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/Problem11_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 18:44:00,007 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 18:44:00,010 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 18:44:00,026 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 18:44:00,026 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 18:44:00,027 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 18:44:00,028 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 18:44:00,030 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 18:44:00,032 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 18:44:00,032 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 18:44:00,033 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 18:44:00,034 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 18:44:00,035 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 18:44:00,036 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 18:44:00,037 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 18:44:00,037 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 18:44:00,038 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 18:44:00,040 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 18:44:00,042 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 18:44:00,044 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 18:44:00,045 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 18:44:00,046 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 18:44:00,048 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 18:44:00,048 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 18:44:00,049 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 18:44:00,049 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 18:44:00,051 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 18:44:00,051 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 18:44:00,052 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 18:44:00,053 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 18:44:00,053 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 18:44:00,054 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 18:44:00,054 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 18:44:00,058 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 18:44:00,059 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 18:44:00,059 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 18:44:00,061 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 18:44:00,087 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 18:44:00,088 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 18:44:00,091 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 18:44:00,091 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 18:44:00,091 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 18:44:00,091 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 18:44:00,092 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 18:44:00,092 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 18:44:00,092 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 18:44:00,092 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 18:44:00,092 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 18:44:00,093 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 18:44:00,093 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 18:44:00,094 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 18:44:00,094 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 18:44:00,094 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 18:44:00,094 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 18:44:00,094 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 18:44:00,095 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 18:44:00,095 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 18:44:00,095 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 18:44:00,095 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 18:44:00,095 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 18:44:00,095 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 18:44:00,096 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 18:44:00,096 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:44:00,096 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 18:44:00,096 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 18:44:00,096 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 18:44:00,097 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 18:44:00,097 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 18:44:00,097 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 18:44:00,097 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 18:44:00,097 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 18:44:00,098 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 18:44:00,143 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 18:44:00,158 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 18:44:00,163 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 18:44:00,165 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 18:44:00,165 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 18:44:00,166 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label59_true-unreach-call.c [2018-11-12 18:44:00,242 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d0a5a838/c998480d797e43d18e815c7d5007846b/FLAGa9f33e518 [2018-11-12 18:44:00,964 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 18:44:00,967 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label59_true-unreach-call.c [2018-11-12 18:44:00,982 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d0a5a838/c998480d797e43d18e815c7d5007846b/FLAGa9f33e518 [2018-11-12 18:44:00,998 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d0a5a838/c998480d797e43d18e815c7d5007846b [2018-11-12 18:44:01,009 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 18:44:01,010 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 18:44:01,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 18:44:01,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 18:44:01,018 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 18:44:01,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:44:00" (1/1) ... [2018-11-12 18:44:01,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e5b642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:44:01, skipping insertion in model container [2018-11-12 18:44:01,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:44:00" (1/1) ... [2018-11-12 18:44:01,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 18:44:01,125 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 18:44:01,836 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:44:01,843 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 18:44:02,072 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:44:02,100 INFO L193 MainTranslator]: Completed translation [2018-11-12 18:44:02,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:44:02 WrapperNode [2018-11-12 18:44:02,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 18:44:02,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 18:44:02,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 18:44:02,102 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 18:44:02,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:44:02" (1/1) ... [2018-11-12 18:44:02,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:44:02" (1/1) ... [2018-11-12 18:44:02,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 18:44:02,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 18:44:02,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 18:44:02,304 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 18:44:02,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:44:02" (1/1) ... [2018-11-12 18:44:02,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:44:02" (1/1) ... [2018-11-12 18:44:02,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:44:02" (1/1) ... [2018-11-12 18:44:02,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:44:02" (1/1) ... [2018-11-12 18:44:02,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:44:02" (1/1) ... [2018-11-12 18:44:02,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:44:02" (1/1) ... [2018-11-12 18:44:02,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:44:02" (1/1) ... [2018-11-12 18:44:02,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 18:44:02,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 18:44:02,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 18:44:02,413 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 18:44:02,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:44:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:44:02,503 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 18:44:02,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 18:44:02,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 18:44:02,504 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 18:44:02,504 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 18:44:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 18:44:02,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 18:44:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 18:44:02,505 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 18:44:06,944 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 18:44:06,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:44:06 BoogieIcfgContainer [2018-11-12 18:44:06,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 18:44:06,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 18:44:06,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 18:44:06,951 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 18:44:06,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:44:00" (1/3) ... [2018-11-12 18:44:06,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4301b63a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:44:06, skipping insertion in model container [2018-11-12 18:44:06,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:44:02" (2/3) ... [2018-11-12 18:44:06,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4301b63a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:44:06, skipping insertion in model container [2018-11-12 18:44:06,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:44:06" (3/3) ... [2018-11-12 18:44:06,956 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label59_true-unreach-call.c [2018-11-12 18:44:06,967 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 18:44:06,978 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 18:44:06,997 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 18:44:07,037 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 18:44:07,037 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 18:44:07,037 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 18:44:07,037 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 18:44:07,038 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 18:44:07,038 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 18:44:07,038 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 18:44:07,038 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 18:44:07,068 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-12 18:44:07,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-12 18:44:07,085 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:44:07,086 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:44:07,088 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:44:07,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:44:07,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1395021716, now seen corresponding path program 1 times [2018-11-12 18:44:07,096 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:44:07,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:44:07,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:44:07,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:44:07,154 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:44:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:44:07,672 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:44:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:44:07,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:44:07,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 18:44:07,774 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:44:07,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:44:07,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:44:07,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:44:07,800 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-11-12 18:44:09,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:44:09,866 INFO L93 Difference]: Finished difference Result 785 states and 1378 transitions. [2018-11-12 18:44:09,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:44:09,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-11-12 18:44:09,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:44:09,890 INFO L225 Difference]: With dead ends: 785 [2018-11-12 18:44:09,890 INFO L226 Difference]: Without dead ends: 490 [2018-11-12 18:44:09,899 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 [2018-11-12 18:44:09,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2018-11-12 18:44:09,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 482. [2018-11-12 18:44:09,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-11-12 18:44:09,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 841 transitions. [2018-11-12 18:44:09,989 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 841 transitions. Word has length 66 [2018-11-12 18:44:09,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:44:09,990 INFO L480 AbstractCegarLoop]: Abstraction has 482 states and 841 transitions. [2018-11-12 18:44:09,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:44:09,991 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 841 transitions. [2018-11-12 18:44:09,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-12 18:44:10,000 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:44:10,000 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:44:10,000 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:44:10,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:44:10,001 INFO L82 PathProgramCache]: Analyzing trace with hash -994011168, now seen corresponding path program 1 times [2018-11-12 18:44:10,001 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:44:10,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:44:10,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:44:10,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:44:10,003 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:44:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:44:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:44:10,372 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:44:10,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:44:10,372 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:44:10,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:44:10,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:44:10,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:44:10,375 INFO L87 Difference]: Start difference. First operand 482 states and 841 transitions. Second operand 6 states. [2018-11-12 18:44:15,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:44:15,555 INFO L93 Difference]: Finished difference Result 1762 states and 3209 transitions. [2018-11-12 18:44:15,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 18:44:15,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-11-12 18:44:15,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:44:15,570 INFO L225 Difference]: With dead ends: 1762 [2018-11-12 18:44:15,571 INFO L226 Difference]: Without dead ends: 1286 [2018-11-12 18:44:15,576 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 18:44:15,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2018-11-12 18:44:15,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1252. [2018-11-12 18:44:15,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1252 states. [2018-11-12 18:44:15,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1988 transitions. [2018-11-12 18:44:15,686 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1988 transitions. Word has length 136 [2018-11-12 18:44:15,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:44:15,687 INFO L480 AbstractCegarLoop]: Abstraction has 1252 states and 1988 transitions. [2018-11-12 18:44:15,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:44:15,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1988 transitions. [2018-11-12 18:44:15,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-12 18:44:15,703 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:44:15,706 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:44:15,707 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:44:15,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:44:15,707 INFO L82 PathProgramCache]: Analyzing trace with hash -2016062845, now seen corresponding path program 1 times [2018-11-12 18:44:15,707 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:44:15,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:44:15,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:44:15,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:44:15,709 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:44:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:44:16,016 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:44:16,141 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:44:16,141 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:44:16,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:44:16,142 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:44:16,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:44:16,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:44:16,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:44:16,143 INFO L87 Difference]: Start difference. First operand 1252 states and 1988 transitions. Second operand 6 states. [2018-11-12 18:44:19,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:44:19,004 INFO L93 Difference]: Finished difference Result 3466 states and 5570 transitions. [2018-11-12 18:44:19,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:44:19,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-11-12 18:44:19,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:44:19,022 INFO L225 Difference]: With dead ends: 3466 [2018-11-12 18:44:19,023 INFO L226 Difference]: Without dead ends: 2220 [2018-11-12 18:44:19,030 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 18:44:19,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2018-11-12 18:44:19,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 2195. [2018-11-12 18:44:19,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2195 states. [2018-11-12 18:44:19,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 3227 transitions. [2018-11-12 18:44:19,110 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 3227 transitions. Word has length 139 [2018-11-12 18:44:19,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:44:19,110 INFO L480 AbstractCegarLoop]: Abstraction has 2195 states and 3227 transitions. [2018-11-12 18:44:19,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:44:19,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 3227 transitions. [2018-11-12 18:44:19,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-12 18:44:19,115 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:44:19,115 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:44:19,117 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:44:19,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:44:19,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1284370280, now seen corresponding path program 1 times [2018-11-12 18:44:19,117 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:44:19,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:44:19,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:44:19,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:44:19,119 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:44:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:44:19,659 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:44:19,659 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:44:19,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-12 18:44:19,659 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:44:19,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 18:44:19,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 18:44:19,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 18:44:19,661 INFO L87 Difference]: Start difference. First operand 2195 states and 3227 transitions. Second operand 7 states. [2018-11-12 18:44:24,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:44:24,816 INFO L93 Difference]: Finished difference Result 5920 states and 8968 transitions. [2018-11-12 18:44:24,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-12 18:44:24,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2018-11-12 18:44:24,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:44:24,842 INFO L225 Difference]: With dead ends: 5920 [2018-11-12 18:44:24,843 INFO L226 Difference]: Without dead ends: 3731 [2018-11-12 18:44:24,857 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-12 18:44:24,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2018-11-12 18:44:24,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 3559. [2018-11-12 18:44:24,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3559 states. [2018-11-12 18:44:24,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3559 states to 3559 states and 4983 transitions. [2018-11-12 18:44:24,969 INFO L78 Accepts]: Start accepts. Automaton has 3559 states and 4983 transitions. Word has length 140 [2018-11-12 18:44:24,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:44:24,969 INFO L480 AbstractCegarLoop]: Abstraction has 3559 states and 4983 transitions. [2018-11-12 18:44:24,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 18:44:24,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3559 states and 4983 transitions. [2018-11-12 18:44:24,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-11-12 18:44:24,973 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:44:24,974 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:44:24,974 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:44:24,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:44:24,975 INFO L82 PathProgramCache]: Analyzing trace with hash -2129360111, now seen corresponding path program 1 times [2018-11-12 18:44:24,975 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:44:24,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:44:24,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:44:24,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:44:24,976 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:44:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:44:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:44:25,152 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:44:25,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 18:44:25,153 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:44:25,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:44:25,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:44:25,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:44:25,155 INFO L87 Difference]: Start difference. First operand 3559 states and 4983 transitions. Second operand 3 states. [2018-11-12 18:44:27,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:44:27,360 INFO L93 Difference]: Finished difference Result 8037 states and 11665 transitions. [2018-11-12 18:44:27,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:44:27,362 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2018-11-12 18:44:27,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:44:27,385 INFO L225 Difference]: With dead ends: 8037 [2018-11-12 18:44:27,386 INFO L226 Difference]: Without dead ends: 4484 [2018-11-12 18:44:27,397 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:44:27,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4484 states. [2018-11-12 18:44:27,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4484 to 4423. [2018-11-12 18:44:27,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4423 states. [2018-11-12 18:44:27,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4423 states to 4423 states and 5864 transitions. [2018-11-12 18:44:27,500 INFO L78 Accepts]: Start accepts. Automaton has 4423 states and 5864 transitions. Word has length 198 [2018-11-12 18:44:27,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:44:27,501 INFO L480 AbstractCegarLoop]: Abstraction has 4423 states and 5864 transitions. [2018-11-12 18:44:27,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:44:27,501 INFO L276 IsEmpty]: Start isEmpty. Operand 4423 states and 5864 transitions. [2018-11-12 18:44:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-11-12 18:44:27,506 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:44:27,506 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:44:27,507 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:44:27,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:44:27,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1377359462, now seen corresponding path program 1 times [2018-11-12 18:44:27,507 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:44:27,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:44:27,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:44:27,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:44:27,511 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:44:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:44:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:44:28,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:44:28,052 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:44:28,053 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-11-12 18:44:28,055 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:44:28,113 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:44:28,114 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:44:28,875 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:44:30,552 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:44:30,561 INFO L272 AbstractInterpreter]: Visited 156 different actions 454 times. Merged at 5 different actions 9 times. Never widened. Performed 8531 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8531 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:44:30,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:44:30,606 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:44:30,606 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:44:30,606 INFO L192 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 [2018-11-12 18:44:30,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:44:30,624 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:44:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:44:30,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:44:34,815 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2018-11-12 18:44:34,921 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:44:34,922 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:44:35,083 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-12 18:44:35,180 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:44:35,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 18:44:35,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 9 [2018-11-12 18:44:35,202 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:44:35,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:44:35,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:44:35,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=47, Unknown=2, NotChecked=0, Total=72 [2018-11-12 18:44:35,203 INFO L87 Difference]: Start difference. First operand 4423 states and 5864 transitions. Second operand 3 states. [2018-11-12 18:44:38,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:44:38,154 INFO L93 Difference]: Finished difference Result 10058 states and 13943 transitions. [2018-11-12 18:44:38,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:44:38,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2018-11-12 18:44:38,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:44:38,185 INFO L225 Difference]: With dead ends: 10058 [2018-11-12 18:44:38,186 INFO L226 Difference]: Without dead ends: 5641 [2018-11-12 18:44:38,209 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 426 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=23, Invalid=47, Unknown=2, NotChecked=0, Total=72 [2018-11-12 18:44:38,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5641 states. [2018-11-12 18:44:38,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5641 to 5599. [2018-11-12 18:44:38,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5599 states. [2018-11-12 18:44:38,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5599 states to 5599 states and 7753 transitions. [2018-11-12 18:44:38,354 INFO L78 Accepts]: Start accepts. Automaton has 5599 states and 7753 transitions. Word has length 214 [2018-11-12 18:44:38,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:44:38,354 INFO L480 AbstractCegarLoop]: Abstraction has 5599 states and 7753 transitions. [2018-11-12 18:44:38,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:44:38,354 INFO L276 IsEmpty]: Start isEmpty. Operand 5599 states and 7753 transitions. [2018-11-12 18:44:38,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-11-12 18:44:38,366 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:44:38,367 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:44:38,367 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:44:38,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:44:38,367 INFO L82 PathProgramCache]: Analyzing trace with hash -2132579400, now seen corresponding path program 1 times [2018-11-12 18:44:38,368 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:44:38,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:44:38,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:44:38,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:44:38,369 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:44:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:44:38,958 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:44:38,958 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:44:38,958 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:44:38,958 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 296 with the following transitions: [2018-11-12 18:44:38,959 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [602], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:44:38,973 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:44:38,973 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:44:39,171 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:44:40,236 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:44:40,237 INFO L272 AbstractInterpreter]: Visited 140 different actions 407 times. Merged at 5 different actions 9 times. Never widened. Performed 6185 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6185 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:44:40,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:44:40,275 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:44:41,081 INFO L227 lantSequenceWeakener]: Weakened 292 states. On average, predicates are now at 73.69% of their original sizes. [2018-11-12 18:44:41,081 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:44:41,472 INFO L415 sIntCurrentIteration]: We unified 294 AI predicates to 294 [2018-11-12 18:44:41,472 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:44:41,473 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:44:41,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-11-12 18:44:41,473 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:44:41,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-12 18:44:41,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-12 18:44:41,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-11-12 18:44:41,475 INFO L87 Difference]: Start difference. First operand 5599 states and 7753 transitions. Second operand 13 states. [2018-11-12 18:45:15,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:45:15,780 INFO L93 Difference]: Finished difference Result 11778 states and 16250 transitions. [2018-11-12 18:45:15,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 18:45:15,780 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 295 [2018-11-12 18:45:15,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:45:15,806 INFO L225 Difference]: With dead ends: 11778 [2018-11-12 18:45:15,806 INFO L226 Difference]: Without dead ends: 6185 [2018-11-12 18:45:15,826 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 304 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2018-11-12 18:45:15,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6185 states. [2018-11-12 18:45:15,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6185 to 6179. [2018-11-12 18:45:15,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6179 states. [2018-11-12 18:45:15,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6179 states to 6179 states and 8371 transitions. [2018-11-12 18:45:15,958 INFO L78 Accepts]: Start accepts. Automaton has 6179 states and 8371 transitions. Word has length 295 [2018-11-12 18:45:15,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:45:15,958 INFO L480 AbstractCegarLoop]: Abstraction has 6179 states and 8371 transitions. [2018-11-12 18:45:15,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-12 18:45:15,958 INFO L276 IsEmpty]: Start isEmpty. Operand 6179 states and 8371 transitions. [2018-11-12 18:45:15,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-11-12 18:45:15,973 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:45:15,974 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:45:15,974 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:45:15,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:45:15,975 INFO L82 PathProgramCache]: Analyzing trace with hash 353453794, now seen corresponding path program 1 times [2018-11-12 18:45:15,975 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:45:15,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:45:15,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:45:15,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:45:15,976 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:45:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:45:16,772 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 183 proven. 144 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-12 18:45:16,772 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:45:16,773 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:45:16,773 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 345 with the following transitions: [2018-11-12 18:45:16,773 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:45:16,778 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:45:16,778 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:45:16,949 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:45:17,068 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:45:17,068 INFO L272 AbstractInterpreter]: Visited 126 different actions 246 times. Merged at 5 different actions 5 times. Never widened. Performed 4323 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4323 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:45:17,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:45:17,077 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:45:17,567 INFO L227 lantSequenceWeakener]: Weakened 341 states. On average, predicates are now at 73.57% of their original sizes. [2018-11-12 18:45:17,567 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:45:17,874 INFO L415 sIntCurrentIteration]: We unified 343 AI predicates to 343 [2018-11-12 18:45:17,874 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:45:17,874 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:45:17,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-11-12 18:45:17,875 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:45:17,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 18:45:17,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 18:45:17,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-12 18:45:17,876 INFO L87 Difference]: Start difference. First operand 6179 states and 8371 transitions. Second operand 10 states. [2018-11-12 18:45:24,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:45:24,371 INFO L93 Difference]: Finished difference Result 11969 states and 16396 transitions. [2018-11-12 18:45:24,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-12 18:45:24,372 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 344 [2018-11-12 18:45:24,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:45:24,398 INFO L225 Difference]: With dead ends: 11969 [2018-11-12 18:45:24,398 INFO L226 Difference]: Without dead ends: 6376 [2018-11-12 18:45:24,415 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 350 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-12 18:45:24,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6376 states. [2018-11-12 18:45:24,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6376 to 6373. [2018-11-12 18:45:24,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6373 states. [2018-11-12 18:45:24,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6373 states to 6373 states and 8582 transitions. [2018-11-12 18:45:24,542 INFO L78 Accepts]: Start accepts. Automaton has 6373 states and 8582 transitions. Word has length 344 [2018-11-12 18:45:24,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:45:24,543 INFO L480 AbstractCegarLoop]: Abstraction has 6373 states and 8582 transitions. [2018-11-12 18:45:24,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 18:45:24,543 INFO L276 IsEmpty]: Start isEmpty. Operand 6373 states and 8582 transitions. [2018-11-12 18:45:24,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-11-12 18:45:24,561 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:45:24,561 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, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:45:24,562 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:45:24,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:45:24,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1897027030, now seen corresponding path program 1 times [2018-11-12 18:45:24,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:45:24,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:45:24,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:45:24,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:45:24,564 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:45:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:45:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 190 proven. 219 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-12 18:45:26,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:45:26,359 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:45:26,359 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 355 with the following transitions: [2018-11-12 18:45:26,359 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:45:26,363 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:45:26,363 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:45:26,444 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:45:27,156 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:45:27,156 INFO L272 AbstractInterpreter]: Visited 137 different actions 677 times. Merged at 8 different actions 39 times. Widened at 1 different actions 1 times. Performed 10533 root evaluator evaluations with a maximum evaluation depth of 6. Performed 10533 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 8 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-12 18:45:27,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:45:27,162 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:45:27,162 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:45:27,162 INFO L192 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 [2018-11-12 18:45:27,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:45:27,172 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:45:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:45:27,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:45:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-12 18:45:28,096 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:45:29,230 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-12 18:45:29,252 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:45:29,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 18 [2018-11-12 18:45:29,252 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:45:29,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 18:45:29,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 18:45:29,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2018-11-12 18:45:29,254 INFO L87 Difference]: Start difference. First operand 6373 states and 8582 transitions. Second operand 16 states. [2018-11-12 18:45:39,633 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 26 [2018-11-12 18:45:47,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:45:47,248 INFO L93 Difference]: Finished difference Result 20749 states and 32211 transitions. [2018-11-12 18:45:47,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-11-12 18:45:47,249 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 354 [2018-11-12 18:45:47,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:45:47,326 INFO L225 Difference]: With dead ends: 20749 [2018-11-12 18:45:47,326 INFO L226 Difference]: Without dead ends: 15156 [2018-11-12 18:45:47,363 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 773 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3152 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1451, Invalid=7479, Unknown=0, NotChecked=0, Total=8930 [2018-11-12 18:45:47,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15156 states. [2018-11-12 18:45:47,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15156 to 14576. [2018-11-12 18:45:47,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14576 states. [2018-11-12 18:45:47,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14576 states to 14576 states and 19996 transitions. [2018-11-12 18:45:47,759 INFO L78 Accepts]: Start accepts. Automaton has 14576 states and 19996 transitions. Word has length 354 [2018-11-12 18:45:47,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:45:47,760 INFO L480 AbstractCegarLoop]: Abstraction has 14576 states and 19996 transitions. [2018-11-12 18:45:47,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 18:45:47,760 INFO L276 IsEmpty]: Start isEmpty. Operand 14576 states and 19996 transitions. [2018-11-12 18:45:47,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-11-12 18:45:47,795 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:45:47,796 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:45:47,796 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:45:47,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:45:47,797 INFO L82 PathProgramCache]: Analyzing trace with hash -173512890, now seen corresponding path program 1 times [2018-11-12 18:45:47,797 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:45:47,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:45:47,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:45:47,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:45:47,798 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:45:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:45:48,465 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 186 proven. 229 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 18:45:48,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:45:48,466 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:45:48,466 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 363 with the following transitions: [2018-11-12 18:45:48,466 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:45:48,470 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:45:48,470 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:45:48,528 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:45:48,800 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:45:48,800 INFO L272 AbstractInterpreter]: Visited 136 different actions 395 times. Merged at 5 different actions 9 times. Never widened. Performed 5163 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5163 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:45:48,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:45:48,802 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:45:49,217 INFO L227 lantSequenceWeakener]: Weakened 359 states. On average, predicates are now at 73.57% of their original sizes. [2018-11-12 18:45:49,217 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:45:49,310 INFO L415 sIntCurrentIteration]: We unified 361 AI predicates to 361 [2018-11-12 18:45:49,310 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:45:49,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:45:49,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2018-11-12 18:45:49,310 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:45:49,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:45:49,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:45:49,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:45:49,311 INFO L87 Difference]: Start difference. First operand 14576 states and 19996 transitions. Second operand 11 states. [2018-11-12 18:45:58,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:45:58,979 INFO L93 Difference]: Finished difference Result 26644 states and 36648 transitions. [2018-11-12 18:45:58,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 18:45:58,979 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 362 [2018-11-12 18:45:58,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:45:59,035 INFO L225 Difference]: With dead ends: 26644 [2018-11-12 18:45:59,035 INFO L226 Difference]: Without dead ends: 14964 [2018-11-12 18:45:59,067 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 371 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-11-12 18:45:59,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14964 states. [2018-11-12 18:45:59,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14964 to 14957. [2018-11-12 18:45:59,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14957 states. [2018-11-12 18:45:59,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14957 states to 14957 states and 20409 transitions. [2018-11-12 18:45:59,858 INFO L78 Accepts]: Start accepts. Automaton has 14957 states and 20409 transitions. Word has length 362 [2018-11-12 18:45:59,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:45:59,858 INFO L480 AbstractCegarLoop]: Abstraction has 14957 states and 20409 transitions. [2018-11-12 18:45:59,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:45:59,859 INFO L276 IsEmpty]: Start isEmpty. Operand 14957 states and 20409 transitions. [2018-11-12 18:45:59,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-11-12 18:45:59,896 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:45:59,897 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-12 18:45:59,897 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:45:59,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:45:59,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1343552570, now seen corresponding path program 1 times [2018-11-12 18:45:59,897 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:45:59,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:45:59,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:45:59,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:45:59,899 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:45:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:46:00,404 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-12 18:46:00,593 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-12 18:46:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 269 proven. 88 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-11-12 18:46:01,183 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:46:01,183 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:46:01,184 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 376 with the following transitions: [2018-11-12 18:46:01,184 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [570], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [633], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:46:01,186 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:46:01,186 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:46:01,265 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:46:01,833 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:46:01,834 INFO L272 AbstractInterpreter]: Visited 127 different actions 627 times. Merged at 8 different actions 40 times. Widened at 1 different actions 1 times. Performed 9306 root evaluator evaluations with a maximum evaluation depth of 6. Performed 9306 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 8 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-12 18:46:01,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:46:01,842 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:46:01,842 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:46:01,842 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:46:01,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:46:01,853 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:46:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:46:01,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:46:02,096 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 310 proven. 57 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-11-12 18:46:02,096 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:46:02,313 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 365 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-11-12 18:46:02,333 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:46:02,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 14 [2018-11-12 18:46:02,334 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:46:02,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-12 18:46:02,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-12 18:46:02,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2018-11-12 18:46:02,335 INFO L87 Difference]: Start difference. First operand 14957 states and 20409 transitions. Second operand 13 states. [2018-11-12 18:46:04,224 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2018-11-12 18:46:10,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:46:10,268 INFO L93 Difference]: Finished difference Result 31745 states and 48810 transitions. [2018-11-12 18:46:10,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-12 18:46:10,269 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 375 [2018-11-12 18:46:10,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:46:10,340 INFO L225 Difference]: With dead ends: 31745 [2018-11-12 18:46:10,340 INFO L226 Difference]: Without dead ends: 17568 [2018-11-12 18:46:10,405 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 769 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=538, Invalid=1718, Unknown=0, NotChecked=0, Total=2256 [2018-11-12 18:46:10,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17568 states. [2018-11-12 18:46:10,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17568 to 16850. [2018-11-12 18:46:10,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16850 states. [2018-11-12 18:46:10,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16850 states to 16850 states and 22384 transitions. [2018-11-12 18:46:10,854 INFO L78 Accepts]: Start accepts. Automaton has 16850 states and 22384 transitions. Word has length 375 [2018-11-12 18:46:10,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:46:10,855 INFO L480 AbstractCegarLoop]: Abstraction has 16850 states and 22384 transitions. [2018-11-12 18:46:10,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-12 18:46:10,855 INFO L276 IsEmpty]: Start isEmpty. Operand 16850 states and 22384 transitions. [2018-11-12 18:46:10,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-11-12 18:46:10,889 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:46:10,889 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-12 18:46:10,890 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:46:10,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:46:10,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1223594059, now seen corresponding path program 1 times [2018-11-12 18:46:10,890 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:46:10,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:46:10,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:46:10,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:46:10,891 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:46:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:46:11,336 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 18:46:11,670 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-12 18:46:11,989 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-11-12 18:46:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 181 proven. 239 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:46:12,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:46:12,938 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:46:12,938 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 384 with the following transitions: [2018-11-12 18:46:12,938 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:46:12,942 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:46:12,942 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:46:12,996 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:46:13,530 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:46:13,531 INFO L272 AbstractInterpreter]: Visited 158 different actions 460 times. Merged at 5 different actions 9 times. Never widened. Performed 8848 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8848 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:46:13,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:46:13,539 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:46:13,539 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:46:13,539 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:46:13,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:46:13,550 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:46:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:46:13,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:46:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-11-12 18:46:14,152 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:46:14,774 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-11-12 18:46:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 183 proven. 232 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 18:46:15,396 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:46:15,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 8, 8] total 29 [2018-11-12 18:46:15,396 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:46:15,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-12 18:46:15,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-12 18:46:15,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2018-11-12 18:46:15,398 INFO L87 Difference]: Start difference. First operand 16850 states and 22384 transitions. Second operand 24 states. [2018-11-12 18:46:17,016 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 29 [2018-11-12 18:46:23,066 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2018-11-12 18:46:25,227 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-12 18:46:28,693 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-12 18:46:35,135 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 33 [2018-11-12 18:46:57,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:46:57,661 INFO L93 Difference]: Finished difference Result 40332 states and 70255 transitions. [2018-11-12 18:46:57,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-11-12 18:46:57,661 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 383 [2018-11-12 18:46:57,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:46:57,833 INFO L225 Difference]: With dead ends: 40332 [2018-11-12 18:46:57,834 INFO L226 Difference]: Without dead ends: 24831 [2018-11-12 18:46:57,949 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 756 SyntacticMatches, 1 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13879 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=4311, Invalid=32361, Unknown=0, NotChecked=0, Total=36672 [2018-11-12 18:46:57,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24831 states. [2018-11-12 18:46:58,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24831 to 21376. [2018-11-12 18:46:58,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21376 states. [2018-11-12 18:46:58,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21376 states to 21376 states and 27721 transitions. [2018-11-12 18:46:58,817 INFO L78 Accepts]: Start accepts. Automaton has 21376 states and 27721 transitions. Word has length 383 [2018-11-12 18:46:58,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:46:58,817 INFO L480 AbstractCegarLoop]: Abstraction has 21376 states and 27721 transitions. [2018-11-12 18:46:58,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-12 18:46:58,817 INFO L276 IsEmpty]: Start isEmpty. Operand 21376 states and 27721 transitions. [2018-11-12 18:46:58,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-11-12 18:46:58,838 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:46:58,838 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:46:58,838 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:46:58,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:46:58,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1604217628, now seen corresponding path program 1 times [2018-11-12 18:46:58,839 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:46:58,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:46:58,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:46:58,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:46:58,840 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:46:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:46:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 371 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:46:59,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:46:59,434 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:46:59,434 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 389 with the following transitions: [2018-11-12 18:46:59,435 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [780], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:46:59,439 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:46:59,439 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:46:59,813 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:47:00,485 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:47:00,485 INFO L272 AbstractInterpreter]: Visited 141 different actions 699 times. Merged at 8 different actions 41 times. Widened at 1 different actions 1 times. Performed 11331 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11331 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 8 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-12 18:47:00,492 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:47:00,492 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:47:00,492 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:47:00,492 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:47:00,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:47:00,502 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:47:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:47:00,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:47:00,902 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-12 18:47:00,902 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:47:01,156 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2018-11-12 18:47:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-12 18:47:01,628 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:47:01,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2018-11-12 18:47:01,629 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:47:01,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-12 18:47:01,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-12 18:47:01,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2018-11-12 18:47:01,630 INFO L87 Difference]: Start difference. First operand 21376 states and 27721 transitions. Second operand 13 states. [2018-11-12 18:47:04,621 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 16 [2018-11-12 18:47:10,328 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 17 [2018-11-12 18:47:12,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:47:12,247 INFO L93 Difference]: Finished difference Result 51032 states and 74687 transitions. [2018-11-12 18:47:12,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-11-12 18:47:12,247 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 388 [2018-11-12 18:47:12,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:47:12,329 INFO L225 Difference]: With dead ends: 51032 [2018-11-12 18:47:12,329 INFO L226 Difference]: Without dead ends: 20179 [2018-11-12 18:47:12,434 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 862 GetRequests, 806 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=647, Invalid=2545, Unknown=0, NotChecked=0, Total=3192 [2018-11-12 18:47:12,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20179 states. [2018-11-12 18:47:12,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20179 to 19270. [2018-11-12 18:47:12,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19270 states. [2018-11-12 18:47:12,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19270 states to 19270 states and 23959 transitions. [2018-11-12 18:47:12,931 INFO L78 Accepts]: Start accepts. Automaton has 19270 states and 23959 transitions. Word has length 388 [2018-11-12 18:47:12,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:47:12,932 INFO L480 AbstractCegarLoop]: Abstraction has 19270 states and 23959 transitions. [2018-11-12 18:47:12,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-12 18:47:12,932 INFO L276 IsEmpty]: Start isEmpty. Operand 19270 states and 23959 transitions. [2018-11-12 18:47:12,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2018-11-12 18:47:12,946 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:47:12,947 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:47:12,947 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:47:12,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:47:12,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1113148297, now seen corresponding path program 1 times [2018-11-12 18:47:12,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:47:12,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:47:12,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:47:12,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:47:12,948 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:47:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:47:13,301 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 3 [2018-11-12 18:47:13,488 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 3 [2018-11-12 18:47:13,598 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2018-11-12 18:47:13,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:47:13,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 18:47:13,599 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:47:13,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 18:47:13,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 18:47:13,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:47:13,600 INFO L87 Difference]: Start difference. First operand 19270 states and 23959 transitions. Second operand 4 states. [2018-11-12 18:47:15,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:47:15,289 INFO L93 Difference]: Finished difference Result 40845 states and 52078 transitions. [2018-11-12 18:47:15,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 18:47:15,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 433 [2018-11-12 18:47:15,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:47:15,291 INFO L225 Difference]: With dead ends: 40845 [2018-11-12 18:47:15,291 INFO L226 Difference]: Without dead ends: 0 [2018-11-12 18:47:15,357 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:47:15,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-12 18:47:15,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-12 18:47:15,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-12 18:47:15,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-12 18:47:15,358 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 433 [2018-11-12 18:47:15,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:47:15,359 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-12 18:47:15,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 18:47:15,359 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-12 18:47:15,359 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-12 18:47:15,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-12 18:47:15,827 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:15,855 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:15,856 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:15,857 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:15,859 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:15,908 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:15,910 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:15,910 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:15,913 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:15,914 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:15,918 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:15,927 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:15,929 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:15,944 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:15,946 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:15,951 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:15,975 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:15,992 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:15,993 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,019 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,041 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,066 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,067 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,067 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,097 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,187 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,316 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,317 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,436 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,453 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,545 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,571 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,571 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,572 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,591 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,608 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,644 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,646 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,647 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,702 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,713 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,776 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,796 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,797 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,809 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,873 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,885 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,945 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:16,946 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:17,230 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:17,469 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:18,029 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:18,098 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:18,142 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:18,446 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:18,560 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:18,673 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:19,064 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:19,154 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:19,474 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:20,299 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:20,568 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:20,616 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,174 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,230 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,310 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,419 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,511 WARN L179 SmtUtils]: Spent 5.71 s on a formula simplification. DAG size of input: 1012 DAG size of output: 786 [2018-11-12 18:47:21,534 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,547 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,548 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,548 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,550 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,580 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,580 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,581 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,583 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,584 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,585 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,592 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,595 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,606 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,608 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,611 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,686 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,698 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,720 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,738 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,757 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,757 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,758 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,781 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,850 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,948 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:21,948 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,035 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,044 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,097 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,118 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,118 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,119 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,133 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,143 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,162 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,162 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,163 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,188 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,194 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,227 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,238 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,239 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,250 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,286 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,294 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,324 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,324 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,421 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,588 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,806 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,861 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:22,899 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:23,013 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:23,067 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:23,120 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:23,184 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:23,223 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:23,262 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:23,379 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:23,810 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:23,967 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:23,997 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:24,505 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:24,538 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:24,583 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:24,648 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-12 18:47:24,736 WARN L179 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 1024 DAG size of output: 796 [2018-11-12 18:47:27,041 WARN L179 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 495 DAG size of output: 60 Received shutdown request... [2018-11-12 18:47:31,066 WARN L187 SmtUtils]: Removed 13 from assertion stack [2018-11-12 18:47:31,066 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-11-12 18:47:31,067 INFO L168 Benchmark]: Toolchain (without parser) took 210058.17 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 139.8 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-11-12 18:47:31,069 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 18:47:31,069 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1089.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-12 18:47:31,070 INFO L168 Benchmark]: Boogie Procedure Inliner took 201.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 724.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2018-11-12 18:47:31,071 INFO L168 Benchmark]: Boogie Preprocessor took 108.44 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 18:47:31,072 INFO L168 Benchmark]: RCFGBuilder took 4533.54 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 192.4 MB). Peak memory consumption was 192.4 MB. Max. memory is 7.1 GB. [2018-11-12 18:47:31,072 INFO L168 Benchmark]: TraceAbstraction took 204119.58 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 1.3 GB in the end (delta: 720.7 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-11-12 18:47:31,077 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1089.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 201.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 724.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.44 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4533.54 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 192.4 MB). Peak memory consumption was 192.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204119.58 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 1.3 GB in the end (delta: 720.7 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 183]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 740. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown