java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-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_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 00:09:31,054 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 00:09:31,057 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 00:09:31,069 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 00:09:31,070 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 00:09:31,071 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 00:09:31,072 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 00:09:31,074 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 00:09:31,076 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 00:09:31,077 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 00:09:31,077 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 00:09:31,078 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 00:09:31,079 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 00:09:31,080 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 00:09:31,081 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 00:09:31,082 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 00:09:31,082 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 00:09:31,084 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 00:09:31,087 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 00:09:31,088 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 00:09:31,090 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 00:09:31,091 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 00:09:31,093 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 00:09:31,094 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 00:09:31,094 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 00:09:31,095 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 00:09:31,096 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 00:09:31,097 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 00:09:31,097 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 00:09:31,099 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 00:09:31,099 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 00:09:31,100 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-25 00:09:31,101 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-25 00:09:31,102 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-25 00:09:31,103 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-25 00:09:31,103 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-25 00:09:31,104 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 00:09:31,123 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 00:09:31,123 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 00:09:31,124 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 00:09:31,124 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 00:09:31,124 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 00:09:31,125 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 00:09:31,125 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 00:09:31,125 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 00:09:31,125 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 00:09:31,125 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 00:09:31,126 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 00:09:31,126 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 00:09:31,126 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 00:09:31,126 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 00:09:31,127 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 00:09:31,127 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 00:09:31,127 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 00:09:31,127 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 00:09:31,128 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 00:09:31,128 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 00:09:31,128 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 00:09:31,128 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 00:09:31,128 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 00:09:31,129 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 00:09:31,129 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 00:09:31,129 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 00:09:31,129 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:09:31,129 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 00:09:31,130 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 00:09:31,130 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 00:09:31,130 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 00:09:31,130 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 00:09:31,130 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 00:09:31,130 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 00:09:31,131 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 00:09:31,131 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 00:09:31,177 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 00:09:31,193 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 00:09:31,197 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 00:09:31,199 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 00:09:31,199 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 00:09:31,201 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label05_true-unreach-call.c [2018-10-25 00:09:31,255 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b53b410cb/5375e0933edf42c89bfa546d3fce62f4/FLAGc496644cb [2018-10-25 00:09:31,911 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 00:09:31,914 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label05_true-unreach-call.c [2018-10-25 00:09:31,935 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b53b410cb/5375e0933edf42c89bfa546d3fce62f4/FLAGc496644cb [2018-10-25 00:09:31,957 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b53b410cb/5375e0933edf42c89bfa546d3fce62f4 [2018-10-25 00:09:31,969 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 00:09:31,971 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 00:09:31,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 00:09:31,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 00:09:31,981 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 00:09:31,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:09:31" (1/1) ... [2018-10-25 00:09:31,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7472627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:31, skipping insertion in model container [2018-10-25 00:09:31,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:09:31" (1/1) ... [2018-10-25 00:09:31,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 00:09:32,082 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 00:09:32,787 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:09:32,800 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 00:09:33,069 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:09:33,095 INFO L193 MainTranslator]: Completed translation [2018-10-25 00:09:33,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:33 WrapperNode [2018-10-25 00:09:33,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 00:09:33,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 00:09:33,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 00:09:33,097 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 00:09:33,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:33" (1/1) ... [2018-10-25 00:09:33,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:33" (1/1) ... [2018-10-25 00:09:33,415 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 00:09:33,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 00:09:33,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 00:09:33,416 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 00:09:33,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:33" (1/1) ... [2018-10-25 00:09:33,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:33" (1/1) ... [2018-10-25 00:09:33,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:33" (1/1) ... [2018-10-25 00:09:33,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:33" (1/1) ... [2018-10-25 00:09:33,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:33" (1/1) ... [2018-10-25 00:09:33,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:33" (1/1) ... [2018-10-25 00:09:33,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:33" (1/1) ... [2018-10-25 00:09:33,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 00:09:33,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 00:09:33,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 00:09:33,574 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 00:09:33,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 00:09:33,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 00:09:33,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 00:09:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 00:09:33,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 00:09:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 00:09:33,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 00:09:33,650 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 00:09:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 00:09:38,454 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 00:09:38,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:09:38 BoogieIcfgContainer [2018-10-25 00:09:38,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 00:09:38,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 00:09:38,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 00:09:38,464 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 00:09:38,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 12:09:31" (1/3) ... [2018-10-25 00:09:38,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2fb7a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:09:38, skipping insertion in model container [2018-10-25 00:09:38,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:33" (2/3) ... [2018-10-25 00:09:38,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2fb7a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:09:38, skipping insertion in model container [2018-10-25 00:09:38,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:09:38" (3/3) ... [2018-10-25 00:09:38,469 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label05_true-unreach-call.c [2018-10-25 00:09:38,481 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 00:09:38,497 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 00:09:38,516 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 00:09:38,572 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 00:09:38,572 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 00:09:38,572 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 00:09:38,573 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 00:09:38,573 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 00:09:38,573 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 00:09:38,573 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 00:09:38,573 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 00:09:38,621 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-25 00:09:38,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-25 00:09:38,649 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:09:38,650 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] [2018-10-25 00:09:38,655 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:09:38,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:09:38,663 INFO L82 PathProgramCache]: Analyzing trace with hash -49135596, now seen corresponding path program 1 times [2018-10-25 00:09:38,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:09:38,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:38,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:09:38,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:38,731 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:09:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:09:39,664 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:09:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:09:39,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:09:39,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:09:39,898 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:09:39,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:09:39,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:09:39,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:09:39,930 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-25 00:09:42,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:09:42,372 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-10-25 00:09:42,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:09:42,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2018-10-25 00:09:42,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:09:42,396 INFO L225 Difference]: With dead ends: 838 [2018-10-25 00:09:42,396 INFO L226 Difference]: Without dead ends: 524 [2018-10-25 00:09:42,404 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:09:42,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-10-25 00:09:42,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-10-25 00:09:42,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-10-25 00:09:42,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-10-25 00:09:42,544 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 165 [2018-10-25 00:09:42,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:09:42,547 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-10-25 00:09:42,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:09:42,547 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-10-25 00:09:42,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-25 00:09:42,564 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:09:42,565 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-25 00:09:42,565 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:09:42,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:09:42,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1507813107, now seen corresponding path program 1 times [2018-10-25 00:09:42,569 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:09:42,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:42,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:09:42,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:42,573 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:09:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:09:42,903 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-25 00:09:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:09:43,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:09:43,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:09:43,128 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:09:43,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:09:43,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:09:43,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:09:43,131 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-10-25 00:09:47,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:09:47,279 INFO L93 Difference]: Finished difference Result 1581 states and 2759 transitions. [2018-10-25 00:09:47,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-25 00:09:47,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2018-10-25 00:09:47,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:09:47,300 INFO L225 Difference]: With dead ends: 1581 [2018-10-25 00:09:47,300 INFO L226 Difference]: Without dead ends: 1065 [2018-10-25 00:09:47,311 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 00:09:47,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2018-10-25 00:09:47,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1023. [2018-10-25 00:09:47,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-25 00:09:47,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1733 transitions. [2018-10-25 00:09:47,398 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1733 transitions. Word has length 175 [2018-10-25 00:09:47,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:09:47,399 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1733 transitions. [2018-10-25 00:09:47,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:09:47,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1733 transitions. [2018-10-25 00:09:47,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-25 00:09:47,404 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:09:47,404 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-25 00:09:47,404 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:09:47,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:09:47,405 INFO L82 PathProgramCache]: Analyzing trace with hash -2079958768, now seen corresponding path program 1 times [2018-10-25 00:09:47,405 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:09:47,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:47,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:09:47,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:47,407 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:09:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:09:47,713 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:09:47,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:09:47,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:09:47,714 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:09:47,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:09:47,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:09:47,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:09:47,716 INFO L87 Difference]: Start difference. First operand 1023 states and 1733 transitions. Second operand 3 states. [2018-10-25 00:09:50,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:09:50,811 INFO L93 Difference]: Finished difference Result 2887 states and 5063 transitions. [2018-10-25 00:09:50,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:09:50,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2018-10-25 00:09:50,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:09:50,833 INFO L225 Difference]: With dead ends: 2887 [2018-10-25 00:09:50,834 INFO L226 Difference]: Without dead ends: 1870 [2018-10-25 00:09:50,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:09:50,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2018-10-25 00:09:50,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1865. [2018-10-25 00:09:50,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2018-10-25 00:09:50,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 3055 transitions. [2018-10-25 00:09:50,911 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 3055 transitions. Word has length 178 [2018-10-25 00:09:50,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:09:50,912 INFO L481 AbstractCegarLoop]: Abstraction has 1865 states and 3055 transitions. [2018-10-25 00:09:50,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:09:50,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 3055 transitions. [2018-10-25 00:09:50,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-25 00:09:50,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:09:50,921 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:09:50,921 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:09:50,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:09:50,922 INFO L82 PathProgramCache]: Analyzing trace with hash -267064481, now seen corresponding path program 1 times [2018-10-25 00:09:50,922 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:09:50,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:50,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:09:50,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:50,923 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:09:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:09:51,398 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-25 00:09:51,559 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:09:51,560 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:09:51,560 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:09:51,561 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 199 with the following transitions: [2018-10-25 00:09:51,564 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], [96], [100], [104], [108], [112], [115], [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], [781], [783], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:09:51,636 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:09:51,637 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:09:53,061 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:09:53,063 INFO L272 AbstractInterpreter]: Visited 165 different actions 165 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-25 00:09:53,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:09:53,106 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:09:54,173 INFO L232 lantSequenceWeakener]: Weakened 192 states. On average, predicates are now at 71.14% of their original sizes. [2018-10-25 00:09:54,174 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:09:54,810 INFO L413 sIntCurrentIteration]: We have 197 unified AI predicates [2018-10-25 00:09:54,810 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:09:54,811 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:09:54,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 18 [2018-10-25 00:09:54,812 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:09:54,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-25 00:09:54,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-25 00:09:54,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-10-25 00:09:54,813 INFO L87 Difference]: Start difference. First operand 1865 states and 3055 transitions. Second operand 13 states. [2018-10-25 00:11:03,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:11:03,900 INFO L93 Difference]: Finished difference Result 3934 states and 6464 transitions. [2018-10-25 00:11:03,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:11:03,901 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 198 [2018-10-25 00:11:03,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:11:03,914 INFO L225 Difference]: With dead ends: 3934 [2018-10-25 00:11:03,914 INFO L226 Difference]: Without dead ends: 2075 [2018-10-25 00:11:03,920 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 198 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:11:03,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2018-10-25 00:11:03,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2073. [2018-10-25 00:11:03,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2073 states. [2018-10-25 00:11:03,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 3272 transitions. [2018-10-25 00:11:03,979 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 3272 transitions. Word has length 198 [2018-10-25 00:11:03,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:11:03,980 INFO L481 AbstractCegarLoop]: Abstraction has 2073 states and 3272 transitions. [2018-10-25 00:11:03,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-25 00:11:03,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 3272 transitions. [2018-10-25 00:11:03,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-25 00:11:03,988 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:11:03,989 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-25 00:11:03,989 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:11:03,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:11:03,990 INFO L82 PathProgramCache]: Analyzing trace with hash 129922850, now seen corresponding path program 1 times [2018-10-25 00:11:03,990 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:11:03,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:11:03,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:11:03,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:11:03,991 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:11:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:11:04,257 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 00:11:04,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:11:04,257 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:11:04,257 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-10-25 00:11:04,258 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], [115], [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], [781], [783], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:11:04,268 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:11:04,268 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:11:05,307 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:11:05,307 INFO L272 AbstractInterpreter]: Visited 169 different actions 332 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:11:05,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:11:05,315 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:11:07,052 INFO L232 lantSequenceWeakener]: Weakened 207 states. On average, predicates are now at 71.17% of their original sizes. [2018-10-25 00:11:07,053 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:11:07,496 INFO L413 sIntCurrentIteration]: We have 209 unified AI predicates [2018-10-25 00:11:07,496 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:11:07,497 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:11:07,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [4] total 22 [2018-10-25 00:11:07,497 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:11:07,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-25 00:11:07,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-25 00:11:07,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2018-10-25 00:11:07,499 INFO L87 Difference]: Start difference. First operand 2073 states and 3272 transitions. Second operand 20 states. [2018-10-25 00:12:18,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:12:18,569 INFO L93 Difference]: Finished difference Result 4148 states and 6689 transitions. [2018-10-25 00:12:18,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-25 00:12:18,569 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 210 [2018-10-25 00:12:18,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:12:18,581 INFO L225 Difference]: With dead ends: 4148 [2018-10-25 00:12:18,581 INFO L226 Difference]: Without dead ends: 2289 [2018-10-25 00:12:18,586 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 218 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2018-10-25 00:12:18,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2018-10-25 00:12:18,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2286. [2018-10-25 00:12:18,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2286 states. [2018-10-25 00:12:18,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2286 states to 2286 states and 3501 transitions. [2018-10-25 00:12:18,646 INFO L78 Accepts]: Start accepts. Automaton has 2286 states and 3501 transitions. Word has length 210 [2018-10-25 00:12:18,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:12:18,647 INFO L481 AbstractCegarLoop]: Abstraction has 2286 states and 3501 transitions. [2018-10-25 00:12:18,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-25 00:12:18,647 INFO L276 IsEmpty]: Start isEmpty. Operand 2286 states and 3501 transitions. [2018-10-25 00:12:18,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-25 00:12:18,655 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:12:18,655 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:12:18,655 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:12:18,656 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:12:18,656 INFO L82 PathProgramCache]: Analyzing trace with hash 559717910, now seen corresponding path program 1 times [2018-10-25 00:12:18,656 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:12:18,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:12:18,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:12:18,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:12:18,657 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:12:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:12:18,908 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:12:18,908 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:12:18,908 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:12:18,908 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2018-10-25 00:12:18,909 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], [135], [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], [781], [783], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:12:18,920 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:12:18,921 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:12:21,116 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:12:21,116 INFO L272 AbstractInterpreter]: Visited 169 different actions 337 times. Merged at 7 different actions 10 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:12:21,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:12:21,125 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:12:24,065 INFO L232 lantSequenceWeakener]: Weakened 8 states. On average, predicates are now at 90.7% of their original sizes. [2018-10-25 00:12:24,065 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:12:30,646 INFO L413 sIntCurrentIteration]: We have 224 unified AI predicates [2018-10-25 00:12:30,647 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:12:30,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:12:30,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-25 00:12:30,647 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:12:30,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-25 00:12:30,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-25 00:12:30,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-25 00:12:30,648 INFO L87 Difference]: Start difference. First operand 2286 states and 3501 transitions. Second operand 11 states. [2018-10-25 00:13:29,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:29,161 INFO L93 Difference]: Finished difference Result 6649 states and 10877 transitions. [2018-10-25 00:13:29,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-25 00:13:29,162 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 225 [2018-10-25 00:13:29,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:29,188 INFO L225 Difference]: With dead ends: 6649 [2018-10-25 00:13:29,189 INFO L226 Difference]: Without dead ends: 4790 [2018-10-25 00:13:29,201 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 228 GetRequests, 79 SyntacticMatches, 136 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2018-10-25 00:13:29,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4790 states. [2018-10-25 00:13:29,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4790 to 4779. [2018-10-25 00:13:29,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4779 states. [2018-10-25 00:13:29,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4779 states to 4779 states and 7198 transitions. [2018-10-25 00:13:29,341 INFO L78 Accepts]: Start accepts. Automaton has 4779 states and 7198 transitions. Word has length 225 [2018-10-25 00:13:29,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:29,342 INFO L481 AbstractCegarLoop]: Abstraction has 4779 states and 7198 transitions. [2018-10-25 00:13:29,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-25 00:13:29,342 INFO L276 IsEmpty]: Start isEmpty. Operand 4779 states and 7198 transitions. [2018-10-25 00:13:29,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-25 00:13:29,358 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:29,358 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:29,359 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:29,359 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:29,359 INFO L82 PathProgramCache]: Analyzing trace with hash 540442877, now seen corresponding path program 1 times [2018-10-25 00:13:29,359 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:29,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:29,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:29,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:29,361 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:29,626 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:13:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 92 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-25 00:13:29,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:13:29,774 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:13:29,774 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 239 with the following transitions: [2018-10-25 00:13:29,775 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [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], [135], [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], [781], [783], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:13:29,781 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:13:29,781 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:13:34,984 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:13:34,984 INFO L272 AbstractInterpreter]: Visited 172 different actions 513 times. Merged at 8 different actions 21 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-25 00:13:34,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:34,987 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:13:34,987 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:13:34,987 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 00:13:34,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:34,998 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:13:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:35,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:13:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-10-25 00:13:35,980 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:13:37,639 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 77 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-10-25 00:13:37,672 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:13:37,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-25 00:13:37,673 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:13:37,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 00:13:37,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 00:13:37,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-25 00:13:37,674 INFO L87 Difference]: Start difference. First operand 4779 states and 7198 transitions. Second operand 9 states. Received shutdown request... [2018-10-25 00:13:38,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:13:38,466 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:13:38,473 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:13:38,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:13:38 BoogieIcfgContainer [2018-10-25 00:13:38,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:13:38,474 INFO L168 Benchmark]: Toolchain (without parser) took 246504.71 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-25 00:13:38,475 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 00:13:38,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1124.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-25 00:13:38,477 INFO L168 Benchmark]: Boogie Procedure Inliner took 319.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -872.0 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2018-10-25 00:13:38,478 INFO L168 Benchmark]: Boogie Preprocessor took 157.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-10-25 00:13:38,478 INFO L168 Benchmark]: RCFGBuilder took 4885.24 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: 245.7 MB). Peak memory consumption was 245.7 MB. Max. memory is 7.1 GB. [2018-10-25 00:13:38,479 INFO L168 Benchmark]: TraceAbstraction took 240013.37 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 2.4 GB in the end (delta: -501.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-25 00:13:38,484 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1124.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 319.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -872.0 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 157.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4885.24 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: 245.7 MB). Peak memory consumption was 245.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 240013.37 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 2.4 GB in the end (delta: -501.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1509]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1509). Cancelled while BasicCegarLoop was constructing difference of abstraction (4779states) and FLOYD_HOARE automaton (currently 6 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (123 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 239.9s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 209.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1734 SDtfs, 6902 SDslu, 2013 SDs, 0 SdLazy, 13881 SolverSat, 968 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 159.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1150 GetRequests, 931 SyntacticMatches, 146 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 10.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4779occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.0s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9990486784623458 AbsIntWeakeningRatio, 0.2841269841269841 AbsIntAvgWeakeningVarsNumRemoved, 19.81111111111111 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 65 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 1627 NumberOfCodeBlocks, 1627 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1856 ConstructedInterpolants, 0 QuantifiedInterpolants, 915530 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1380 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 465/558 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown