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/Problem13_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:01:22,973 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:01:22,976 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:01:22,992 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:01:22,993 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:01:22,994 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:01:22,996 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:01:22,999 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:01:23,001 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:01:23,003 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:01:23,004 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:01:23,006 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:01:23,007 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:01:23,010 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:01:23,018 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:01:23,019 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:01:23,020 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:01:23,023 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:01:23,025 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:01:23,028 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:01:23,030 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:01:23,032 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:01:23,036 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:01:23,037 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:01:23,037 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:01:23,038 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:01:23,039 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:01:23,040 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:01:23,040 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:01:23,041 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:01:23,041 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:01:23,042 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:01:23,042 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:01:23,043 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:01:23,043 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:01:23,044 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:01:23,044 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 19:01:23,068 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:01:23,068 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:01:23,069 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:01:23,069 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:01:23,070 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:01:23,070 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:01:23,070 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:01:23,070 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:01:23,070 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:01:23,071 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:01:23,071 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:01:23,071 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:01:23,071 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:01:23,072 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:01:23,072 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:01:23,072 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:01:23,072 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:01:23,073 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:01:23,073 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:01:23,073 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:01:23,073 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:01:23,073 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:01:23,074 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:01:23,074 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:01:23,074 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:01:23,074 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:01:23,074 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:01:23,075 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:01:23,075 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:01:23,075 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:01:23,075 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:01:23,075 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:01:23,075 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:01:23,076 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:01:23,076 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:01:23,125 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:01:23,138 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:01:23,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:01:23,143 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:01:23,143 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:01:23,144 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label57_true-unreach-call.c [2018-11-12 19:01:23,215 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec36aef6/2e1ab9d1791c496c842a963ac9d230fe/FLAGaf6a07653 [2018-11-12 19:01:23,957 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:01:23,958 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label57_true-unreach-call.c [2018-11-12 19:01:23,999 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec36aef6/2e1ab9d1791c496c842a963ac9d230fe/FLAGaf6a07653 [2018-11-12 19:01:24,021 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec36aef6/2e1ab9d1791c496c842a963ac9d230fe [2018-11-12 19:01:24,034 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:01:24,036 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:01:24,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:01:24,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:01:24,043 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:01:24,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:01:24" (1/1) ... [2018-11-12 19:01:24,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fcc55be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:01:24, skipping insertion in model container [2018-11-12 19:01:24,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:01:24" (1/1) ... [2018-11-12 19:01:24,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:01:24,247 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:01:25,828 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:01:25,839 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:01:26,596 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:01:26,642 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:01:26,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:01:26 WrapperNode [2018-11-12 19:01:26,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:01:26,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:01:26,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:01:26,645 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:01:26,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:01:26" (1/1) ... [2018-11-12 19:01:27,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:01:26" (1/1) ... [2018-11-12 19:01:27,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:01:27,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:01:27,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:01:27,050 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:01:27,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:01:26" (1/1) ... [2018-11-12 19:01:27,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:01:26" (1/1) ... [2018-11-12 19:01:27,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:01:26" (1/1) ... [2018-11-12 19:01:27,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:01:26" (1/1) ... [2018-11-12 19:01:27,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:01:26" (1/1) ... [2018-11-12 19:01:27,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:01:26" (1/1) ... [2018-11-12 19:01:27,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:01:26" (1/1) ... [2018-11-12 19:01:27,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:01:27,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:01:27,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:01:27,301 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:01:27,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:01:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:01:27,372 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:01:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:01:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:01:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 19:01:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 19:01:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 19:01:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 19:01:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:01:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:01:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:01:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:01:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:01:27,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:01:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:01:27,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:01:40,079 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:01:40,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:01:40 BoogieIcfgContainer [2018-11-12 19:01:40,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:01:40,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:01:40,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:01:40,085 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:01:40,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:01:24" (1/3) ... [2018-11-12 19:01:40,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458d95a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:01:40, skipping insertion in model container [2018-11-12 19:01:40,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:01:26" (2/3) ... [2018-11-12 19:01:40,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458d95a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:01:40, skipping insertion in model container [2018-11-12 19:01:40,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:01:40" (3/3) ... [2018-11-12 19:01:40,089 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label57_true-unreach-call.c [2018-11-12 19:01:40,100 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:01:40,111 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:01:40,130 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:01:40,196 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:01:40,196 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:01:40,197 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:01:40,197 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:01:40,197 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:01:40,197 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:01:40,197 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:01:40,197 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:01:40,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-12 19:01:40,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-12 19:01:40,282 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:01:40,283 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] [2018-11-12 19:01:40,286 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:01:40,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:01:40,295 INFO L82 PathProgramCache]: Analyzing trace with hash -143907844, now seen corresponding path program 1 times [2018-11-12 19:01:40,298 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:01:40,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:01:40,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:01:40,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:01:40,362 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:01:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:01:40,869 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:01:40,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:01:40,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:01:40,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:01:40,990 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:01:40,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:01:41,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:01:41,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:01:41,018 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-12 19:01:50,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:01:50,003 INFO L93 Difference]: Finished difference Result 3087 states and 5699 transitions. [2018-11-12 19:01:50,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:01:50,005 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2018-11-12 19:01:50,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:01:50,043 INFO L225 Difference]: With dead ends: 3087 [2018-11-12 19:01:50,043 INFO L226 Difference]: Without dead ends: 1965 [2018-11-12 19:01:50,057 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:01:50,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2018-11-12 19:01:50,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1959. [2018-11-12 19:01:50,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-11-12 19:01:50,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3512 transitions. [2018-11-12 19:01:50,203 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3512 transitions. Word has length 68 [2018-11-12 19:01:50,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:01:50,204 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3512 transitions. [2018-11-12 19:01:50,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:01:50,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3512 transitions. [2018-11-12 19:01:50,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-12 19:01:50,213 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:01:50,213 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, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:01:50,214 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:01:50,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:01:50,214 INFO L82 PathProgramCache]: Analyzing trace with hash 484004430, now seen corresponding path program 1 times [2018-11-12 19:01:50,214 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:01:50,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:01:50,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:01:50,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:01:50,216 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:01:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:01:50,595 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:01:50,756 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:01:50,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:01:50,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:01:50,757 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:01:50,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:01:50,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:01:50,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:01:50,760 INFO L87 Difference]: Start difference. First operand 1959 states and 3512 transitions. Second operand 6 states. [2018-11-12 19:02:05,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:02:05,962 INFO L93 Difference]: Finished difference Result 7204 states and 13315 transitions. [2018-11-12 19:02:05,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:02:05,967 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-11-12 19:02:05,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:02:06,008 INFO L225 Difference]: With dead ends: 7204 [2018-11-12 19:02:06,008 INFO L226 Difference]: Without dead ends: 5251 [2018-11-12 19:02:06,021 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:02:06,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5251 states. [2018-11-12 19:02:06,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5251 to 5221. [2018-11-12 19:02:06,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5221 states. [2018-11-12 19:02:06,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5221 states to 5221 states and 8297 transitions. [2018-11-12 19:02:06,171 INFO L78 Accepts]: Start accepts. Automaton has 5221 states and 8297 transitions. Word has length 145 [2018-11-12 19:02:06,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:02:06,172 INFO L480 AbstractCegarLoop]: Abstraction has 5221 states and 8297 transitions. [2018-11-12 19:02:06,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:02:06,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5221 states and 8297 transitions. [2018-11-12 19:02:06,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-12 19:02:06,177 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:02:06,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:02:06,178 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:02:06,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:02:06,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1149053844, now seen corresponding path program 1 times [2018-11-12 19:02:06,179 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:02:06,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:02:06,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:02:06,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:02:06,180 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:02:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:02:06,489 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:02:06,490 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:02:06,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:02:06,490 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:02:06,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:02:06,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:02:06,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:02:06,492 INFO L87 Difference]: Start difference. First operand 5221 states and 8297 transitions. Second operand 6 states. [2018-11-12 19:02:17,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:02:17,069 INFO L93 Difference]: Finished difference Result 13943 states and 22202 transitions. [2018-11-12 19:02:17,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:02:17,074 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-11-12 19:02:17,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:02:17,129 INFO L225 Difference]: With dead ends: 13943 [2018-11-12 19:02:17,130 INFO L226 Difference]: Without dead ends: 8728 [2018-11-12 19:02:17,154 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:02:17,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8728 states. [2018-11-12 19:02:17,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8728 to 8651. [2018-11-12 19:02:17,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8651 states. [2018-11-12 19:02:17,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8651 states to 8651 states and 12559 transitions. [2018-11-12 19:02:17,443 INFO L78 Accepts]: Start accepts. Automaton has 8651 states and 12559 transitions. Word has length 176 [2018-11-12 19:02:17,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:02:17,444 INFO L480 AbstractCegarLoop]: Abstraction has 8651 states and 12559 transitions. [2018-11-12 19:02:17,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:02:17,445 INFO L276 IsEmpty]: Start isEmpty. Operand 8651 states and 12559 transitions. [2018-11-12 19:02:17,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-11-12 19:02:17,452 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:02:17,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:02:17,453 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:02:17,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:02:17,454 INFO L82 PathProgramCache]: Analyzing trace with hash -492046690, now seen corresponding path program 1 times [2018-11-12 19:02:17,454 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:02:17,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:02:17,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:02:17,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:02:17,455 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:02:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:02:17,820 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 122 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:02:17,821 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:02:17,821 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:02:17,822 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 222 with the following transitions: [2018-11-12 19:02:17,824 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3067], [3071], [3073], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3155], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 19:02:17,876 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:02:17,876 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:02:18,524 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:02:18,526 INFO L272 AbstractInterpreter]: Visited 82 different actions 82 times. Never merged. Never widened. Performed 1574 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1574 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Never found a fixpoint. Largest state had 26 variables. [2018-11-12 19:02:18,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:02:18,546 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:02:19,360 INFO L227 lantSequenceWeakener]: Weakened 199 states. On average, predicates are now at 71.99% of their original sizes. [2018-11-12 19:02:19,360 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:02:19,823 INFO L415 sIntCurrentIteration]: We unified 220 AI predicates to 220 [2018-11-12 19:02:19,823 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:02:19,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:02:19,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-11-12 19:02:19,824 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:02:19,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 19:02:19,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 19:02:19,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:02:19,826 INFO L87 Difference]: Start difference. First operand 8651 states and 12559 transitions. Second operand 10 states. [2018-11-12 19:02:31,135 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:03:23,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:03:23,872 INFO L93 Difference]: Finished difference Result 18105 states and 26242 transitions. [2018-11-12 19:03:23,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 19:03:23,872 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 221 [2018-11-12 19:03:23,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:03:23,920 INFO L225 Difference]: With dead ends: 18105 [2018-11-12 19:03:23,920 INFO L226 Difference]: Without dead ends: 9460 [2018-11-12 19:03:23,945 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 224 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-12 19:03:23,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9460 states. [2018-11-12 19:03:24,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9460 to 9455. [2018-11-12 19:03:24,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9455 states. [2018-11-12 19:03:24,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9455 states to 9455 states and 13373 transitions. [2018-11-12 19:03:24,168 INFO L78 Accepts]: Start accepts. Automaton has 9455 states and 13373 transitions. Word has length 221 [2018-11-12 19:03:24,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:03:24,170 INFO L480 AbstractCegarLoop]: Abstraction has 9455 states and 13373 transitions. [2018-11-12 19:03:24,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 19:03:24,170 INFO L276 IsEmpty]: Start isEmpty. Operand 9455 states and 13373 transitions. [2018-11-12 19:03:24,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-11-12 19:03:24,181 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:03:24,181 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:03:24,183 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:03:24,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:03:24,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1740249327, now seen corresponding path program 1 times [2018-11-12 19:03:24,184 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:03:24,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:03:24,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:03:24,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:03:24,186 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:03:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:03:24,559 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:03:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 123 proven. 9 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 19:03:24,755 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:03:24,755 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:03:24,755 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 276 with the following transitions: [2018-11-12 19:03:24,756 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3067], [3071], [3073], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3155], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3409], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 19:03:24,762 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:03:24,762 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:03:36,615 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:03:36,616 INFO L272 AbstractInterpreter]: Visited 138 different actions 401 times. Merged at 5 different actions 9 times. Never widened. Performed 7018 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7018 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 19:03:36,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:03:36,643 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:03:37,231 INFO L227 lantSequenceWeakener]: Weakened 272 states. On average, predicates are now at 71.52% of their original sizes. [2018-11-12 19:03:37,236 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:03:38,143 INFO L415 sIntCurrentIteration]: We unified 274 AI predicates to 274 [2018-11-12 19:03:38,143 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:03:38,144 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:03:38,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 19:03:38,144 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:03:38,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 19:03:38,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 19:03:38,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 19:03:38,145 INFO L87 Difference]: Start difference. First operand 9455 states and 13373 transitions. Second operand 11 states. [2018-11-12 19:03:44,625 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.