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/Problem16_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:52:10,895 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:52:10,897 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:52:10,911 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:52:10,912 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:52:10,913 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:52:10,914 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:52:10,916 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:52:10,918 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:52:10,922 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:52:10,923 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:52:10,923 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:52:10,927 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:52:10,929 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:52:10,930 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:52:10,931 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:52:10,932 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:52:10,935 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:52:10,940 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:52:10,943 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:52:10,944 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:52:10,945 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:52:10,949 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:52:10,950 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:52:10,950 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:52:10,953 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:52:10,955 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:52:10,955 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:52:10,957 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:52:10,959 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:52:10,959 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:52:10,960 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:52:10,960 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:52:10,961 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:52:10,963 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:52:10,964 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:52:10,965 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 [2018-11-07 20:52:10,983 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:52:10,984 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:52:10,985 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:52:10,985 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:52:10,985 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:52:10,985 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:52:10,985 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:52:10,986 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:52:10,986 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:52:10,986 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:52:10,986 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:52:10,986 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:52:10,987 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:52:10,987 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:52:10,988 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:52:10,988 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:52:10,988 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:52:10,988 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:52:10,988 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:52:10,989 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:52:10,989 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:52:10,989 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:52:10,989 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:52:10,989 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:52:10,990 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:52:10,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:52:10,990 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:52:10,990 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:52:10,991 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:52:10,991 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:52:10,991 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:52:10,991 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:52:10,991 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:52:10,991 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:52:10,992 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:52:11,062 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:52:11,078 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:52:11,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:52:11,084 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:52:11,085 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:52:11,085 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label24_true-unreach-call.c [2018-11-07 20:52:11,143 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22a34ef44/dd26854355cf49698c4c346e0f11e09b/FLAG7c5cf56ae [2018-11-07 20:52:11,844 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:52:11,846 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label24_true-unreach-call.c [2018-11-07 20:52:11,866 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22a34ef44/dd26854355cf49698c4c346e0f11e09b/FLAG7c5cf56ae [2018-11-07 20:52:11,883 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22a34ef44/dd26854355cf49698c4c346e0f11e09b [2018-11-07 20:52:11,895 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:52:11,896 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:52:11,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:52:11,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:52:11,901 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:52:11,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:52:11" (1/1) ... [2018-11-07 20:52:11,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54967387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:11, skipping insertion in model container [2018-11-07 20:52:11,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:52:11" (1/1) ... [2018-11-07 20:52:11,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:52:12,009 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:52:12,788 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:52:12,794 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:52:13,050 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:52:13,072 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:52:13,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:13 WrapperNode [2018-11-07 20:52:13,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:52:13,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:52:13,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:52:13,074 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:52:13,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:13" (1/1) ... [2018-11-07 20:52:13,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:13" (1/1) ... [2018-11-07 20:52:13,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:52:13,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:52:13,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:52:13,288 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:52:13,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:13" (1/1) ... [2018-11-07 20:52:13,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:13" (1/1) ... [2018-11-07 20:52:13,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:13" (1/1) ... [2018-11-07 20:52:13,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:13" (1/1) ... [2018-11-07 20:52:13,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:13" (1/1) ... [2018-11-07 20:52:13,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:13" (1/1) ... [2018-11-07 20:52:13,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:13" (1/1) ... [2018-11-07 20:52:13,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:52:13,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:52:13,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:52:13,434 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:52:13,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:52:13,497 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:52:13,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:52:13,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:52:13,497 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:52:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:52:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:52:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:52:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:52:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:52:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:52:13,499 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:52:19,235 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:52:19,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:52:19 BoogieIcfgContainer [2018-11-07 20:52:19,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:52:19,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:52:19,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:52:19,243 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:52:19,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:52:11" (1/3) ... [2018-11-07 20:52:19,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b937390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:52:19, skipping insertion in model container [2018-11-07 20:52:19,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:13" (2/3) ... [2018-11-07 20:52:19,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b937390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:52:19, skipping insertion in model container [2018-11-07 20:52:19,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:52:19" (3/3) ... [2018-11-07 20:52:19,246 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label24_true-unreach-call.c [2018-11-07 20:52:19,257 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:52:19,266 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:52:19,282 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:52:19,324 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:52:19,325 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:52:19,325 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:52:19,325 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:52:19,325 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:52:19,325 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:52:19,325 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:52:19,326 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:52:19,358 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 20:52:19,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-07 20:52:19,373 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:52:19,375 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:52:19,379 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:52:19,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:52:19,385 INFO L82 PathProgramCache]: Analyzing trace with hash -2128863117, now seen corresponding path program 1 times [2018-11-07 20:52:19,387 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:52:19,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:19,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:52:19,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:19,434 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:52:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:52:19,841 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:52:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:52:19,957 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:52:19,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:52:19,957 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:52:19,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:52:19,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:52:19,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:52:19,990 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 20:52:23,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:52:23,414 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 20:52:23,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:52:23,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-11-07 20:52:23,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:52:23,448 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 20:52:23,448 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 20:52:23,459 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:52:23,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 20:52:23,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 20:52:23,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 20:52:23,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-11-07 20:52:23,639 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 59 [2018-11-07 20:52:23,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:52:23,640 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-11-07 20:52:23,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:52:23,641 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-11-07 20:52:23,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-11-07 20:52:23,657 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:52:23,657 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:52:23,658 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:52:23,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:52:23,659 INFO L82 PathProgramCache]: Analyzing trace with hash -2051770448, now seen corresponding path program 1 times [2018-11-07 20:52:23,659 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:52:23,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:23,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:52:23,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:23,663 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:52:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:52:24,144 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:52:24,145 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:52:24,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:52:24,145 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:52:24,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:52:24,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:52:24,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:52:24,148 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-11-07 20:52:32,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:52:32,064 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-11-07 20:52:32,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:52:32,065 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2018-11-07 20:52:32,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:52:32,077 INFO L225 Difference]: With dead ends: 2183 [2018-11-07 20:52:32,078 INFO L226 Difference]: Without dead ends: 1445 [2018-11-07 20:52:32,083 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:52:32,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-11-07 20:52:32,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-11-07 20:52:32,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-11-07 20:52:32,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-11-07 20:52:32,134 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 167 [2018-11-07 20:52:32,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:52:32,134 INFO L480 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-11-07 20:52:32,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:52:32,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-11-07 20:52:32,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-11-07 20:52:32,138 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:52:32,139 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:52:32,139 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:52:32,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:52:32,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1876159715, now seen corresponding path program 1 times [2018-11-07 20:52:32,140 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:52:32,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:32,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:52:32,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:32,141 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:52:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:52:32,405 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:52:32,405 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:52:32,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:52:32,406 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:52:32,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:52:32,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:52:32,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:52:32,407 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-11-07 20:52:37,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:52:37,911 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-11-07 20:52:37,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:52:37,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2018-11-07 20:52:37,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:52:37,927 INFO L225 Difference]: With dead ends: 3902 [2018-11-07 20:52:37,927 INFO L226 Difference]: Without dead ends: 2484 [2018-11-07 20:52:37,932 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:52:37,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-11-07 20:52:37,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-11-07 20:52:37,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-11-07 20:52:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-11-07 20:52:38,009 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 170 [2018-11-07 20:52:38,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:52:38,009 INFO L480 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-11-07 20:52:38,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:52:38,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-11-07 20:52:38,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-11-07 20:52:38,015 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:52:38,016 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:52:38,016 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:52:38,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:52:38,016 INFO L82 PathProgramCache]: Analyzing trace with hash -170942544, now seen corresponding path program 1 times [2018-11-07 20:52:38,017 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:52:38,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:38,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:52:38,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:38,018 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:52:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:52:38,386 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:52:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 104 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:52:38,660 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:52:38,660 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:52:38,661 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 287 with the following transitions: [2018-11-07 20:52:38,664 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [551], [553], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:52:38,720 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:52:38,721 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:52:39,531 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:52:39,533 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 20:52:39,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:52:39,569 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:52:40,605 INFO L227 lantSequenceWeakener]: Weakened 264 states. On average, predicates are now at 78.07% of their original sizes. [2018-11-07 20:52:40,605 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:52:42,802 INFO L415 sIntCurrentIteration]: We unified 285 AI predicates to 285 [2018-11-07 20:52:42,802 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:52:42,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:52:42,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 20:52:42,803 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:52:42,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:52:42,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:52:42,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:52:42,805 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 10 states. [2018-11-07 20:52:47,590 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:53:09,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:53:09,713 INFO L93 Difference]: Finished difference Result 5285 states and 7974 transitions. [2018-11-07 20:53:09,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 20:53:09,713 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 286 [2018-11-07 20:53:09,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:53:09,729 INFO L225 Difference]: With dead ends: 5285 [2018-11-07 20:53:09,730 INFO L226 Difference]: Without dead ends: 2817 [2018-11-07 20:53:09,739 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 289 GetRequests, 234 SyntacticMatches, 43 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-07 20:53:09,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2018-11-07 20:53:09,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2812. [2018-11-07 20:53:09,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2018-11-07 20:53:09,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4089 transitions. [2018-11-07 20:53:09,813 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4089 transitions. Word has length 286 [2018-11-07 20:53:09,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:53:09,814 INFO L480 AbstractCegarLoop]: Abstraction has 2812 states and 4089 transitions. [2018-11-07 20:53:09,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 20:53:09,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4089 transitions. [2018-11-07 20:53:09,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-11-07 20:53:09,822 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:53:09,823 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:53:09,823 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:53:09,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:53:09,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1637733261, now seen corresponding path program 1 times [2018-11-07 20:53:09,824 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:53:09,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:53:09,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:53:09,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:53:09,826 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:53:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:53:10,151 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 251 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-07 20:53:10,151 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:53:10,152 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:53:10,152 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 379 with the following transitions: [2018-11-07 20:53:10,153 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [551], [553], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:53:10,160 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:53:10,160 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:53:10,288 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:53:10,684 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:53:10,684 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:53:10,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:53:10,698 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:53:11,443 INFO L227 lantSequenceWeakener]: Weakened 134 states. On average, predicates are now at 78.32% of their original sizes. [2018-11-07 20:53:11,443 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:53:13,410 INFO L415 sIntCurrentIteration]: We unified 377 AI predicates to 377 [2018-11-07 20:53:13,410 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:53:13,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:53:13,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-07 20:53:13,411 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:53:13,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 20:53:13,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 20:53:13,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:53:13,413 INFO L87 Difference]: Start difference. First operand 2812 states and 4089 transitions. Second operand 19 states. [2018-11-07 20:53:36,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:53:36,897 INFO L93 Difference]: Finished difference Result 6454 states and 9413 transitions. [2018-11-07 20:53:36,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 20:53:36,898 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 378 [2018-11-07 20:53:36,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:53:36,916 INFO L225 Difference]: With dead ends: 6454 [2018-11-07 20:53:36,917 INFO L226 Difference]: Without dead ends: 3986 [2018-11-07 20:53:36,926 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 387 GetRequests, 342 SyntacticMatches, 18 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2018-11-07 20:53:36,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2018-11-07 20:53:37,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 3756. [2018-11-07 20:53:37,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3756 states. [2018-11-07 20:53:37,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3756 states to 3756 states and 5082 transitions. [2018-11-07 20:53:37,025 INFO L78 Accepts]: Start accepts. Automaton has 3756 states and 5082 transitions. Word has length 378 [2018-11-07 20:53:37,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:53:37,026 INFO L480 AbstractCegarLoop]: Abstraction has 3756 states and 5082 transitions. [2018-11-07 20:53:37,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 20:53:37,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3756 states and 5082 transitions. [2018-11-07 20:53:37,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-11-07 20:53:37,036 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:53:37,036 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:53:37,037 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:53:37,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:53:37,037 INFO L82 PathProgramCache]: Analyzing trace with hash 314587883, now seen corresponding path program 1 times [2018-11-07 20:53:37,037 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:53:37,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:53:37,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:53:37,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:53:37,039 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:53:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:53:38,145 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 275 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 20:53:38,145 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:53:38,145 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:53:38,146 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 415 with the following transitions: [2018-11-07 20:53:38,146 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [551], [553], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:53:38,151 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:53:38,151 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:53:38,273 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:53:38,630 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:53:38,631 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:53:38,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:53:38,669 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:53:39,244 INFO L227 lantSequenceWeakener]: Weakened 134 states. On average, predicates are now at 78.32% of their original sizes. [2018-11-07 20:53:39,244 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:53:39,778 INFO L415 sIntCurrentIteration]: We unified 413 AI predicates to 413 [2018-11-07 20:53:39,778 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:53:39,778 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:53:39,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [13] total 30 [2018-11-07 20:53:39,779 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:53:39,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 20:53:39,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 20:53:39,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:53:39,780 INFO L87 Difference]: Start difference. First operand 3756 states and 5082 transitions. Second operand 19 states. [2018-11-07 20:54:11,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:54:11,993 INFO L93 Difference]: Finished difference Result 7459 states and 10494 transitions. [2018-11-07 20:54:11,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 20:54:11,994 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 414 [2018-11-07 20:54:11,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:54:12,014 INFO L225 Difference]: With dead ends: 7459 [2018-11-07 20:54:12,014 INFO L226 Difference]: Without dead ends: 4647 [2018-11-07 20:54:12,026 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 422 GetRequests, 393 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2018-11-07 20:54:12,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4647 states. [2018-11-07 20:54:12,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4647 to 4415. [2018-11-07 20:54:12,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4415 states. [2018-11-07 20:54:12,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4415 states to 4415 states and 5781 transitions. [2018-11-07 20:54:12,143 INFO L78 Accepts]: Start accepts. Automaton has 4415 states and 5781 transitions. Word has length 414 [2018-11-07 20:54:12,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:54:12,143 INFO L480 AbstractCegarLoop]: Abstraction has 4415 states and 5781 transitions. [2018-11-07 20:54:12,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 20:54:12,144 INFO L276 IsEmpty]: Start isEmpty. Operand 4415 states and 5781 transitions. [2018-11-07 20:54:12,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2018-11-07 20:54:12,162 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:54:12,163 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:54:12,163 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:54:12,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:54:12,164 INFO L82 PathProgramCache]: Analyzing trace with hash -114594037, now seen corresponding path program 1 times [2018-11-07 20:54:12,164 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:54:12,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:54:12,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:54:12,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:54:12,165 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:54:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:54:12,781 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-07 20:54:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 266 proven. 123 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-07 20:54:13,326 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:54:13,326 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:54:13,326 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 527 with the following transitions: [2018-11-07 20:54:13,327 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [551], [553], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:54:13,335 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:54:13,335 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:54:13,737 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:54:13,737 INFO L272 AbstractInterpreter]: Visited 249 different actions 494 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:54:13,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:54:13,742 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:54:14,240 INFO L227 lantSequenceWeakener]: Weakened 296 states. On average, predicates are now at 78.11% of their original sizes. [2018-11-07 20:54:14,240 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:54:16,537 INFO L415 sIntCurrentIteration]: We unified 525 AI predicates to 525 [2018-11-07 20:54:16,537 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:54:16,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:54:16,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [8] total 24 [2018-11-07 20:54:16,538 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:54:16,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 20:54:16,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 20:54:16,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-11-07 20:54:16,541 INFO L87 Difference]: Start difference. First operand 4415 states and 5781 transitions. Second operand 18 states. [2018-11-07 20:54:18,474 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:54:30,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:54:30,370 INFO L93 Difference]: Finished difference Result 8208 states and 11190 transitions. [2018-11-07 20:54:30,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 20:54:30,370 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 526 [2018-11-07 20:54:30,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:54:30,393 INFO L225 Difference]: With dead ends: 8208 [2018-11-07 20:54:30,393 INFO L226 Difference]: Without dead ends: 5051 [2018-11-07 20:54:30,405 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 541 GetRequests, 422 SyntacticMatches, 87 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2018-11-07 20:54:30,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5051 states. [2018-11-07 20:54:30,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5051 to 5046. [2018-11-07 20:54:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5046 states. [2018-11-07 20:54:30,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5046 states to 5046 states and 6446 transitions. [2018-11-07 20:54:30,539 INFO L78 Accepts]: Start accepts. Automaton has 5046 states and 6446 transitions. Word has length 526 [2018-11-07 20:54:30,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:54:30,540 INFO L480 AbstractCegarLoop]: Abstraction has 5046 states and 6446 transitions. [2018-11-07 20:54:30,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 20:54:30,540 INFO L276 IsEmpty]: Start isEmpty. Operand 5046 states and 6446 transitions. [2018-11-07 20:54:30,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2018-11-07 20:54:30,560 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:54:30,561 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:54:30,561 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:54:30,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:54:30,562 INFO L82 PathProgramCache]: Analyzing trace with hash -283402117, now seen corresponding path program 1 times [2018-11-07 20:54:30,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:54:30,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:54:30,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:54:30,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:54:30,563 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:54:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:54:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 162 proven. 260 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 20:54:33,763 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:54:33,763 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:54:33,764 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 535 with the following transitions: [2018-11-07 20:54:33,764 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [551], [553], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:54:33,769 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:54:33,769 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:54:36,131 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:54:36,131 INFO L272 AbstractInterpreter]: Visited 257 different actions 2516 times. Merged at 5 different actions 45 times. Widened at 1 different actions 5 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:54:36,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:54:36,139 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:54:36,764 INFO L227 lantSequenceWeakener]: Weakened 80 states. On average, predicates are now at 80.06% of their original sizes. [2018-11-07 20:54:36,764 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:54:37,385 INFO L415 sIntCurrentIteration]: We unified 533 AI predicates to 533 [2018-11-07 20:54:37,385 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:54:37,385 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:54:37,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-07 20:54:37,386 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:54:37,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 20:54:37,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 20:54:37,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2018-11-07 20:54:37,387 INFO L87 Difference]: Start difference. First operand 5046 states and 6446 transitions. Second operand 22 states. [2018-11-07 20:54:39,542 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:54:53,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:54:53,737 INFO L93 Difference]: Finished difference Result 8844 states and 11869 transitions. [2018-11-07 20:54:53,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-07 20:54:53,737 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 534 [2018-11-07 20:54:53,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:54:53,759 INFO L225 Difference]: With dead ends: 8844 [2018-11-07 20:54:53,759 INFO L226 Difference]: Without dead ends: 5687 [2018-11-07 20:54:53,768 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 544 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2018-11-07 20:54:53,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5687 states. [2018-11-07 20:54:53,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5687 to 5679. [2018-11-07 20:54:53,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5679 states. [2018-11-07 20:54:53,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5679 states to 5679 states and 7120 transitions. [2018-11-07 20:54:53,905 INFO L78 Accepts]: Start accepts. Automaton has 5679 states and 7120 transitions. Word has length 534 [2018-11-07 20:54:53,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:54:53,906 INFO L480 AbstractCegarLoop]: Abstraction has 5679 states and 7120 transitions. [2018-11-07 20:54:53,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-07 20:54:53,906 INFO L276 IsEmpty]: Start isEmpty. Operand 5679 states and 7120 transitions. [2018-11-07 20:54:53,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2018-11-07 20:54:53,931 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:54:53,931 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:54:53,931 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:54:53,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:54:53,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1428128206, now seen corresponding path program 1 times [2018-11-07 20:54:53,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:54:53,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:54:53,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:54:53,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:54:53,933 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:54:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:54:54,833 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 20:54:55,298 WARN L179 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 20:54:56,382 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 308 proven. 223 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-11-07 20:54:56,382 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:54:56,382 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:54:56,382 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 619 with the following transitions: [2018-11-07 20:54:56,383 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [551], [553], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:54:56,387 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:54:56,387 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:54:56,466 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:54:57,617 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:54:57,617 INFO L272 AbstractInterpreter]: Visited 251 different actions 996 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 20:54:57,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:54:57,624 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:54:57,624 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:54:57,624 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:54:57,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:54:57,634 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:54:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:54:57,826 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:54:58,329 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 603 proven. 2 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2018-11-07 20:54:58,330 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:54:59,887 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 308 proven. 223 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-11-07 20:54:59,911 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:54:59,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2018-11-07 20:54:59,911 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:54:59,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 20:54:59,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 20:54:59,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:54:59,914 INFO L87 Difference]: Start difference. First operand 5679 states and 7120 transitions. Second operand 16 states. [2018-11-07 20:55:00,393 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2018-11-07 20:55:15,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:55:15,136 INFO L93 Difference]: Finished difference Result 12501 states and 16759 transitions. [2018-11-07 20:55:15,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-07 20:55:15,137 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 618 [2018-11-07 20:55:15,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:55:15,160 INFO L225 Difference]: With dead ends: 12501 [2018-11-07 20:55:15,161 INFO L226 Difference]: Without dead ends: 5126 [2018-11-07 20:55:15,242 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1339 GetRequests, 1273 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1391 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=955, Invalid=3601, Unknown=0, NotChecked=0, Total=4556 [2018-11-07 20:55:15,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5126 states. [2018-11-07 20:55:15,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5126 to 5031. [2018-11-07 20:55:15,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5031 states. [2018-11-07 20:55:15,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5031 states to 5031 states and 5533 transitions. [2018-11-07 20:55:15,381 INFO L78 Accepts]: Start accepts. Automaton has 5031 states and 5533 transitions. Word has length 618 [2018-11-07 20:55:15,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:55:15,382 INFO L480 AbstractCegarLoop]: Abstraction has 5031 states and 5533 transitions. [2018-11-07 20:55:15,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 20:55:15,382 INFO L276 IsEmpty]: Start isEmpty. Operand 5031 states and 5533 transitions. [2018-11-07 20:55:15,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2018-11-07 20:55:15,393 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:55:15,394 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:55:15,394 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:55:15,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:55:15,395 INFO L82 PathProgramCache]: Analyzing trace with hash 551284815, now seen corresponding path program 1 times [2018-11-07 20:55:15,395 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:55:15,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:55:15,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:55:15,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:55:15,396 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:55:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:55:15,912 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:55:16,737 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 220 proven. 389 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-11-07 20:55:16,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:55:16,737 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:55:16,738 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 636 with the following transitions: [2018-11-07 20:55:16,738 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [551], [553], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:55:16,745 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:55:16,745 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:55:16,864 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:55:20,020 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:55:20,020 INFO L272 AbstractInterpreter]: Visited 258 different actions 2546 times. Merged at 7 different actions 65 times. Widened at 1 different actions 5 times. Found 10 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 20:55:20,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:55:20,031 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:55:21,183 INFO L227 lantSequenceWeakener]: Weakened 87 states. On average, predicates are now at 77.69% of their original sizes. [2018-11-07 20:55:21,183 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:55:21,527 INFO L415 sIntCurrentIteration]: We unified 634 AI predicates to 634 [2018-11-07 20:55:21,528 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:55:21,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:55:21,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-11-07 20:55:21,528 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:55:21,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 20:55:21,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 20:55:21,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-11-07 20:55:21,530 INFO L87 Difference]: Start difference. First operand 5031 states and 5533 transitions. Second operand 16 states. [2018-11-07 20:55:43,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:55:43,192 INFO L93 Difference]: Finished difference Result 9784 states and 10908 transitions. [2018-11-07 20:55:43,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 20:55:43,192 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 635 [2018-11-07 20:55:43,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:55:43,207 INFO L225 Difference]: With dead ends: 9784 [2018-11-07 20:55:43,208 INFO L226 Difference]: Without dead ends: 6311 [2018-11-07 20:55:43,215 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 643 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2018-11-07 20:55:43,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6311 states. [2018-11-07 20:55:43,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6311 to 6305. [2018-11-07 20:55:43,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6305 states. [2018-11-07 20:55:43,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6305 states to 6305 states and 6874 transitions. [2018-11-07 20:55:43,335 INFO L78 Accepts]: Start accepts. Automaton has 6305 states and 6874 transitions. Word has length 635 [2018-11-07 20:55:43,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:55:43,336 INFO L480 AbstractCegarLoop]: Abstraction has 6305 states and 6874 transitions. [2018-11-07 20:55:43,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 20:55:43,337 INFO L276 IsEmpty]: Start isEmpty. Operand 6305 states and 6874 transitions. [2018-11-07 20:55:43,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2018-11-07 20:55:43,353 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:55:43,353 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:55:43,354 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:55:43,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:55:43,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1227106182, now seen corresponding path program 1 times [2018-11-07 20:55:43,354 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:55:43,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:55:43,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:55:43,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:55:43,356 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:55:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:55:44,104 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-07 20:55:44,310 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 25 Received shutdown request... [2018-11-07 20:55:46,284 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 428 proven. 396 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2018-11-07 20:55:46,284 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:55:46,284 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:55:46,284 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 751 with the following transitions: [2018-11-07 20:55:46,284 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [551], [553], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1288], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:55:46,288 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:55:46,288 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:55:46,288 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 20:55:46,289 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 20:55:46,289 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 20:55:46,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:55:46,290 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:55:46,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:55:46,298 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:55:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:55:46,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:55:46,523 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 20:55:46,724 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:55:46,724 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:55:46,729 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:55:46,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:55:46 BoogieIcfgContainer [2018-11-07 20:55:46,730 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:55:46,730 INFO L168 Benchmark]: Toolchain (without parser) took 214835.00 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 2.2 GB in the end (delta: -826.2 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 20:55:46,731 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:55:46,732 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1175.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-07 20:55:46,733 INFO L168 Benchmark]: Boogie Procedure Inliner took 214.01 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 691.0 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -814.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 20:55:46,733 INFO L168 Benchmark]: Boogie Preprocessor took 145.63 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:55:46,734 INFO L168 Benchmark]: RCFGBuilder took 5801.83 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 252.4 MB). Peak memory consumption was 252.4 MB. Max. memory is 7.1 GB. [2018-11-07 20:55:46,735 INFO L168 Benchmark]: TraceAbstraction took 207492.99 ms. Allocated memory was 2.2 GB in the beginning and 4.5 GB in the end (delta: 2.3 GB). Free memory was 1.9 GB in the beginning and 2.2 GB in the end (delta: -338.4 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 20:55:46,739 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 1175.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 214.01 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 691.0 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -814.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.63 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5801.83 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 252.4 MB). Peak memory consumption was 252.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207492.99 ms. Allocated memory was 2.2 GB in the beginning and 4.5 GB in the end (delta: 2.3 GB). Free memory was 1.9 GB in the beginning and 2.2 GB in the end (delta: -338.4 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 163). Cancelled while BasicCegarLoop was analyzing trace of length 751 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 207.4s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 166.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2697 SDtfs, 31759 SDslu, 1522 SDs, 0 SdLazy, 33377 SolverSat, 7270 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.2s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 4190 GetRequests, 3803 SyntacticMatches, 155 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3168 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6305occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.3s AbstIntTime, 8 AbstIntIterations, 6 AbstIntStrong, 0.9978860451731718 AbsIntWeakeningRatio, 0.06938923021322732 AbsIntAvgWeakeningVarsNumRemoved, 10.45681243223708 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 612 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 4405 NumberOfCodeBlocks, 4405 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 5011 ConstructedInterpolants, 0 QuantifiedInterpolants, 13484373 SizeOfPredicates, 1 NumberOfNonLiveVariables, 884 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 4021/5567 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown