO L272 AbstractInterpreter]: Visited 130 different actions 253 times. Merged at 4 different actions 4 times. Never widened. Performed 3302 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3302 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:07:54,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:07:54,300 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:07:54,900 INFO L227 lantSequenceWeakener]: Weakened 97 states. On average, predicates are now at 77.65% of their original sizes. [2018-11-12 19:07:54,900 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:07:55,573 INFO L415 sIntCurrentIteration]: We unified 385 AI predicates to 385 [2018-11-12 19:07:55,573 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:07:55,574 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:07:55,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [12] total 27 [2018-11-12 19:07:55,574 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:07:55,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 19:07:55,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 19:07:55,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2018-11-12 19:07:55,576 INFO L87 Difference]: Start difference. First operand 2652 states and 3641 transitions. Second operand 17 states. [2018-11-12 19:08:12,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:08:12,677 INFO L93 Difference]: Finished difference Result 5170 states and 7288 transitions. [2018-11-12 19:08:12,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-12 19:08:12,678 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 386 [2018-11-12 19:08:12,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:08:12,689 INFO L225 Difference]: With dead ends: 5170 [2018-11-12 19:08:12,689 INFO L226 Difference]: Without dead ends: 2842 [2018-11-12 19:08:12,697 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 392 GetRequests, 364 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2018-11-12 19:08:12,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-11-12 19:08:12,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 2654. [2018-11-12 19:08:12,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2654 states. [2018-11-12 19:08:12,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 3642 transitions. [2018-11-12 19:08:12,763 INFO L78 Accepts]: Start accepts. Automaton has 2654 states and 3642 transitions. Word has length 386 [2018-11-12 19:08:12,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:08:12,764 INFO L480 AbstractCegarLoop]: Abstraction has 2654 states and 3642 transitions. [2018-11-12 19:08:12,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 19:08:12,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2654 states and 3642 transitions. [2018-11-12 19:08:12,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-11-12 19:08:12,776 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:08:12,777 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 19:08:12,777 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:08:12,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:08:12,777 INFO L82 PathProgramCache]: Analyzing trace with hash -558652053, now seen corresponding path program 1 times [2018-11-12 19:08:12,778 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:08:12,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:08:12,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:08:12,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:08:12,779 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:08:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:08:13,305 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:08:13,891 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 217 proven. 220 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:08:13,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:08:13,891 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:08:13,892 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 412 with the following transitions: [2018-11-12 19:08:13,892 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], [269], [271], [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], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [798], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:08:13,895 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:08:13,895 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:08:13,967 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:08:14,181 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:08:14,181 INFO L272 AbstractInterpreter]: Visited 155 different actions 303 times. Merged at 4 different actions 4 times. Never widened. Performed 3185 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3185 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:08:14,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:08:14,219 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:08:14,745 INFO L227 lantSequenceWeakener]: Weakened 101 states. On average, predicates are now at 77.63% of their original sizes. [2018-11-12 19:08:14,746 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:08:15,135 INFO L415 sIntCurrentIteration]: We unified 410 AI predicates to 410 [2018-11-12 19:08:15,135 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:08:15,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:08:15,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [13] total 30 [2018-11-12 19:08:15,138 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:08:15,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 19:08:15,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 19:08:15,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2018-11-12 19:08:15,139 INFO L87 Difference]: Start difference. First operand 2654 states and 3642 transitions. Second operand 19 states. [2018-11-12 19:08:37,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:08:37,092 INFO L93 Difference]: Finished difference Result 5170 states and 7288 transitions. [2018-11-12 19:08:37,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-12 19:08:37,092 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 411 [2018-11-12 19:08:37,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:08:37,104 INFO L225 Difference]: With dead ends: 5170 [2018-11-12 19:08:37,104 INFO L226 Difference]: Without dead ends: 2842 [2018-11-12 19:08:37,113 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 419 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2018-11-12 19:08:37,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-11-12 19:08:37,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 2654. [2018-11-12 19:08:37,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2654 states. [2018-11-12 19:08:37,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 3642 transitions. [2018-11-12 19:08:37,179 INFO L78 Accepts]: Start accepts. Automaton has 2654 states and 3642 transitions. Word has length 411 [2018-11-12 19:08:37,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:08:37,180 INFO L480 AbstractCegarLoop]: Abstraction has 2654 states and 3642 transitions. [2018-11-12 19:08:37,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 19:08:37,180 INFO L276 IsEmpty]: Start isEmpty. Operand 2654 states and 3642 transitions. [2018-11-12 19:08:37,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-11-12 19:08:37,198 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:08:37,199 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 19:08:37,199 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:08:37,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:08:37,200 INFO L82 PathProgramCache]: Analyzing trace with hash 969826652, now seen corresponding path program 1 times [2018-11-12 19:08:37,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:08:37,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:08:37,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:08:37,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:08:37,201 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:08:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:08:37,683 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:08:38,659 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 204 proven. 233 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:08:38,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:08:38,659 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:08:38,659 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 425 with the following transitions: [2018-11-12 19:08:38,660 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], [269], [271], [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], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [850], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:08:38,663 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:08:38,663 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:08:38,731 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:08:38,925 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:08:38,925 INFO L272 AbstractInterpreter]: Visited 168 different actions 329 times. Merged at 4 different actions 4 times. Never widened. Performed 4491 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4491 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:08:38,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:08:38,931 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:08:39,504 INFO L227 lantSequenceWeakener]: Weakened 97 states. On average, predicates are now at 77.65% of their original sizes. [2018-11-12 19:08:39,505 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:08:40,142 INFO L415 sIntCurrentIteration]: We unified 423 AI predicates to 423 [2018-11-12 19:08:40,143 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:08:40,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:08:40,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-11-12 19:08:40,143 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:08:40,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 19:08:40,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 19:08:40,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:08:40,144 INFO L87 Difference]: Start difference. First operand 2654 states and 3642 transitions. Second operand 18 states. [2018-11-12 19:09:01,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:09:01,805 INFO L93 Difference]: Finished difference Result 5170 states and 7288 transitions. [2018-11-12 19:09:01,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-12 19:09:01,805 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 424 [2018-11-12 19:09:01,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:09:01,815 INFO L225 Difference]: With dead ends: 5170 [2018-11-12 19:09:01,816 INFO L226 Difference]: Without dead ends: 2842 [2018-11-12 19:09:01,824 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 431 GetRequests, 401 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2018-11-12 19:09:01,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-11-12 19:09:01,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 2654. [2018-11-12 19:09:01,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2654 states. [2018-11-12 19:09:01,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 3642 transitions. [2018-11-12 19:09:01,878 INFO L78 Accepts]: Start accepts. Automaton has 2654 states and 3642 transitions. Word has length 424 [2018-11-12 19:09:01,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:09:01,879 INFO L480 AbstractCegarLoop]: Abstraction has 2654 states and 3642 transitions. [2018-11-12 19:09:01,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 19:09:01,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2654 states and 3642 transitions. [2018-11-12 19:09:01,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-11-12 19:09:01,888 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:09:01,889 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 19:09:01,889 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:09:01,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:01,889 INFO L82 PathProgramCache]: Analyzing trace with hash 105185204, now seen corresponding path program 1 times [2018-11-12 19:09:01,890 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:09:01,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:01,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:09:01,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:01,891 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:09:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:09:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 192 proven. 245 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:09:02,866 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:09:02,866 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:09:02,866 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 437 with the following transitions: [2018-11-12 19:09:02,866 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], [269], [271], [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], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [898], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:09:02,869 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:09:02,869 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:09:02,921 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:09:03,592 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:09:03,593 INFO L272 AbstractInterpreter]: Visited 180 different actions 353 times. Merged at 4 different actions 4 times. Never widened. Performed 5051 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5051 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:09:03,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:03,599 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:09:04,214 INFO L227 lantSequenceWeakener]: Weakened 97 states. On average, predicates are now at 77.65% of their original sizes. [2018-11-12 19:09:04,214 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:09:04,826 INFO L415 sIntCurrentIteration]: We unified 435 AI predicates to 435 [2018-11-12 19:09:04,826 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:09:04,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:09:04,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [14] total 30 [2018-11-12 19:09:04,827 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:09:04,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 19:09:04,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 19:09:04,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:09:04,828 INFO L87 Difference]: Start difference. First operand 2654 states and 3642 transitions. Second operand 18 states. [2018-11-12 19:09:28,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:09:28,654 INFO L93 Difference]: Finished difference Result 5168 states and 7286 transitions. [2018-11-12 19:09:28,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-12 19:09:28,654 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 436 [2018-11-12 19:09:28,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:09:28,663 INFO L225 Difference]: With dead ends: 5168 [2018-11-12 19:09:28,663 INFO L226 Difference]: Without dead ends: 2840 [2018-11-12 19:09:28,671 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 443 GetRequests, 413 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2018-11-12 19:09:28,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2018-11-12 19:09:28,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 2652. [2018-11-12 19:09:28,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2652 states. [2018-11-12 19:09:28,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3640 transitions. [2018-11-12 19:09:28,727 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3640 transitions. Word has length 436 [2018-11-12 19:09:28,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:09:28,727 INFO L480 AbstractCegarLoop]: Abstraction has 2652 states and 3640 transitions. [2018-11-12 19:09:28,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 19:09:28,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3640 transitions. [2018-11-12 19:09:28,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2018-11-12 19:09:28,737 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:09:28,738 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, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:09:28,738 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:09:28,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:28,739 INFO L82 PathProgramCache]: Analyzing trace with hash -744542557, now seen corresponding path program 1 times [2018-11-12 19:09:28,739 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:09:28,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:28,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:09:28,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:28,740 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:09:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:09:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 249 proven. 166 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2018-11-12 19:09:29,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:09:29,064 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:09:29,065 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 462 with the following transitions: [2018-11-12 19:09:29,065 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], [269], [271], [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], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:09:29,066 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:09:29,067 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:09:29,132 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:09:29,382 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:09:29,382 INFO L272 AbstractInterpreter]: Visited 123 different actions 367 times. Merged at 7 different actions 20 times. Never widened. Performed 5109 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5109 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 19:09:29,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:29,389 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:09:30,484 INFO L227 lantSequenceWeakener]: Weakened 159 states. On average, predicates are now at 77.5% of their original sizes. [2018-11-12 19:09:30,485 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:09:31,035 INFO L415 sIntCurrentIteration]: We unified 460 AI predicates to 460 [2018-11-12 19:09:31,035 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:09:31,035 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:09:31,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-12 19:09:31,036 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:09:31,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 19:09:31,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 19:09:31,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2018-11-12 19:09:31,039 INFO L87 Difference]: Start difference. First operand 2652 states and 3640 transitions. Second operand 23 states. [2018-11-12 19:09:56,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:09:56,026 INFO L93 Difference]: Finished difference Result 5361 states and 7477 transitions. [2018-11-12 19:09:56,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-12 19:09:56,027 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 461 [2018-11-12 19:09:56,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:09:56,035 INFO L225 Difference]: With dead ends: 5361 [2018-11-12 19:09:56,036 INFO L226 Difference]: Without dead ends: 3033 [2018-11-12 19:09:56,042 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 477 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=305, Invalid=1255, Unknown=0, NotChecked=0, Total=1560 [2018-11-12 19:09:56,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3033 states. [2018-11-12 19:09:56,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3033 to 2842. [2018-11-12 19:09:56,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2842 states. [2018-11-12 19:09:56,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 3828 transitions. [2018-11-12 19:09:56,098 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 3828 transitions. Word has length 461 [2018-11-12 19:09:56,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:09:56,098 INFO L480 AbstractCegarLoop]: Abstraction has 2842 states and 3828 transitions. [2018-11-12 19:09:56,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 19:09:56,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 3828 transitions. [2018-11-12 19:09:56,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-11-12 19:09:56,108 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:09:56,109 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, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:09:56,109 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:09:56,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:56,110 INFO L82 PathProgramCache]: Analyzing trace with hash -2024595012, now seen corresponding path program 1 times [2018-11-12 19:09:56,110 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:09:56,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:56,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:09:56,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:56,111 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:09:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:09:57,095 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 267 proven. 471 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:09:57,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:09:57,095 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:09:57,095 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 465 with the following transitions: [2018-11-12 19:09:57,096 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], [269], [271], [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], [539], [543], [547], [551], [555], [559], [563], [566], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:09:57,097 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:09:57,097 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:09:57,149 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:09:57,347 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:09:57,347 INFO L272 AbstractInterpreter]: Visited 123 different actions 361 times. Merged at 7 different actions 14 times. Never widened. Performed 4172 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4172 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 19:09:57,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:57,353 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:09:58,404 INFO L227 lantSequenceWeakener]: Weakened 128 states. On average, predicates are now at 77.56% of their original sizes. [2018-11-12 19:09:58,404 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:09:58,724 INFO L415 sIntCurrentIteration]: We unified 463 AI predicates to 463 [2018-11-12 19:09:58,724 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:09:58,725 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:09:58,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [15] total 30 [2018-11-12 19:09:58,725 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:09:58,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 19:09:58,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 19:09:58,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2018-11-12 19:09:58,727 INFO L87 Difference]: Start difference. First operand 2842 states and 3828 transitions. Second operand 17 states. Received shutdown request... [2018-11-12 19:10:21,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-12 19:10:21,239 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:10:21,244 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:10:21,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:10:21 BoogieIcfgContainer [2018-11-12 19:10:21,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:10:21,245 INFO L168 Benchmark]: Toolchain (without parser) took 227304.01 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 895.1 MB. Max. memory is 7.1 GB. [2018-11-12 19:10:21,246 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:10:21,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 790.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-12 19:10:21,248 INFO L168 Benchmark]: Boogie Procedure Inliner took 146.47 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -806.2 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. [2018-11-12 19:10:21,248 INFO L168 Benchmark]: Boogie Preprocessor took 128.12 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:10:21,249 INFO L168 Benchmark]: RCFGBuilder took 3612.84 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 117.8 MB). Peak memory consumption was 117.8 MB. Max. memory is 7.1 GB. [2018-11-12 19:10:21,250 INFO L168 Benchmark]: TraceAbstraction took 222620.93 ms. Allocated memory was 2.2 GB in the beginning and 4.5 GB in the end (delta: 2.3 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 820.3 MB. Max. memory is 7.1 GB. [2018-11-12 19:10:21,255 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 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 790.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 146.47 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -806.2 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.12 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3612.84 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 117.8 MB). Peak memory consumption was 117.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222620.93 ms. Allocated memory was 2.2 GB in the beginning and 4.5 GB in the end (delta: 2.3 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 820.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 121). Cancelled while BasicCegarLoop was constructing difference of abstraction (2842states) and FLOYD_HOARE automaton (currently 29 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (4536 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 222.5s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 193.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2486 SDtfs, 25064 SDslu, 2158 SDs, 0 SdLazy, 30050 SolverSat, 2915 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 62.4s Time, PredicateUnifierStatistics: 18 DeclaredPredicates, 3675 GetRequests, 3409 SyntacticMatches, 21 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1676 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2842occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.7s AbstIntTime, 9 AbstIntIterations, 9 AbstIntStrong, 0.9974423031790187 AbsIntWeakeningRatio, 0.08249158249158249 AbsIntAvgWeakeningVarsNumRemoved, 11.562570145903479 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 961 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 3894 NumberOfCodeBlocks, 3894 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 3882 ConstructedInterpolants, 0 QuantifiedInterpolants, 14447628 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 2212/4340 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown