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/Problem15_label36_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:45:42,029 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:45:42,031 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:45:42,044 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:45:42,044 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:45:42,045 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:45:42,047 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:45:42,048 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:45:42,050 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:45:42,051 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:45:42,052 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:45:42,052 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:45:42,053 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:45:42,054 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:45:42,056 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:45:42,057 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:45:42,058 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:45:42,059 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:45:42,061 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:45:42,063 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:45:42,064 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:45:42,066 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:45:42,068 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:45:42,068 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:45:42,069 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:45:42,070 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:45:42,071 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:45:42,072 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:45:42,073 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:45:42,074 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:45:42,074 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:45:42,075 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:45:42,075 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:45:42,075 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:45:42,076 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:45:42,077 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:45:42,077 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 20:45:42,093 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:45:42,093 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:45:42,094 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:45:42,094 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:45:42,094 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:45:42,095 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:45:42,095 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:45:42,095 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:45:42,095 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:45:42,095 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:45:42,096 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:45:42,096 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:45:42,096 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:45:42,097 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:45:42,097 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:45:42,097 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:45:42,097 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:45:42,098 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:45:42,098 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:45:42,098 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:45:42,098 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:45:42,098 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:45:42,099 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:45:42,099 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:45:42,099 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:45:42,099 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:45:42,100 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:45:42,100 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:45:42,100 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:45:42,100 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:45:42,100 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:45:42,101 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:45:42,101 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:45:42,101 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:45:42,101 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:45:42,145 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:45:42,158 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:45:42,162 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:45:42,164 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:45:42,164 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:45:42,165 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label36_true-unreach-call.c [2018-11-07 20:45:42,232 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05df73374/8e42f180c59640a2a1ab2fe1bbf1a7b5/FLAG4d8314ea3 [2018-11-07 20:45:42,938 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:45:42,939 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label36_true-unreach-call.c [2018-11-07 20:45:42,965 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05df73374/8e42f180c59640a2a1ab2fe1bbf1a7b5/FLAG4d8314ea3 [2018-11-07 20:45:42,981 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05df73374/8e42f180c59640a2a1ab2fe1bbf1a7b5 [2018-11-07 20:45:42,992 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:45:42,994 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:45:42,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:45:42,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:45:43,001 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:45:43,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:45:42" (1/1) ... [2018-11-07 20:45:43,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afe51a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:43, skipping insertion in model container [2018-11-07 20:45:43,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:45:42" (1/1) ... [2018-11-07 20:45:43,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:45:43,106 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:45:43,917 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:45:43,922 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:45:44,295 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:45:44,318 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:45:44,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:44 WrapperNode [2018-11-07 20:45:44,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:45:44,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:45:44,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:45:44,321 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:45:44,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:44" (1/1) ... [2018-11-07 20:45:44,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:44" (1/1) ... [2018-11-07 20:45:44,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:45:44,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:45:44,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:45:44,556 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:45:44,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:44" (1/1) ... [2018-11-07 20:45:44,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:44" (1/1) ... [2018-11-07 20:45:44,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:44" (1/1) ... [2018-11-07 20:45:44,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:44" (1/1) ... [2018-11-07 20:45:44,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:44" (1/1) ... [2018-11-07 20:45:44,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:44" (1/1) ... [2018-11-07 20:45:44,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:44" (1/1) ... [2018-11-07 20:45:44,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:45:44,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:45:44,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:45:44,752 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:45:44,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:45:44,823 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:45:44,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:45:44,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:45:44,824 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:45:44,824 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:45:44,824 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:45:44,824 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:45:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:45:44,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:45:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:45:44,825 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:45:51,059 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:45:51,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:45:51 BoogieIcfgContainer [2018-11-07 20:45:51,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:45:51,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:45:51,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:45:51,067 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:45:51,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:45:42" (1/3) ... [2018-11-07 20:45:51,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486f17d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:45:51, skipping insertion in model container [2018-11-07 20:45:51,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:45:44" (2/3) ... [2018-11-07 20:45:51,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486f17d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:45:51, skipping insertion in model container [2018-11-07 20:45:51,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:45:51" (3/3) ... [2018-11-07 20:45:51,072 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label36_true-unreach-call.c [2018-11-07 20:45:51,083 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:45:51,093 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:45:51,110 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:45:51,153 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:45:51,153 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:45:51,153 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:45:51,153 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:45:51,154 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:45:51,154 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:45:51,154 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:45:51,154 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:45:51,188 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 20:45:51,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-07 20:45:51,199 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:45:51,200 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, 1, 1] [2018-11-07 20:45:51,203 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:45:51,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:45:51,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1645176452, now seen corresponding path program 1 times [2018-11-07 20:45:51,212 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:45:51,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:51,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:45:51,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:51,273 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:45:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:45:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:45:51,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:45:51,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:45:51,818 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:45:51,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:45:51,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:45:51,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:45:51,843 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 20:45:58,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:45:58,107 INFO L93 Difference]: Finished difference Result 1510 states and 2773 transitions. [2018-11-07 20:45:58,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:45:58,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2018-11-07 20:45:58,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:45:58,137 INFO L225 Difference]: With dead ends: 1510 [2018-11-07 20:45:58,138 INFO L226 Difference]: Without dead ends: 1066 [2018-11-07 20:45:58,155 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:45:58,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2018-11-07 20:45:58,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1064. [2018-11-07 20:45:58,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2018-11-07 20:45:58,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1590 transitions. [2018-11-07 20:45:58,329 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1590 transitions. Word has length 68 [2018-11-07 20:45:58,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:45:58,330 INFO L480 AbstractCegarLoop]: Abstraction has 1064 states and 1590 transitions. [2018-11-07 20:45:58,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:45:58,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1590 transitions. [2018-11-07 20:45:58,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-07 20:45:58,343 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:45:58,344 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:45:58,344 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:45:58,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:45:58,346 INFO L82 PathProgramCache]: Analyzing trace with hash 880545895, now seen corresponding path program 1 times [2018-11-07 20:45:58,346 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:45:58,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:58,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:45:58,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:58,348 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:45:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:45:58,666 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:45:58,666 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:45:58,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:45:58,667 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:45:58,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:45:58,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:45:58,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:45:58,670 INFO L87 Difference]: Start difference. First operand 1064 states and 1590 transitions. Second operand 4 states. [2018-11-07 20:46:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:46:04,377 INFO L93 Difference]: Finished difference Result 3981 states and 6113 transitions. [2018-11-07 20:46:04,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:46:04,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2018-11-07 20:46:04,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:46:04,411 INFO L225 Difference]: With dead ends: 3981 [2018-11-07 20:46:04,411 INFO L226 Difference]: Without dead ends: 2923 [2018-11-07 20:46:04,421 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:46:04,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2018-11-07 20:46:04,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2921. [2018-11-07 20:46:04,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2921 states. [2018-11-07 20:46:04,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2921 states to 2921 states and 4008 transitions. [2018-11-07 20:46:04,545 INFO L78 Accepts]: Start accepts. Automaton has 2921 states and 4008 transitions. Word has length 138 [2018-11-07 20:46:04,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:46:04,546 INFO L480 AbstractCegarLoop]: Abstraction has 2921 states and 4008 transitions. [2018-11-07 20:46:04,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:46:04,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2921 states and 4008 transitions. [2018-11-07 20:46:04,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-11-07 20:46:04,554 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:46:04,554 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:46:04,554 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:46:04,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:04,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1873397843, now seen corresponding path program 1 times [2018-11-07 20:46:04,555 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:46:04,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:04,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:46:04,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:04,557 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:46:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:46:05,108 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 123 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 20:46:05,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:46:05,109 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:46:05,110 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 249 with the following transitions: [2018-11-07 20:46:05,113 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [517], [519], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:46:05,183 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:46:05,183 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:46:05,676 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:46:07,142 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:46:07,144 INFO L272 AbstractInterpreter]: Visited 104 different actions 692 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:46:07,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:07,189 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:46:08,123 INFO L227 lantSequenceWeakener]: Weakened 34 states. On average, predicates are now at 78.21% of their original sizes. [2018-11-07 20:46:08,125 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:46:11,722 INFO L415 sIntCurrentIteration]: We unified 247 AI predicates to 247 [2018-11-07 20:46:11,722 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:46:11,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:46:11,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-07 20:46:11,725 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:46:11,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 20:46:11,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 20:46:11,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2018-11-07 20:46:11,727 INFO L87 Difference]: Start difference. First operand 2921 states and 4008 transitions. Second operand 18 states. [2018-11-07 20:47:00,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:47:00,451 INFO L93 Difference]: Finished difference Result 8543 states and 11170 transitions. [2018-11-07 20:47:00,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-07 20:47:00,451 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 248 [2018-11-07 20:47:00,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:47:00,479 INFO L225 Difference]: With dead ends: 8543 [2018-11-07 20:47:00,480 INFO L226 Difference]: Without dead ends: 5628 [2018-11-07 20:47:00,496 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 258 GetRequests, 177 SyntacticMatches, 54 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2018-11-07 20:47:00,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5628 states. [2018-11-07 20:47:00,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5628 to 5120. [2018-11-07 20:47:00,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5120 states. [2018-11-07 20:47:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5120 states to 5120 states and 6302 transitions. [2018-11-07 20:47:00,632 INFO L78 Accepts]: Start accepts. Automaton has 5120 states and 6302 transitions. Word has length 248 [2018-11-07 20:47:00,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:47:00,632 INFO L480 AbstractCegarLoop]: Abstraction has 5120 states and 6302 transitions. [2018-11-07 20:47:00,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 20:47:00,633 INFO L276 IsEmpty]: Start isEmpty. Operand 5120 states and 6302 transitions. [2018-11-07 20:47:00,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2018-11-07 20:47:00,648 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:47:00,649 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, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:47:00,649 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:47:00,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:00,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1824846397, now seen corresponding path program 1 times [2018-11-07 20:47:00,650 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:47:00,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:00,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:47:00,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:00,651 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:47:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:47:01,535 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 185 proven. 4 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-11-07 20:47:01,535 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:47:01,536 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:47:01,536 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 498 with the following transitions: [2018-11-07 20:47:01,538 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [517], [519], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:47:01,552 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:47:01,552 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:47:01,594 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:47:02,204 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:47:02,204 INFO L272 AbstractInterpreter]: Visited 284 different actions 851 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 20:47:02,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:02,211 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:47:02,795 INFO L227 lantSequenceWeakener]: Weakened 494 states. On average, predicates are now at 80.49% of their original sizes. [2018-11-07 20:47:02,795 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:47:02,950 INFO L415 sIntCurrentIteration]: We unified 496 AI predicates to 496 [2018-11-07 20:47:02,950 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:47:02,951 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:47:02,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-11-07 20:47:02,951 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:47:02,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:47:02,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:47:02,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:47:02,953 INFO L87 Difference]: Start difference. First operand 5120 states and 6302 transitions. Second operand 10 states. [2018-11-07 20:47:34,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:47:34,484 INFO L93 Difference]: Finished difference Result 10229 states and 12852 transitions. [2018-11-07 20:47:34,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 20:47:34,484 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 497 [2018-11-07 20:47:34,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:47:34,519 INFO L225 Difference]: With dead ends: 10229 [2018-11-07 20:47:34,520 INFO L226 Difference]: Without dead ends: 7314 [2018-11-07 20:47:34,535 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 503 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-07 20:47:34,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7314 states. [2018-11-07 20:47:34,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7314 to 7304. [2018-11-07 20:47:34,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7304 states. [2018-11-07 20:47:34,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7304 states to 7304 states and 8637 transitions. [2018-11-07 20:47:34,702 INFO L78 Accepts]: Start accepts. Automaton has 7304 states and 8637 transitions. Word has length 497 [2018-11-07 20:47:34,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:47:34,704 INFO L480 AbstractCegarLoop]: Abstraction has 7304 states and 8637 transitions. [2018-11-07 20:47:34,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 20:47:34,704 INFO L276 IsEmpty]: Start isEmpty. Operand 7304 states and 8637 transitions. [2018-11-07 20:47:34,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2018-11-07 20:47:34,726 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:47:34,727 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, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:47:34,727 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:47:34,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:34,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1447195982, now seen corresponding path program 1 times [2018-11-07 20:47:34,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:47:34,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:34,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:47:34,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:34,729 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:47:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:47:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 350 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 20:47:35,424 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:47:35,424 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:47:35,424 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 539 with the following transitions: [2018-11-07 20:47:35,425 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [517], [519], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:47:35,432 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:47:35,432 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:47:35,594 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:47:37,375 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:47:37,375 INFO L272 AbstractInterpreter]: Visited 285 different actions 1703 times. Merged at 8 different actions 51 times. Widened at 1 different actions 2 times. Found 10 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 20:47:37,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:37,381 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:47:37,381 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:47:37,381 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:47:37,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:47:37,391 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:47:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:47:37,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:47:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 350 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 20:47:38,114 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:47:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 350 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 20:47:38,826 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:47:38,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 20:47:38,826 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:47:38,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 20:47:38,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 20:47:38,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:47:38,828 INFO L87 Difference]: Start difference. First operand 7304 states and 8637 transitions. Second operand 9 states. [2018-11-07 20:47:47,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:47:47,335 INFO L93 Difference]: Finished difference Result 15753 states and 20060 transitions. [2018-11-07 20:47:47,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 20:47:47,335 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 538 [2018-11-07 20:47:47,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:47:47,390 INFO L225 Difference]: With dead ends: 15753 [2018-11-07 20:47:47,391 INFO L226 Difference]: Without dead ends: 11895 [2018-11-07 20:47:47,420 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1105 GetRequests, 1083 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2018-11-07 20:47:47,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11895 states. [2018-11-07 20:47:47,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11895 to 11503. [2018-11-07 20:47:47,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11503 states. [2018-11-07 20:47:47,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11503 states to 11503 states and 13419 transitions. [2018-11-07 20:47:47,712 INFO L78 Accepts]: Start accepts. Automaton has 11503 states and 13419 transitions. Word has length 538 [2018-11-07 20:47:47,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:47:47,714 INFO L480 AbstractCegarLoop]: Abstraction has 11503 states and 13419 transitions. [2018-11-07 20:47:47,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 20:47:47,714 INFO L276 IsEmpty]: Start isEmpty. Operand 11503 states and 13419 transitions. [2018-11-07 20:47:47,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2018-11-07 20:47:47,742 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:47:47,743 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:47:47,744 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:47:47,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:47,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1482004606, now seen corresponding path program 1 times [2018-11-07 20:47:47,744 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:47:47,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:47,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:47:47,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:47,746 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:47:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:47:49,050 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 185 proven. 4 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-11-07 20:47:49,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:47:49,051 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:47:49,051 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 576 with the following transitions: [2018-11-07 20:47:49,051 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [517], [519], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [962], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:47:49,060 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:47:49,061 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:47:49,134 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:47:50,292 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:47:50,293 INFO L272 AbstractInterpreter]: Visited 284 different actions 851 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 20:47:50,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:50,329 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:47:51,199 INFO L227 lantSequenceWeakener]: Weakened 572 states. On average, predicates are now at 83.75% of their original sizes. [2018-11-07 20:47:51,199 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:47:51,977 INFO L415 sIntCurrentIteration]: We unified 574 AI predicates to 574 [2018-11-07 20:47:51,977 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:47:51,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:47:51,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-11-07 20:47:51,978 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:47:51,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:47:51,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:47:51,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:47:51,979 INFO L87 Difference]: Start difference. First operand 11503 states and 13419 transitions. Second operand 10 states. [2018-11-07 20:48:16,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:48:16,060 INFO L93 Difference]: Finished difference Result 19659 states and 23623 transitions. [2018-11-07 20:48:16,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 20:48:16,061 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 575 [2018-11-07 20:48:16,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:48:16,098 INFO L225 Difference]: With dead ends: 19659 [2018-11-07 20:48:16,099 INFO L226 Difference]: Without dead ends: 13357 [2018-11-07 20:48:16,118 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 581 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-07 20:48:16,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13357 states. [2018-11-07 20:48:16,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13357 to 13005. [2018-11-07 20:48:16,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13005 states. [2018-11-07 20:48:16,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13005 states to 13005 states and 15034 transitions. [2018-11-07 20:48:16,347 INFO L78 Accepts]: Start accepts. Automaton has 13005 states and 15034 transitions. Word has length 575 [2018-11-07 20:48:16,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:48:16,348 INFO L480 AbstractCegarLoop]: Abstraction has 13005 states and 15034 transitions. [2018-11-07 20:48:16,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 20:48:16,348 INFO L276 IsEmpty]: Start isEmpty. Operand 13005 states and 15034 transitions. [2018-11-07 20:48:16,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2018-11-07 20:48:16,379 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:48:16,379 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:48:16,380 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:48:16,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:48:16,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1954697654, now seen corresponding path program 1 times [2018-11-07 20:48:16,380 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:48:16,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:16,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:48:16,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:16,382 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:48:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:48:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-07 20:48:17,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:48:17,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:48:17,604 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:48:17,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:48:17,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:48:17,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:48:17,605 INFO L87 Difference]: Start difference. First operand 13005 states and 15034 transitions. Second operand 3 states. [2018-11-07 20:48:19,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:48:19,835 INFO L93 Difference]: Finished difference Result 19612 states and 23563 transitions. [2018-11-07 20:48:19,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:48:19,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 584 [2018-11-07 20:48:19,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:48:19,878 INFO L225 Difference]: With dead ends: 19612 [2018-11-07 20:48:19,879 INFO L226 Difference]: Without dead ends: 13312 [2018-11-07 20:48:19,900 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 [2018-11-07 20:48:19,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13312 states. [2018-11-07 20:48:20,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13312 to 13004. [2018-11-07 20:48:20,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13004 states. [2018-11-07 20:48:20,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13004 states to 13004 states and 15037 transitions. [2018-11-07 20:48:20,115 INFO L78 Accepts]: Start accepts. Automaton has 13004 states and 15037 transitions. Word has length 584 [2018-11-07 20:48:20,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:48:20,116 INFO L480 AbstractCegarLoop]: Abstraction has 13004 states and 15037 transitions. [2018-11-07 20:48:20,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:48:20,116 INFO L276 IsEmpty]: Start isEmpty. Operand 13004 states and 15037 transitions. [2018-11-07 20:48:20,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2018-11-07 20:48:20,148 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:48:20,148 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:48:20,149 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:48:20,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:48:20,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1466159039, now seen corresponding path program 1 times [2018-11-07 20:48:20,149 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:48:20,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:20,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:48:20,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:20,151 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:48:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:48:20,826 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 486 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-07 20:48:20,826 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:48:20,826 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:48:20,827 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 610 with the following transitions: [2018-11-07 20:48:20,827 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [517], [519], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:48:20,832 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:48:20,833 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:48:20,880 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:48:23,040 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:48:23,040 INFO L272 AbstractInterpreter]: Visited 286 different actions 1705 times. Merged at 9 different actions 48 times. Widened at 1 different actions 1 times. Found 14 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 20:48:23,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:48:23,050 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:48:23,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:48:23,050 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:48:23,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:48:23,062 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:48:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:48:23,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:48:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 486 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-07 20:48:23,445 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:48:23,845 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 486 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-07 20:48:23,867 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:48:23,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2018-11-07 20:48:23,868 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:48:23,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:48:23,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:48:23,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 20:48:23,870 INFO L87 Difference]: Start difference. First operand 13004 states and 15037 transitions. Second operand 6 states. [2018-11-07 20:48:27,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:48:27,013 INFO L93 Difference]: Finished difference Result 23828 states and 29563 transitions. [2018-11-07 20:48:27,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 20:48:27,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 609 [2018-11-07 20:48:27,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:48:27,071 INFO L225 Difference]: With dead ends: 23828 [2018-11-07 20:48:27,071 INFO L226 Difference]: Without dead ends: 17529 [2018-11-07 20:48:27,093 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1230 GetRequests, 1219 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:48:27,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17529 states. [2018-11-07 20:48:27,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17529 to 16214. [2018-11-07 20:48:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16214 states. [2018-11-07 20:48:27,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16214 states to 16214 states and 18858 transitions. [2018-11-07 20:48:27,625 INFO L78 Accepts]: Start accepts. Automaton has 16214 states and 18858 transitions. Word has length 609 [2018-11-07 20:48:27,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:48:27,626 INFO L480 AbstractCegarLoop]: Abstraction has 16214 states and 18858 transitions. [2018-11-07 20:48:27,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:48:27,626 INFO L276 IsEmpty]: Start isEmpty. Operand 16214 states and 18858 transitions. [2018-11-07 20:48:27,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2018-11-07 20:48:27,657 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:48:27,657 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:48:27,660 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:48:27,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:48:27,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1096908630, now seen corresponding path program 1 times [2018-11-07 20:48:27,661 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:48:27,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:27,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:48:27,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:27,662 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:48:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:48:28,146 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 20:48:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2018-11-07 20:48:28,313 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:48:28,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:48:28,313 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:48:28,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:48:28,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:48:28,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:48:28,315 INFO L87 Difference]: Start difference. First operand 16214 states and 18858 transitions. Second operand 4 states. [2018-11-07 20:48:32,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:48:32,222 INFO L93 Difference]: Finished difference Result 37225 states and 45512 transitions. [2018-11-07 20:48:32,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:48:32,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 630 [2018-11-07 20:48:32,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:48:32,281 INFO L225 Difference]: With dead ends: 37225 [2018-11-07 20:48:32,281 INFO L226 Difference]: Without dead ends: 16566 [2018-11-07 20:48:32,343 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:48:32,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16566 states. [2018-11-07 20:48:32,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16566 to 16538. [2018-11-07 20:48:32,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16538 states. [2018-11-07 20:48:32,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16538 states to 16538 states and 18716 transitions. [2018-11-07 20:48:32,596 INFO L78 Accepts]: Start accepts. Automaton has 16538 states and 18716 transitions. Word has length 630 [2018-11-07 20:48:32,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:48:32,597 INFO L480 AbstractCegarLoop]: Abstraction has 16538 states and 18716 transitions. [2018-11-07 20:48:32,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:48:32,597 INFO L276 IsEmpty]: Start isEmpty. Operand 16538 states and 18716 transitions. [2018-11-07 20:48:32,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2018-11-07 20:48:32,645 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:48:32,646 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:48:32,646 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:48:32,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:48:32,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1404658461, now seen corresponding path program 1 times [2018-11-07 20:48:32,647 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:48:32,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:32,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:48:32,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:32,648 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:48:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:48:33,712 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 569 proven. 2 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-11-07 20:48:33,712 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:48:33,712 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:48:33,713 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 669 with the following transitions: [2018-11-07 20:48:33,713 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [517], [519], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [660], [663], [667], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [790], [793], [797], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:48:33,719 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:48:33,719 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:48:34,057 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:48:34,899 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:48:34,899 INFO L272 AbstractInterpreter]: Visited 285 different actions 1127 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:48:34,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:48:34,910 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:48:35,482 INFO L227 lantSequenceWeakener]: Weakened 661 states. On average, predicates are now at 80.32% of their original sizes. [2018-11-07 20:48:35,482 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:48:35,613 INFO L415 sIntCurrentIteration]: We unified 667 AI predicates to 667 [2018-11-07 20:48:35,613 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:48:35,613 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:48:35,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 20:48:35,613 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:48:35,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:48:35,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:48:35,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:48:35,615 INFO L87 Difference]: Start difference. First operand 16538 states and 18716 transitions. Second operand 11 states. [2018-11-07 20:48:58,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:48:58,922 INFO L93 Difference]: Finished difference Result 36486 states and 41946 transitions. [2018-11-07 20:48:58,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 20:48:58,923 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 668 [2018-11-07 20:48:58,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:48:58,977 INFO L225 Difference]: With dead ends: 36486 [2018-11-07 20:48:58,978 INFO L226 Difference]: Without dead ends: 21540 [2018-11-07 20:48:59,007 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 679 GetRequests, 658 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2018-11-07 20:48:59,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21540 states. [2018-11-07 20:48:59,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21540 to 21496. [2018-11-07 20:48:59,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21496 states. [2018-11-07 20:48:59,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21496 states to 21496 states and 24429 transitions. [2018-11-07 20:48:59,346 INFO L78 Accepts]: Start accepts. Automaton has 21496 states and 24429 transitions. Word has length 668 [2018-11-07 20:48:59,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:48:59,347 INFO L480 AbstractCegarLoop]: Abstraction has 21496 states and 24429 transitions. [2018-11-07 20:48:59,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 20:48:59,348 INFO L276 IsEmpty]: Start isEmpty. Operand 21496 states and 24429 transitions. [2018-11-07 20:48:59,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2018-11-07 20:48:59,368 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:48:59,369 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:48:59,369 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:48:59,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:48:59,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1824650404, now seen corresponding path program 1 times [2018-11-07 20:48:59,370 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:48:59,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:59,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:48:59,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:59,371 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:48:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:49:00,182 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2018-11-07 20:49:00,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:49:00,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:49:00,183 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:49:00,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:49:00,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:49:00,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:49:00,185 INFO L87 Difference]: Start difference. First operand 21496 states and 24429 transitions. Second operand 3 states. [2018-11-07 20:49:03,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:49:03,002 INFO L93 Difference]: Finished difference Result 56451 states and 65859 transitions. [2018-11-07 20:49:03,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:49:03,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 679 [2018-11-07 20:49:03,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:49:03,123 INFO L225 Difference]: With dead ends: 56451 [2018-11-07 20:49:03,124 INFO L226 Difference]: Without dead ends: 37167 [2018-11-07 20:49:03,207 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:49:03,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37167 states. Received shutdown request... [2018-11-07 20:49:09,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37167 to 37152. [2018-11-07 20:49:09,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37152 states. [2018-11-07 20:49:09,723 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:49:09,729 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:49:09,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:49:09 BoogieIcfgContainer [2018-11-07 20:49:09,729 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:49:09,730 INFO L168 Benchmark]: Toolchain (without parser) took 206737.70 ms. Allocated memory was 1.5 GB in the beginning and 5.6 GB in the end (delta: 4.1 GB). Free memory was 1.4 GB in the beginning and 4.5 GB in the end (delta: -3.1 GB). Peak memory consumption was 4.8 GB. Max. memory is 7.1 GB. [2018-11-07 20:49:09,731 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:49:09,732 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1325.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-07 20:49:09,732 INFO L168 Benchmark]: Boogie Procedure Inliner took 235.24 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -880.8 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2018-11-07 20:49:09,733 INFO L168 Benchmark]: Boogie Preprocessor took 195.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-11-07 20:49:09,734 INFO L168 Benchmark]: RCFGBuilder took 6311.21 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 287.3 MB). Peak memory consumption was 287.3 MB. Max. memory is 7.1 GB. [2018-11-07 20:49:09,735 INFO L168 Benchmark]: TraceAbstraction took 198666.00 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.4 GB). Free memory was 1.9 GB in the beginning and 4.5 GB in the end (delta: -2.7 GB). Peak memory consumption was 4.6 GB. Max. memory is 7.1 GB. [2018-11-07 20:49:09,740 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1325.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 235.24 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -880.8 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 195.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6311.21 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 287.3 MB). Peak memory consumption was 287.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 198666.00 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.4 GB). Free memory was 1.9 GB in the beginning and 4.5 GB in the end (delta: -2.7 GB). Peak memory consumption was 4.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 190]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 190). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 198.5s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 161.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4242 SDtfs, 20179 SDslu, 3606 SDs, 0 SdLazy, 29851 SolverSat, 5025 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 72.4s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 4380 GetRequests, 4206 SyntacticMatches, 59 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21496occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.4s AbstIntTime, 6 AbstIntIterations, 4 AbstIntStrong, 0.9978918133916272 AbsIntWeakeningRatio, 0.0655241935483871 AbsIntAvgWeakeningVarsNumRemoved, 18.869959677419356 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 2961 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 6381 NumberOfCodeBlocks, 6381 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 7513 ConstructedInterpolants, 0 QuantifiedInterpolants, 7755170 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1633 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 7466/7565 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown