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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label34_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 07:16:18,031 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 07:16:18,034 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 07:16:18,047 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 07:16:18,048 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 07:16:18,049 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 07:16:18,050 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 07:16:18,052 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 07:16:18,054 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 07:16:18,055 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 07:16:18,056 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 07:16:18,056 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 07:16:18,057 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 07:16:18,058 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 07:16:18,059 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 07:16:18,060 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 07:16:18,061 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 07:16:18,063 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 07:16:18,066 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 07:16:18,070 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 07:16:18,072 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 07:16:18,073 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 07:16:18,075 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 07:16:18,076 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 07:16:18,076 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 07:16:18,077 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 07:16:18,078 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 07:16:18,079 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 07:16:18,079 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 07:16:18,081 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 07:16:18,081 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 07:16:18,081 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 07:16:18,082 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 07:16:18,082 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 07:16:18,083 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 07:16:18,084 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 07:16:18,084 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 07:16:18,100 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 07:16:18,101 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 07:16:18,102 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 07:16:18,102 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 07:16:18,102 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 07:16:18,102 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 07:16:18,102 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 07:16:18,103 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 07:16:18,103 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 07:16:18,103 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 07:16:18,103 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 07:16:18,103 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 07:16:18,104 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 07:16:18,104 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 07:16:18,104 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 07:16:18,105 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 07:16:18,105 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 07:16:18,105 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 07:16:18,105 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 07:16:18,105 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 07:16:18,106 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 07:16:18,106 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 07:16:18,106 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 07:16:18,106 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 07:16:18,106 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 07:16:18,107 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 07:16:18,107 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 07:16:18,107 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 07:16:18,107 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 07:16:18,107 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 07:16:18,108 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 07:16:18,108 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 07:16:18,108 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 07:16:18,108 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 07:16:18,108 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 07:16:18,108 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 07:16:18,166 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 07:16:18,177 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 07:16:18,180 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 07:16:18,182 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 07:16:18,182 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 07:16:18,183 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label34_true-unreach-call.c [2018-11-07 07:16:18,249 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a63e6e665/8411909e089549e1a09fcc4feb3b7535/FLAG18bb15e18 [2018-11-07 07:16:18,933 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 07:16:18,935 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label34_true-unreach-call.c [2018-11-07 07:16:18,955 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a63e6e665/8411909e089549e1a09fcc4feb3b7535/FLAG18bb15e18 [2018-11-07 07:16:18,970 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a63e6e665/8411909e089549e1a09fcc4feb3b7535 [2018-11-07 07:16:18,982 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 07:16:18,983 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 07:16:18,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 07:16:18,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 07:16:18,992 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 07:16:18,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:16:18" (1/1) ... [2018-11-07 07:16:18,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c193a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:18, skipping insertion in model container [2018-11-07 07:16:18,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:16:18" (1/1) ... [2018-11-07 07:16:19,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 07:16:19,115 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 07:16:19,917 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 07:16:19,922 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 07:16:20,205 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 07:16:20,230 INFO L193 MainTranslator]: Completed translation [2018-11-07 07:16:20,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:20 WrapperNode [2018-11-07 07:16:20,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 07:16:20,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 07:16:20,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 07:16:20,232 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 07:16:20,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:20" (1/1) ... [2018-11-07 07:16:20,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:20" (1/1) ... [2018-11-07 07:16:20,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 07:16:20,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 07:16:20,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 07:16:20,453 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 07:16:20,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:20" (1/1) ... [2018-11-07 07:16:20,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:20" (1/1) ... [2018-11-07 07:16:20,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:20" (1/1) ... [2018-11-07 07:16:20,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:20" (1/1) ... [2018-11-07 07:16:20,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:20" (1/1) ... [2018-11-07 07:16:20,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:20" (1/1) ... [2018-11-07 07:16:20,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:20" (1/1) ... [2018-11-07 07:16:20,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 07:16:20,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 07:16:20,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 07:16:20,601 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 07:16:20,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:20" (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 07:16:20,682 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 07:16:20,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 07:16:20,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 07:16:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 07:16:20,683 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 07:16:20,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 07:16:20,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 07:16:20,684 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 07:16:20,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 07:16:25,514 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 07:16:25,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:16:25 BoogieIcfgContainer [2018-11-07 07:16:25,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 07:16:25,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 07:16:25,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 07:16:25,520 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 07:16:25,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:16:18" (1/3) ... [2018-11-07 07:16:25,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf7797e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:16:25, skipping insertion in model container [2018-11-07 07:16:25,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:16:20" (2/3) ... [2018-11-07 07:16:25,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf7797e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:16:25, skipping insertion in model container [2018-11-07 07:16:25,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:16:25" (3/3) ... [2018-11-07 07:16:25,527 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label34_true-unreach-call.c [2018-11-07 07:16:25,538 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 07:16:25,549 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 07:16:25,569 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 07:16:25,612 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 07:16:25,612 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 07:16:25,613 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 07:16:25,613 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 07:16:25,613 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 07:16:25,613 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 07:16:25,613 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 07:16:25,613 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 07:16:25,644 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 07:16:25,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-11-07 07:16:25,665 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:16:25,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:25,669 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:16:25,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:16:25,677 INFO L82 PathProgramCache]: Analyzing trace with hash 483318420, now seen corresponding path program 1 times [2018-11-07 07:16:25,680 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:16:25,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:25,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:16:25,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:25,743 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:16:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:16:26,772 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 07:16:27,061 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 07:16:27,063 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:16:27,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 07:16:27,063 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:16:27,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 07:16:27,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 07:16:27,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 07:16:27,086 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-11-07 07:16:30,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:16:30,593 INFO L93 Difference]: Finished difference Result 1074 states and 1924 transitions. [2018-11-07 07:16:30,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 07:16:30,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 197 [2018-11-07 07:16:30,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:16:30,622 INFO L225 Difference]: With dead ends: 1074 [2018-11-07 07:16:30,622 INFO L226 Difference]: Without dead ends: 756 [2018-11-07 07:16:30,631 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 07:16:30,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2018-11-07 07:16:30,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 520. [2018-11-07 07:16:30,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-11-07 07:16:30,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 919 transitions. [2018-11-07 07:16:30,732 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 919 transitions. Word has length 197 [2018-11-07 07:16:30,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:16:30,733 INFO L480 AbstractCegarLoop]: Abstraction has 520 states and 919 transitions. [2018-11-07 07:16:30,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 07:16:30,734 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 919 transitions. [2018-11-07 07:16:30,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-11-07 07:16:30,741 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:16:30,742 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:30,742 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:16:30,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:16:30,743 INFO L82 PathProgramCache]: Analyzing trace with hash 873411633, now seen corresponding path program 1 times [2018-11-07 07:16:30,743 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:16:30,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:30,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:16:30,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:30,745 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:16:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:16:31,075 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:16:31,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:16:31,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 07:16:31,075 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:16:31,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 07:16:31,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 07:16:31,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 07:16:31,079 INFO L87 Difference]: Start difference. First operand 520 states and 919 transitions. Second operand 6 states. [2018-11-07 07:16:34,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:16:34,326 INFO L93 Difference]: Finished difference Result 1482 states and 2700 transitions. [2018-11-07 07:16:34,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 07:16:34,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 225 [2018-11-07 07:16:34,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:16:34,341 INFO L225 Difference]: With dead ends: 1482 [2018-11-07 07:16:34,341 INFO L226 Difference]: Without dead ends: 968 [2018-11-07 07:16:34,349 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 07:16:34,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2018-11-07 07:16:34,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 949. [2018-11-07 07:16:34,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2018-11-07 07:16:34,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1579 transitions. [2018-11-07 07:16:34,419 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1579 transitions. Word has length 225 [2018-11-07 07:16:34,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:16:34,419 INFO L480 AbstractCegarLoop]: Abstraction has 949 states and 1579 transitions. [2018-11-07 07:16:34,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 07:16:34,419 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1579 transitions. [2018-11-07 07:16:34,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-11-07 07:16:34,425 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:16:34,425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:34,425 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:16:34,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:16:34,426 INFO L82 PathProgramCache]: Analyzing trace with hash -2108795236, now seen corresponding path program 1 times [2018-11-07 07:16:34,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:16:34,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:34,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:16:34,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:34,427 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:16:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:16:34,912 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 9 [2018-11-07 07:16:35,128 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:16:35,128 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:16:35,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 07:16:35,129 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:16:35,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 07:16:35,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 07:16:35,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 07:16:35,130 INFO L87 Difference]: Start difference. First operand 949 states and 1579 transitions. Second operand 6 states. [2018-11-07 07:16:38,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:16:38,635 INFO L93 Difference]: Finished difference Result 2438 states and 4009 transitions. [2018-11-07 07:16:38,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 07:16:38,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 243 [2018-11-07 07:16:38,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:16:38,653 INFO L225 Difference]: With dead ends: 2438 [2018-11-07 07:16:38,653 INFO L226 Difference]: Without dead ends: 1495 [2018-11-07 07:16:38,658 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 07:16:38,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2018-11-07 07:16:38,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1450. [2018-11-07 07:16:38,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1450 states. [2018-11-07 07:16:38,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2315 transitions. [2018-11-07 07:16:38,725 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2315 transitions. Word has length 243 [2018-11-07 07:16:38,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:16:38,725 INFO L480 AbstractCegarLoop]: Abstraction has 1450 states and 2315 transitions. [2018-11-07 07:16:38,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 07:16:38,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2315 transitions. [2018-11-07 07:16:38,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-11-07 07:16:38,733 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:16:38,733 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:38,734 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:16:38,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:16:38,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1365448965, now seen corresponding path program 1 times [2018-11-07 07:16:38,734 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:16:38,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:38,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:16:38,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:38,735 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:16:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:16:39,007 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 07:16:39,092 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 45 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 07:16:39,092 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:16:39,093 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:16:39,093 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 251 with the following transitions: [2018-11-07 07:16:39,096 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [71], [75], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1037], [1039], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:16:39,161 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:16:39,161 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:16:40,277 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:16:40,278 INFO L272 AbstractInterpreter]: Visited 198 different actions 198 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 07:16:40,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:16:40,324 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:16:41,481 INFO L227 lantSequenceWeakener]: Weakened 239 states. On average, predicates are now at 73.68% of their original sizes. [2018-11-07 07:16:41,482 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:16:42,063 INFO L415 sIntCurrentIteration]: We unified 249 AI predicates to 249 [2018-11-07 07:16:42,063 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:16:42,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:16:42,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-11-07 07:16:42,065 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:16:42,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 07:16:42,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 07:16:42,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-11-07 07:16:42,066 INFO L87 Difference]: Start difference. First operand 1450 states and 2315 transitions. Second operand 13 states. [2018-11-07 07:17:02,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:17:02,239 INFO L93 Difference]: Finished difference Result 3104 states and 4941 transitions. [2018-11-07 07:17:02,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 07:17:02,240 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 250 [2018-11-07 07:17:02,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:17:02,249 INFO L225 Difference]: With dead ends: 3104 [2018-11-07 07:17:02,249 INFO L226 Difference]: Without dead ends: 1660 [2018-11-07 07:17:02,254 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 250 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-11-07 07:17:02,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2018-11-07 07:17:02,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1658. [2018-11-07 07:17:02,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2018-11-07 07:17:02,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2533 transitions. [2018-11-07 07:17:02,303 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2533 transitions. Word has length 250 [2018-11-07 07:17:02,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:17:02,304 INFO L480 AbstractCegarLoop]: Abstraction has 1658 states and 2533 transitions. [2018-11-07 07:17:02,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-07 07:17:02,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2533 transitions. [2018-11-07 07:17:02,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-11-07 07:17:02,312 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:17:02,312 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:02,313 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:17:02,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:17:02,313 INFO L82 PathProgramCache]: Analyzing trace with hash -2002626232, now seen corresponding path program 1 times [2018-11-07 07:17:02,313 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:17:02,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:17:02,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:17:02,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:17:02,315 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:17:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:17:02,569 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 07:17:03,038 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 27 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-07 07:17:03,038 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:17:03,038 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:17:03,039 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-11-07 07:17:03,040 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [71], [75], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1037], [1039], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:17:03,050 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:17:03,051 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:17:03,925 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:17:03,926 INFO L272 AbstractInterpreter]: Visited 202 different actions 398 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 07:17:03,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:17:03,965 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:17:04,728 INFO L227 lantSequenceWeakener]: Weakened 257 states. On average, predicates are now at 74.03% of their original sizes. [2018-11-07 07:17:04,729 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:17:05,252 INFO L415 sIntCurrentIteration]: We unified 261 AI predicates to 261 [2018-11-07 07:17:05,253 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:17:05,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:17:05,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-07 07:17:05,253 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:17:05,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 07:17:05,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 07:17:05,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2018-11-07 07:17:05,255 INFO L87 Difference]: Start difference. First operand 1658 states and 2533 transitions. Second operand 20 states. [2018-11-07 07:17:31,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:17:31,992 INFO L93 Difference]: Finished difference Result 3316 states and 5163 transitions. [2018-11-07 07:17:31,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 07:17:31,992 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 262 [2018-11-07 07:17:31,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:17:32,001 INFO L225 Difference]: With dead ends: 3316 [2018-11-07 07:17:32,001 INFO L226 Difference]: Without dead ends: 1872 [2018-11-07 07:17:32,006 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 270 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=180, Invalid=632, Unknown=0, NotChecked=0, Total=812 [2018-11-07 07:17:32,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2018-11-07 07:17:32,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1869. [2018-11-07 07:17:32,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1869 states. [2018-11-07 07:17:32,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2759 transitions. [2018-11-07 07:17:32,056 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2759 transitions. Word has length 262 [2018-11-07 07:17:32,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:17:32,057 INFO L480 AbstractCegarLoop]: Abstraction has 1869 states and 2759 transitions. [2018-11-07 07:17:32,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 07:17:32,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2759 transitions. [2018-11-07 07:17:32,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-11-07 07:17:32,064 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:17:32,064 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:32,065 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:17:32,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:17:32,065 INFO L82 PathProgramCache]: Analyzing trace with hash -380211411, now seen corresponding path program 1 times [2018-11-07 07:17:32,065 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:17:32,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:17:32,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:17:32,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:17:32,067 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:17:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:17:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:17:32,564 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:17:32,564 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:17:32,564 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 266 with the following transitions: [2018-11-07 07:17:32,565 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1037], [1039], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:17:32,575 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:17:32,576 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:17:33,189 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:17:33,190 INFO L272 AbstractInterpreter]: Visited 201 different actions 395 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 07:17:33,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:17:33,209 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:17:33,807 INFO L227 lantSequenceWeakener]: Weakened 262 states. On average, predicates are now at 76.28% of their original sizes. [2018-11-07 07:17:33,807 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:17:34,042 INFO L415 sIntCurrentIteration]: We unified 264 AI predicates to 264 [2018-11-07 07:17:34,042 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:17:34,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:17:34,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-11-07 07:17:34,042 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:17:34,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 07:17:34,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 07:17:34,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-11-07 07:17:34,044 INFO L87 Difference]: Start difference. First operand 1869 states and 2759 transitions. Second operand 16 states. [2018-11-07 07:18:11,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:18:11,913 INFO L93 Difference]: Finished difference Result 4800 states and 7623 transitions. [2018-11-07 07:18:11,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 07:18:11,914 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 265 [2018-11-07 07:18:11,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:18:11,929 INFO L225 Difference]: With dead ends: 4800 [2018-11-07 07:18:11,929 INFO L226 Difference]: Without dead ends: 3356 [2018-11-07 07:18:11,937 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 273 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2018-11-07 07:18:11,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3356 states. [2018-11-07 07:18:12,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3356 to 3345. [2018-11-07 07:18:12,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3345 states. [2018-11-07 07:18:12,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3345 states to 3345 states and 4693 transitions. [2018-11-07 07:18:12,022 INFO L78 Accepts]: Start accepts. Automaton has 3345 states and 4693 transitions. Word has length 265 [2018-11-07 07:18:12,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:18:12,023 INFO L480 AbstractCegarLoop]: Abstraction has 3345 states and 4693 transitions. [2018-11-07 07:18:12,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 07:18:12,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3345 states and 4693 transitions. [2018-11-07 07:18:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-11-07 07:18:12,035 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:18:12,035 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:18:12,036 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:18:12,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:12,036 INFO L82 PathProgramCache]: Analyzing trace with hash -183086390, now seen corresponding path program 1 times [2018-11-07 07:18:12,036 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:18:12,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:12,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:12,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:12,038 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:18:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:12,326 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 07:18:12,695 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 77 proven. 35 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 07:18:12,695 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:18:12,695 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:18:12,695 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 278 with the following transitions: [2018-11-07 07:18:12,696 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1037], [1039], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:18:12,703 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:18:12,703 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:18:14,110 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:18:14,110 INFO L272 AbstractInterpreter]: Visited 203 different actions 812 times. Merged at 8 different actions 35 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 07:18:14,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:14,121 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:18:14,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:18:14,121 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 07:18:14,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:14,135 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:18:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:14,381 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:18:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-11-07 07:18:14,812 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:18:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 86 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-07 07:18:15,798 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:18:15,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-11-07 07:18:15,799 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:18:15,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 07:18:15,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 07:18:15,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-07 07:18:15,800 INFO L87 Difference]: Start difference. First operand 3345 states and 4693 transitions. Second operand 12 states. [2018-11-07 07:18:22,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:18:22,295 INFO L93 Difference]: Finished difference Result 9811 states and 14454 transitions. [2018-11-07 07:18:22,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-07 07:18:22,304 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 277 [2018-11-07 07:18:22,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:18:22,340 INFO L225 Difference]: With dead ends: 9811 [2018-11-07 07:18:22,340 INFO L226 Difference]: Without dead ends: 6472 [2018-11-07 07:18:22,362 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 576 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2018-11-07 07:18:22,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6472 states. [2018-11-07 07:18:22,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6472 to 6233. [2018-11-07 07:18:22,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6233 states. [2018-11-07 07:18:22,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6233 states to 6233 states and 8462 transitions. [2018-11-07 07:18:22,582 INFO L78 Accepts]: Start accepts. Automaton has 6233 states and 8462 transitions. Word has length 277 [2018-11-07 07:18:22,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:18:22,583 INFO L480 AbstractCegarLoop]: Abstraction has 6233 states and 8462 transitions. [2018-11-07 07:18:22,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 07:18:22,583 INFO L276 IsEmpty]: Start isEmpty. Operand 6233 states and 8462 transitions. [2018-11-07 07:18:22,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-11-07 07:18:22,612 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:18:22,612 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 07:18:22,612 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:18:22,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:22,613 INFO L82 PathProgramCache]: Analyzing trace with hash -103623477, now seen corresponding path program 1 times [2018-11-07 07:18:22,613 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:18:22,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:22,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:22,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:22,614 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:18:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:23,047 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:18:23,048 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:18:23,048 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:18:23,048 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 327 with the following transitions: [2018-11-07 07:18:23,049 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1037], [1039], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:18:23,054 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:18:23,054 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:18:24,544 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:18:24,544 INFO L272 AbstractInterpreter]: Visited 202 different actions 603 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 07:18:24,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:24,555 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:18:24,555 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:18:24,555 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 07:18:24,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:24,565 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:18:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:24,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:18:24,928 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:18:24,929 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:18:25,067 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:18:25,089 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:18:25,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-11-07 07:18:25,090 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:18:25,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 07:18:25,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 07:18:25,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-07 07:18:25,092 INFO L87 Difference]: Start difference. First operand 6233 states and 8462 transitions. Second operand 7 states. [2018-11-07 07:18:28,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:18:28,383 INFO L93 Difference]: Finished difference Result 21040 states and 33098 transitions. [2018-11-07 07:18:28,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 07:18:28,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 326 [2018-11-07 07:18:28,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:18:28,503 INFO L225 Difference]: With dead ends: 21040 [2018-11-07 07:18:28,503 INFO L226 Difference]: Without dead ends: 15234 [2018-11-07 07:18:28,816 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 661 GetRequests, 651 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-11-07 07:18:28,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15234 states. [2018-11-07 07:18:29,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15234 to 14350. [2018-11-07 07:18:29,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14350 states. [2018-11-07 07:18:29,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14350 states to 14350 states and 19786 transitions. [2018-11-07 07:18:29,361 INFO L78 Accepts]: Start accepts. Automaton has 14350 states and 19786 transitions. Word has length 326 [2018-11-07 07:18:29,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:18:29,362 INFO L480 AbstractCegarLoop]: Abstraction has 14350 states and 19786 transitions. [2018-11-07 07:18:29,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 07:18:29,362 INFO L276 IsEmpty]: Start isEmpty. Operand 14350 states and 19786 transitions. [2018-11-07 07:18:29,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-11-07 07:18:29,420 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:18:29,421 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 07:18:29,421 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:18:29,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:29,422 INFO L82 PathProgramCache]: Analyzing trace with hash -254506040, now seen corresponding path program 1 times [2018-11-07 07:18:29,422 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:18:29,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:29,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:29,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:29,423 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:18:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:29,985 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 141 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-11-07 07:18:29,986 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:18:29,986 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:18:29,986 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-11-07 07:18:29,987 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1037], [1039], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:18:29,992 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:18:29,992 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:18:31,420 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:18:31,420 INFO L272 AbstractInterpreter]: Visited 205 different actions 611 times. Merged at 8 different actions 24 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 07:18:31,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:31,456 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:18:31,456 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:18:31,456 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 07:18:31,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:31,470 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:18:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:31,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:18:31,930 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 07:18:31,931 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:18:32,311 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 07:18:32,342 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:18:32,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2018-11-07 07:18:32,343 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:18:32,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 07:18:32,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 07:18:32,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-07 07:18:32,344 INFO L87 Difference]: Start difference. First operand 14350 states and 19786 transitions. Second operand 8 states. [2018-11-07 07:18:39,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:18:39,105 INFO L93 Difference]: Finished difference Result 47082 states and 79127 transitions. [2018-11-07 07:18:39,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-07 07:18:39,105 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 337 [2018-11-07 07:18:39,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:18:39,311 INFO L225 Difference]: With dead ends: 47082 [2018-11-07 07:18:39,311 INFO L226 Difference]: Without dead ends: 33159 [2018-11-07 07:18:39,398 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 695 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=1011, Unknown=0, NotChecked=0, Total=1260 [2018-11-07 07:18:39,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33159 states. [2018-11-07 07:18:40,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33159 to 30759. [2018-11-07 07:18:40,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30759 states. [2018-11-07 07:18:40,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30759 states to 30759 states and 41335 transitions. [2018-11-07 07:18:40,825 INFO L78 Accepts]: Start accepts. Automaton has 30759 states and 41335 transitions. Word has length 337 [2018-11-07 07:18:40,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:18:40,826 INFO L480 AbstractCegarLoop]: Abstraction has 30759 states and 41335 transitions. [2018-11-07 07:18:40,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 07:18:40,826 INFO L276 IsEmpty]: Start isEmpty. Operand 30759 states and 41335 transitions. [2018-11-07 07:18:40,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-11-07 07:18:40,944 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:18:40,944 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 07:18:40,944 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:18:40,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:40,945 INFO L82 PathProgramCache]: Analyzing trace with hash 452709010, now seen corresponding path program 1 times [2018-11-07 07:18:40,945 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:18:40,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:40,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:40,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:40,948 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:18:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:41,275 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 4 [2018-11-07 07:18:41,692 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 156 proven. 63 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-07 07:18:41,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:18:41,693 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:18:41,693 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 357 with the following transitions: [2018-11-07 07:18:41,693 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [52], [53], [57], [61], [65], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1037], [1039], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:18:41,698 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:18:41,699 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:18:42,837 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:18:42,838 INFO L272 AbstractInterpreter]: Visited 205 different actions 610 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 07:18:42,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:42,845 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:18:42,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:18:42,845 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 07:18:42,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:42,855 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:18:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:43,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:18:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-11-07 07:18:43,357 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:18:43,960 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-11-07 07:18:43,999 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 07:18:43,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [10, 4] total 12 [2018-11-07 07:18:44,000 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:18:44,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 07:18:44,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 07:18:44,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-11-07 07:18:44,001 INFO L87 Difference]: Start difference. First operand 30759 states and 41335 transitions. Second operand 3 states. [2018-11-07 07:18:45,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:18:45,385 INFO L93 Difference]: Finished difference Result 54831 states and 73553 transitions. [2018-11-07 07:18:45,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 07:18:45,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 356 [2018-11-07 07:18:45,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:18:45,495 INFO L225 Difference]: With dead ends: 54831 [2018-11-07 07:18:45,495 INFO L226 Difference]: Without dead ends: 30753 [2018-11-07 07:18:45,559 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-11-07 07:18:45,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30753 states. [2018-11-07 07:18:46,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30753 to 30753. [2018-11-07 07:18:46,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30753 states. [2018-11-07 07:18:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30753 states to 30753 states and 41319 transitions. [2018-11-07 07:18:46,628 INFO L78 Accepts]: Start accepts. Automaton has 30753 states and 41319 transitions. Word has length 356 [2018-11-07 07:18:46,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:18:46,628 INFO L480 AbstractCegarLoop]: Abstraction has 30753 states and 41319 transitions. [2018-11-07 07:18:46,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 07:18:46,629 INFO L276 IsEmpty]: Start isEmpty. Operand 30753 states and 41319 transitions. [2018-11-07 07:18:46,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-11-07 07:18:46,688 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:18:46,688 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-07 07:18:46,689 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:18:46,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:46,689 INFO L82 PathProgramCache]: Analyzing trace with hash 646872235, now seen corresponding path program 1 times [2018-11-07 07:18:46,689 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:18:46,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:46,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:46,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:46,690 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:18:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:47,358 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 183 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:18:47,359 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:18:47,359 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:18:47,359 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 364 with the following transitions: [2018-11-07 07:18:47,359 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [616], [621], [623], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1037], [1039], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:18:47,363 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:18:47,364 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:18:48,261 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:18:48,261 INFO L272 AbstractInterpreter]: Visited 203 different actions 603 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 07:18:48,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:48,266 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:18:48,266 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:18:48,266 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 07:18:48,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:48,275 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:18:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:48,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:18:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-11-07 07:18:48,608 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:18:48,768 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-11-07 07:18:48,790 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:18:48,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 11 [2018-11-07 07:18:48,791 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:18:48,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 07:18:48,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 07:18:48,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-11-07 07:18:48,792 INFO L87 Difference]: Start difference. First operand 30753 states and 41319 transitions. Second operand 3 states. [2018-11-07 07:18:51,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:18:51,007 INFO L93 Difference]: Finished difference Result 83885 states and 115023 transitions. [2018-11-07 07:18:51,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 07:18:51,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 363 [2018-11-07 07:18:51,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:18:51,201 INFO L225 Difference]: With dead ends: 83885 [2018-11-07 07:18:51,202 INFO L226 Difference]: Without dead ends: 53559 [2018-11-07 07:18:51,287 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 724 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-11-07 07:18:51,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53559 states. [2018-11-07 07:18:52,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53559 to 52900. [2018-11-07 07:18:52,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52900 states. [2018-11-07 07:18:52,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52900 states to 52900 states and 69440 transitions. [2018-11-07 07:18:52,788 INFO L78 Accepts]: Start accepts. Automaton has 52900 states and 69440 transitions. Word has length 363 [2018-11-07 07:18:52,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:18:52,789 INFO L480 AbstractCegarLoop]: Abstraction has 52900 states and 69440 transitions. [2018-11-07 07:18:52,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 07:18:52,789 INFO L276 IsEmpty]: Start isEmpty. Operand 52900 states and 69440 transitions. [2018-11-07 07:18:52,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-11-07 07:18:52,862 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:18:52,862 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 07:18:52,862 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:18:52,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:52,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1651871702, now seen corresponding path program 1 times [2018-11-07 07:18:52,863 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:18:52,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:52,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:52,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:52,864 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:18:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:53,316 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 163 proven. 73 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 07:18:53,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:18:53,317 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:18:53,317 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 364 with the following transitions: [2018-11-07 07:18:53,317 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [52], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1037], [1039], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:18:53,322 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:18:53,322 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:18:53,868 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:18:53,868 INFO L272 AbstractInterpreter]: Visited 202 different actions 398 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 07:18:53,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:53,870 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:18:54,534 INFO L227 lantSequenceWeakener]: Weakened 360 states. On average, predicates are now at 74.01% of their original sizes. [2018-11-07 07:18:54,534 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:18:54,819 INFO L415 sIntCurrentIteration]: We unified 362 AI predicates to 362 [2018-11-07 07:18:54,819 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:18:54,819 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:18:54,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [10] total 28 [2018-11-07 07:18:54,820 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:18:54,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 07:18:54,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 07:18:54,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2018-11-07 07:18:54,821 INFO L87 Difference]: Start difference. First operand 52900 states and 69440 transitions. Second operand 20 states. [2018-11-07 07:19:30,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:19:30,051 INFO L93 Difference]: Finished difference Result 112182 states and 148035 transitions. [2018-11-07 07:19:30,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 07:19:30,051 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 363 [2018-11-07 07:19:30,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:19:30,265 INFO L225 Difference]: With dead ends: 112182 [2018-11-07 07:19:30,265 INFO L226 Difference]: Without dead ends: 59709 [2018-11-07 07:19:30,386 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 370 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2018-11-07 07:19:30,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59709 states. [2018-11-07 07:19:31,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59709 to 59706. [2018-11-07 07:19:31,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59706 states. [2018-11-07 07:19:31,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59706 states to 59706 states and 77908 transitions. [2018-11-07 07:19:31,796 INFO L78 Accepts]: Start accepts. Automaton has 59706 states and 77908 transitions. Word has length 363 [2018-11-07 07:19:31,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:19:31,796 INFO L480 AbstractCegarLoop]: Abstraction has 59706 states and 77908 transitions. [2018-11-07 07:19:31,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 07:19:31,796 INFO L276 IsEmpty]: Start isEmpty. Operand 59706 states and 77908 transitions. [2018-11-07 07:19:31,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-11-07 07:19:31,893 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:19:31,893 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 07:19:31,893 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:19:31,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:19:31,894 INFO L82 PathProgramCache]: Analyzing trace with hash 150618695, now seen corresponding path program 1 times [2018-11-07 07:19:31,894 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:19:31,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:19:31,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:19:31,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:19:31,895 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:19:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:19:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 177 proven. 80 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-11-07 07:19:32,801 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:19:32,801 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:19:32,802 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 376 with the following transitions: [2018-11-07 07:19:32,802 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [52], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1037], [1039], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:19:32,806 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:19:32,806 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:19:33,974 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:19:33,975 INFO L272 AbstractInterpreter]: Visited 204 different actions 814 times. Merged at 8 different actions 33 times. Never widened. Found 7 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 07:19:33,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:19:33,981 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:19:33,981 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:19:33,981 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 07:19:33,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:19:33,991 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:19:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:19:34,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:19:34,349 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-11-07 07:19:34,349 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:19:34,579 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 186 proven. 61 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-11-07 07:19:34,600 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:19:34,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-11-07 07:19:34,601 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:19:34,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 07:19:34,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 07:19:34,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-11-07 07:19:34,602 INFO L87 Difference]: Start difference. First operand 59706 states and 77908 transitions. Second operand 12 states. [2018-11-07 07:19:46,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:19:46,404 INFO L93 Difference]: Finished difference Result 183036 states and 249885 transitions. [2018-11-07 07:19:46,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-07 07:19:46,405 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 375 [2018-11-07 07:19:46,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:19:46,837 INFO L225 Difference]: With dead ends: 183036 [2018-11-07 07:19:46,837 INFO L226 Difference]: Without dead ends: 123754 [2018-11-07 07:19:47,000 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 780 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=477, Invalid=1779, Unknown=0, NotChecked=0, Total=2256 [2018-11-07 07:19:47,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123754 states. [2018-11-07 07:19:49,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123754 to 123300. [2018-11-07 07:19:49,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123300 states. [2018-11-07 07:19:50,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123300 states to 123300 states and 162652 transitions. [2018-11-07 07:19:50,352 INFO L78 Accepts]: Start accepts. Automaton has 123300 states and 162652 transitions. Word has length 375 [2018-11-07 07:19:50,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:19:50,352 INFO L480 AbstractCegarLoop]: Abstraction has 123300 states and 162652 transitions. [2018-11-07 07:19:50,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 07:19:50,352 INFO L276 IsEmpty]: Start isEmpty. Operand 123300 states and 162652 transitions. [2018-11-07 07:19:50,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-11-07 07:19:50,471 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:19:50,471 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 07:19:50,472 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:19:50,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:19:50,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1217262826, now seen corresponding path program 1 times [2018-11-07 07:19:50,472 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:19:50,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:19:50,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:19:50,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:19:50,473 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:19:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:19:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:19:50,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:19:50,874 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:19:50,874 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 381 with the following transitions: [2018-11-07 07:19:50,874 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [600], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1037], [1039], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:19:50,879 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:19:50,879 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:19:52,304 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:19:52,304 INFO L272 AbstractInterpreter]: Visited 203 different actions 813 times. Merged at 8 different actions 36 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 07:19:52,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:19:52,313 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:19:52,313 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:19:52,313 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 07:19:52,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:19:52,324 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:19:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:19:52,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:19:53,370 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-11-07 07:19:53,370 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:19:53,535 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-11-07 07:19:53,556 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:19:53,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-11-07 07:19:53,556 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:19:53,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 07:19:53,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 07:19:53,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-07 07:19:53,558 INFO L87 Difference]: Start difference. First operand 123300 states and 162652 transitions. Second operand 3 states. [2018-11-07 07:19:56,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:19:56,632 INFO L93 Difference]: Finished difference Result 209560 states and 277298 transitions. [2018-11-07 07:19:56,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 07:19:56,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 380 [2018-11-07 07:19:56,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:19:57,075 INFO L225 Difference]: With dead ends: 209560 [2018-11-07 07:19:57,075 INFO L226 Difference]: Without dead ends: 117147 [2018-11-07 07:19:57,302 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 758 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-07 07:19:57,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117147 states. [2018-11-07 07:20:00,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117147 to 116977. [2018-11-07 07:20:00,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116977 states. [2018-11-07 07:20:00,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116977 states to 116977 states and 149809 transitions. [2018-11-07 07:20:00,433 INFO L78 Accepts]: Start accepts. Automaton has 116977 states and 149809 transitions. Word has length 380 [2018-11-07 07:20:00,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:20:00,434 INFO L480 AbstractCegarLoop]: Abstraction has 116977 states and 149809 transitions. [2018-11-07 07:20:00,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 07:20:00,434 INFO L276 IsEmpty]: Start isEmpty. Operand 116977 states and 149809 transitions. [2018-11-07 07:20:00,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-11-07 07:20:00,537 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:20:00,537 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 07:20:00,537 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:20:00,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:20:00,537 INFO L82 PathProgramCache]: Analyzing trace with hash -2024057203, now seen corresponding path program 1 times [2018-11-07 07:20:00,537 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:20:00,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:20:00,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:20:00,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:20:00,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:20:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:20:01,341 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 202 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:20:01,342 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:20:01,342 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:20:01,342 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 384 with the following transitions: [2018-11-07 07:20:01,342 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [543], [548], [550], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1037], [1039], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:20:01,347 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:20:01,347 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-07 07:20:01,561 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 07:20:01,562 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 07:20:01,562 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 07:20:01,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:20:01,562 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 07:20:01,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:20:01,573 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:20:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:20:01,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:20:01,836 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 07:20:02,037 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 07:20:02,038 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 07:20:02,043 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 07:20:02,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:20:02 BoogieIcfgContainer [2018-11-07 07:20:02,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 07:20:02,045 INFO L168 Benchmark]: Toolchain (without parser) took 223062.34 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.8 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -751.4 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-07 07:20:02,046 INFO L168 Benchmark]: CDTParser took 0.19 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 07:20:02,046 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1246.43 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 07:20:02,047 INFO L168 Benchmark]: Boogie Procedure Inliner took 220.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -868.8 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. [2018-11-07 07:20:02,048 INFO L168 Benchmark]: Boogie Preprocessor took 147.76 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 07:20:02,048 INFO L168 Benchmark]: RCFGBuilder took 4914.77 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: 271.3 MB). Peak memory consumption was 271.3 MB. Max. memory is 7.1 GB. [2018-11-07 07:20:02,049 INFO L168 Benchmark]: TraceAbstraction took 216527.72 ms. Allocated memory was 2.3 GB in the beginning and 4.4 GB in the end (delta: 2.1 GB). Free memory was 1.9 GB in the beginning and 2.2 GB in the end (delta: -238.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 07:20:02,054 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1246.43 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 220.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -868.8 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.76 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4914.77 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: 271.3 MB). Peak memory consumption was 271.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216527.72 ms. Allocated memory was 2.3 GB in the beginning and 4.4 GB in the end (delta: 2.1 GB). Free memory was 1.9 GB in the beginning and 2.2 GB in the end (delta: -238.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1605]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1605). Cancelled while BasicCegarLoop was analyzing trace of length 384 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 9 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 216.4s OverallTime, 15 OverallIterations, 5 TraceHistogramMax, 168.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3215 SDtfs, 23027 SDslu, 6137 SDs, 0 SdLazy, 33688 SolverSat, 6000 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 86.9s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 6249 GetRequests, 5978 SyntacticMatches, 14 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1709 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123300occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.6s AbstIntTime, 12 AbstIntIterations, 4 AbstIntStrong, 0.9990757839197836 AbsIntWeakeningRatio, 0.2438380281690141 AbsIntAvgWeakeningVarsNumRemoved, 57.786091549295776 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 13.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 5125 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 10.5s InterpolantComputationTime, 6633 NumberOfCodeBlocks, 6633 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 9019 ConstructedInterpolants, 0 QuantifiedInterpolants, 7932455 SizeOfPredicates, 7 NumberOfNonLiveVariables, 9391 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 28 InterpolantComputations, 8 PerfectInterpolantSequences, 4336/4741 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown