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/Problem16_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:18:47,019 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:18:47,023 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:18:47,040 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:18:47,041 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:18:47,042 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:18:47,044 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:18:47,047 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:18:47,049 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:18:47,051 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:18:47,054 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:18:47,054 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:18:47,056 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:18:47,057 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:18:47,066 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:18:47,067 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:18:47,068 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:18:47,070 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:18:47,075 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:18:47,080 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:18:47,081 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:18:47,083 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:18:47,087 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:18:47,088 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:18:47,088 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:18:47,089 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:18:47,090 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:18:47,093 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:18:47,094 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:18:47,095 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:18:47,095 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:18:47,096 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:18:47,098 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:18:47,098 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:18:47,099 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:18:47,100 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:18:47,100 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 [2018-10-27 08:18:47,130 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:18:47,130 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:18:47,131 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:18:47,132 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:18:47,135 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:18:47,135 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:18:47,135 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:18:47,136 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:18:47,136 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:18:47,136 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:18:47,136 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:18:47,136 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:18:47,137 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:18:47,137 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:18:47,138 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:18:47,138 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:18:47,139 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:18:47,139 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:18:47,139 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:18:47,139 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:18:47,139 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:18:47,140 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:18:47,141 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:18:47,142 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:18:47,142 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:18:47,142 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:18:47,142 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:18:47,142 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:18:47,143 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:18:47,143 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:18:47,143 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:18:47,143 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:18:47,143 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:18:47,144 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:18:47,144 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:18:47,144 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:18:47,201 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:18:47,216 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:18:47,222 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:18:47,223 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:18:47,224 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:18:47,225 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label10_true-unreach-call.c [2018-10-27 08:18:47,295 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/254d1d224/6b98b0d69af046a196bc69573acefee0/FLAG261329295 [2018-10-27 08:18:47,965 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:18:47,966 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label10_true-unreach-call.c [2018-10-27 08:18:47,981 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/254d1d224/6b98b0d69af046a196bc69573acefee0/FLAG261329295 [2018-10-27 08:18:47,996 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/254d1d224/6b98b0d69af046a196bc69573acefee0 [2018-10-27 08:18:48,007 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:18:48,008 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:18:48,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:18:48,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:18:48,013 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:18:48,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:18:47" (1/1) ... [2018-10-27 08:18:48,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa98528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:48, skipping insertion in model container [2018-10-27 08:18:48,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:18:47" (1/1) ... [2018-10-27 08:18:48,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:18:48,107 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:18:48,853 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:18:48,857 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:18:49,099 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:18:49,124 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:18:49,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:49 WrapperNode [2018-10-27 08:18:49,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:18:49,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:18:49,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:18:49,126 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:18:49,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:49" (1/1) ... [2018-10-27 08:18:49,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:49" (1/1) ... [2018-10-27 08:18:49,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:18:49,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:18:49,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:18:49,434 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:18:49,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:49" (1/1) ... [2018-10-27 08:18:49,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:49" (1/1) ... [2018-10-27 08:18:49,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:49" (1/1) ... [2018-10-27 08:18:49,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:49" (1/1) ... [2018-10-27 08:18:49,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:49" (1/1) ... [2018-10-27 08:18:49,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:49" (1/1) ... [2018-10-27 08:18:49,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:49" (1/1) ... [2018-10-27 08:18:49,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:18:49,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:18:49,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:18:49,589 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:18:49,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:49" (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 [2018-10-27 08:18:49,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:18:49,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:18:49,660 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:18:49,660 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:18:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:18:49,661 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:18:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:18:49,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:18:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:18:49,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:18:57,623 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:18:57,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:18:57 BoogieIcfgContainer [2018-10-27 08:18:57,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:18:57,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:18:57,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:18:57,630 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:18:57,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:18:47" (1/3) ... [2018-10-27 08:18:57,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f095bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:18:57, skipping insertion in model container [2018-10-27 08:18:57,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:49" (2/3) ... [2018-10-27 08:18:57,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f095bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:18:57, skipping insertion in model container [2018-10-27 08:18:57,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:18:57" (3/3) ... [2018-10-27 08:18:57,633 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label10_true-unreach-call.c [2018-10-27 08:18:57,643 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:18:57,651 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:18:57,669 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:18:57,708 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:18:57,709 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:18:57,709 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:18:57,709 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:18:57,709 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:18:57,709 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:18:57,710 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:18:57,710 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:18:57,741 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 08:18:57,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-27 08:18:57,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:18:57,750 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] [2018-10-27 08:18:57,753 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:18:57,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:18:57,759 INFO L82 PathProgramCache]: Analyzing trace with hash -369179421, now seen corresponding path program 1 times [2018-10-27 08:18:57,761 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:18:57,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:57,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:18:57,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:57,804 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:18:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:18:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:18:58,293 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:18:58,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:18:58,294 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:18:58,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:18:58,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:18:58,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:18:58,317 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-10-27 08:19:06,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:19:06,375 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-10-27 08:19:06,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:19:06,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-10-27 08:19:06,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:19:06,411 INFO L225 Difference]: With dead ends: 1513 [2018-10-27 08:19:06,412 INFO L226 Difference]: Without dead ends: 1097 [2018-10-27 08:19:06,423 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:19:06,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-10-27 08:19:06,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1097. [2018-10-27 08:19:06,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2018-10-27 08:19:06,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1954 transitions. [2018-10-27 08:19:06,557 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1954 transitions. Word has length 39 [2018-10-27 08:19:06,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:19:06,558 INFO L481 AbstractCegarLoop]: Abstraction has 1097 states and 1954 transitions. [2018-10-27 08:19:06,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:19:06,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1954 transitions. [2018-10-27 08:19:06,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-27 08:19:06,565 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:19:06,566 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:19:06,566 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:19:06,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:19:06,567 INFO L82 PathProgramCache]: Analyzing trace with hash -820358275, now seen corresponding path program 1 times [2018-10-27 08:19:06,567 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:19:06,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:06,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:19:06,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:06,568 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:19:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:19:07,029 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:19:07,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:19:07,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:19:07,030 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:19:07,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:19:07,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:19:07,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:19:07,034 INFO L87 Difference]: Start difference. First operand 1097 states and 1954 transitions. Second operand 6 states. [2018-10-27 08:19:13,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:19:13,226 INFO L93 Difference]: Finished difference Result 3259 states and 5952 transitions. [2018-10-27 08:19:13,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:19:13,227 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-10-27 08:19:13,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:19:13,252 INFO L225 Difference]: With dead ends: 3259 [2018-10-27 08:19:13,252 INFO L226 Difference]: Without dead ends: 2168 [2018-10-27 08:19:13,259 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:19:13,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2018-10-27 08:19:13,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2142. [2018-10-27 08:19:13,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2142 states. [2018-10-27 08:19:13,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 3739 transitions. [2018-10-27 08:19:13,347 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 3739 transitions. Word has length 110 [2018-10-27 08:19:13,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:19:13,348 INFO L481 AbstractCegarLoop]: Abstraction has 2142 states and 3739 transitions. [2018-10-27 08:19:13,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:19:13,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 3739 transitions. [2018-10-27 08:19:13,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-27 08:19:13,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:19:13,356 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:19:13,357 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:19:13,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:19:13,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1928773899, now seen corresponding path program 1 times [2018-10-27 08:19:13,357 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:19:13,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:13,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:19:13,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:13,359 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:19:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:19:13,623 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:19:13,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:19:13,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:19:13,624 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:19:13,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:19:13,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:19:13,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:19:13,625 INFO L87 Difference]: Start difference. First operand 2142 states and 3739 transitions. Second operand 6 states. [2018-10-27 08:19:18,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:19:18,336 INFO L93 Difference]: Finished difference Result 7053 states and 12688 transitions. [2018-10-27 08:19:18,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:19:18,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-10-27 08:19:18,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:19:18,372 INFO L225 Difference]: With dead ends: 7053 [2018-10-27 08:19:18,373 INFO L226 Difference]: Without dead ends: 4917 [2018-10-27 08:19:18,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:19:18,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2018-10-27 08:19:18,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 4877. [2018-10-27 08:19:18,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4877 states. [2018-10-27 08:19:18,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4877 states to 4877 states and 7891 transitions. [2018-10-27 08:19:18,558 INFO L78 Accepts]: Start accepts. Automaton has 4877 states and 7891 transitions. Word has length 138 [2018-10-27 08:19:18,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:19:18,559 INFO L481 AbstractCegarLoop]: Abstraction has 4877 states and 7891 transitions. [2018-10-27 08:19:18,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:19:18,559 INFO L276 IsEmpty]: Start isEmpty. Operand 4877 states and 7891 transitions. [2018-10-27 08:19:18,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-27 08:19:18,562 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:19:18,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:19:18,563 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:19:18,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:19:18,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1730052985, now seen corresponding path program 1 times [2018-10-27 08:19:18,563 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:19:18,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:18,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:19:18,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:18,567 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:19:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:19:18,807 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:19:18,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:19:18,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:19:18,808 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:19:18,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:19:18,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:19:18,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:19:18,809 INFO L87 Difference]: Start difference. First operand 4877 states and 7891 transitions. Second operand 6 states. [2018-10-27 08:19:22,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:19:22,512 INFO L93 Difference]: Finished difference Result 11909 states and 19972 transitions. [2018-10-27 08:19:22,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:19:22,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2018-10-27 08:19:22,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:19:22,565 INFO L225 Difference]: With dead ends: 11909 [2018-10-27 08:19:22,565 INFO L226 Difference]: Without dead ends: 7038 [2018-10-27 08:19:22,592 INFO L605 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 [2018-10-27 08:19:22,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7038 states. [2018-10-27 08:19:22,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7038 to 6977. [2018-10-27 08:19:22,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6977 states. [2018-10-27 08:19:22,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 9942 transitions. [2018-10-27 08:19:22,817 INFO L78 Accepts]: Start accepts. Automaton has 6977 states and 9942 transitions. Word has length 156 [2018-10-27 08:19:22,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:19:22,818 INFO L481 AbstractCegarLoop]: Abstraction has 6977 states and 9942 transitions. [2018-10-27 08:19:22,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:19:22,818 INFO L276 IsEmpty]: Start isEmpty. Operand 6977 states and 9942 transitions. [2018-10-27 08:19:22,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-27 08:19:22,821 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:19:22,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:19:22,822 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:19:22,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:19:22,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1129340368, now seen corresponding path program 1 times [2018-10-27 08:19:22,823 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:19:22,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:22,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:19:22,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:22,824 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:19:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:19:23,145 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:19:23,596 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:19:23,596 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:19:23,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:19:23,597 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:19:23,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:19:23,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:19:23,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:19:23,598 INFO L87 Difference]: Start difference. First operand 6977 states and 9942 transitions. Second operand 6 states. [2018-10-27 08:19:29,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:19:29,097 INFO L93 Difference]: Finished difference Result 17709 states and 25496 transitions. [2018-10-27 08:19:29,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:19:29,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2018-10-27 08:19:29,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:19:29,166 INFO L225 Difference]: With dead ends: 17709 [2018-10-27 08:19:29,167 INFO L226 Difference]: Without dead ends: 10738 [2018-10-27 08:19:29,210 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:19:29,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10738 states. [2018-10-27 08:19:29,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10738 to 10702. [2018-10-27 08:19:29,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10702 states. [2018-10-27 08:19:29,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10702 states to 10702 states and 14504 transitions. [2018-10-27 08:19:29,463 INFO L78 Accepts]: Start accepts. Automaton has 10702 states and 14504 transitions. Word has length 203 [2018-10-27 08:19:29,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:19:29,464 INFO L481 AbstractCegarLoop]: Abstraction has 10702 states and 14504 transitions. [2018-10-27 08:19:29,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:19:29,464 INFO L276 IsEmpty]: Start isEmpty. Operand 10702 states and 14504 transitions. [2018-10-27 08:19:29,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-27 08:19:29,470 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:19:29,470 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:19:29,470 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:19:29,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:19:29,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2083831764, now seen corresponding path program 1 times [2018-10-27 08:19:29,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:19:29,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:29,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:19:29,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:29,472 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:19:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:19:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-10-27 08:19:29,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:19:29,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:19:29,760 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:19:29,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:19:29,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:19:29,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:19:29,762 INFO L87 Difference]: Start difference. First operand 10702 states and 14504 transitions. Second operand 4 states. [2018-10-27 08:19:34,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:19:34,344 INFO L93 Difference]: Finished difference Result 27183 states and 37572 transitions. [2018-10-27 08:19:34,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:19:34,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2018-10-27 08:19:34,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:19:34,430 INFO L225 Difference]: With dead ends: 27183 [2018-10-27 08:19:34,430 INFO L226 Difference]: Without dead ends: 16487 [2018-10-27 08:19:34,467 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:19:34,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16487 states. [2018-10-27 08:19:34,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16487 to 16487. [2018-10-27 08:19:34,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16487 states. [2018-10-27 08:19:34,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16487 states to 16487 states and 21483 transitions. [2018-10-27 08:19:34,854 INFO L78 Accepts]: Start accepts. Automaton has 16487 states and 21483 transitions. Word has length 240 [2018-10-27 08:19:34,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:19:34,854 INFO L481 AbstractCegarLoop]: Abstraction has 16487 states and 21483 transitions. [2018-10-27 08:19:34,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:19:34,856 INFO L276 IsEmpty]: Start isEmpty. Operand 16487 states and 21483 transitions. [2018-10-27 08:19:34,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-10-27 08:19:34,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:19:34,889 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:19:34,890 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:19:34,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:19:34,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1463225967, now seen corresponding path program 1 times [2018-10-27 08:19:34,890 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:19:34,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:34,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:19:34,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:34,897 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:19:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:19:35,659 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 215 proven. 115 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-10-27 08:19:35,660 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:19:35,660 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:19:35,661 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 425 with the following transitions: [2018-10-27 08:19:35,664 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [391], [393], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [948], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:19:35,739 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:19:35,739 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:19:36,385 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:19:36,387 INFO L272 AbstractInterpreter]: Visited 145 different actions 145 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:19:36,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:19:36,431 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:19:37,371 INFO L227 lantSequenceWeakener]: Weakened 412 states. On average, predicates are now at 77.55% of their original sizes. [2018-10-27 08:19:37,372 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:19:37,563 INFO L415 sIntCurrentIteration]: We unified 423 AI predicates to 423 [2018-10-27 08:19:37,564 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:19:37,565 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:19:37,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 08:19:37,565 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:19:37,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:19:37,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:19:37,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:19:37,567 INFO L87 Difference]: Start difference. First operand 16487 states and 21483 transitions. Second operand 6 states. [2018-10-27 08:20:13,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:20:13,565 INFO L93 Difference]: Finished difference Result 33308 states and 43351 transitions. [2018-10-27 08:20:13,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:20:13,565 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 424 [2018-10-27 08:20:13,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:20:13,636 INFO L225 Difference]: With dead ends: 33308 [2018-10-27 08:20:13,636 INFO L226 Difference]: Without dead ends: 16827 [2018-10-27 08:20:13,687 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 424 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:20:13,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16827 states. [2018-10-27 08:20:13,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16827 to 16825. [2018-10-27 08:20:13,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16825 states. [2018-10-27 08:20:14,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16825 states to 16825 states and 21830 transitions. [2018-10-27 08:20:14,012 INFO L78 Accepts]: Start accepts. Automaton has 16825 states and 21830 transitions. Word has length 424 [2018-10-27 08:20:14,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:20:14,013 INFO L481 AbstractCegarLoop]: Abstraction has 16825 states and 21830 transitions. [2018-10-27 08:20:14,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:20:14,013 INFO L276 IsEmpty]: Start isEmpty. Operand 16825 states and 21830 transitions. [2018-10-27 08:20:14,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2018-10-27 08:20:14,056 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:20:14,057 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 08:20:14,057 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:20:14,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:14,058 INFO L82 PathProgramCache]: Analyzing trace with hash -264490446, now seen corresponding path program 1 times [2018-10-27 08:20:14,058 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:20:14,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:14,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:14,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:14,060 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:20:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:14,451 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-27 08:20:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 205 proven. 311 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-10-27 08:20:15,232 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:20:15,232 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:20:15,233 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 517 with the following transitions: [2018-10-27 08:20:15,234 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [391], [393], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [948], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:20:15,246 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:20:15,247 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:20:15,579 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:20:15,579 INFO L272 AbstractInterpreter]: Visited 149 different actions 434 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:20:15,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:15,618 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:20:16,155 INFO L227 lantSequenceWeakener]: Weakened 513 states. On average, predicates are now at 80.22% of their original sizes. [2018-10-27 08:20:16,155 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:20:16,922 INFO L415 sIntCurrentIteration]: We unified 515 AI predicates to 515 [2018-10-27 08:20:16,922 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:20:16,922 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:20:16,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-10-27 08:20:16,923 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:20:16,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:20:16,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:20:16,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:20:16,925 INFO L87 Difference]: Start difference. First operand 16825 states and 21830 transitions. Second operand 10 states. [2018-10-27 08:22:21,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:22:21,317 INFO L93 Difference]: Finished difference Result 35995 states and 46945 transitions. [2018-10-27 08:22:21,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-27 08:22:21,318 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 516 [2018-10-27 08:22:21,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:22:21,386 INFO L225 Difference]: With dead ends: 35995 [2018-10-27 08:22:21,387 INFO L226 Difference]: Without dead ends: 19514 [2018-10-27 08:22:21,440 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 525 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2018-10-27 08:22:21,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19514 states. [2018-10-27 08:22:21,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19514 to 19464. [2018-10-27 08:22:21,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19464 states. [2018-10-27 08:22:21,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19464 states to 19464 states and 24460 transitions. [2018-10-27 08:22:21,759 INFO L78 Accepts]: Start accepts. Automaton has 19464 states and 24460 transitions. Word has length 516 [2018-10-27 08:22:21,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:22:21,760 INFO L481 AbstractCegarLoop]: Abstraction has 19464 states and 24460 transitions. [2018-10-27 08:22:21,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 08:22:21,760 INFO L276 IsEmpty]: Start isEmpty. Operand 19464 states and 24460 transitions. [2018-10-27 08:22:21,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2018-10-27 08:22:21,823 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:22:21,823 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 08:22:21,824 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:22:21,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:22:21,824 INFO L82 PathProgramCache]: Analyzing trace with hash 810858186, now seen corresponding path program 1 times [2018-10-27 08:22:21,824 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:22:21,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:22:21,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:22:21,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:22:21,826 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:22:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:22:22,996 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 371 proven. 115 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2018-10-27 08:22:22,996 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:22:22,996 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:22:22,997 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 665 with the following transitions: [2018-10-27 08:22:22,997 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [391], [393], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [948], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:22:23,006 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:22:23,006 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:22:23,860 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:22:23,860 INFO L272 AbstractInterpreter]: Visited 251 different actions 1001 times. Merged at 9 different actions 32 times. Never widened. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:22:23,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:22:23,869 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:22:23,869 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:22:23,869 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 [2018-10-27 08:22:23,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:22:23,879 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:22:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:22:24,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:22:24,694 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 713 proven. 2 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2018-10-27 08:22:24,694 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:22:25,350 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 371 proven. 115 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2018-10-27 08:22:25,374 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:22:25,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 08:22:25,375 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:22:25,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:22:25,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:22:25,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-27 08:22:25,380 INFO L87 Difference]: Start difference. First operand 19464 states and 24460 transitions. Second operand 9 states. [2018-10-27 08:22:33,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:22:33,677 INFO L93 Difference]: Finished difference Result 40295 states and 52350 transitions. [2018-10-27 08:22:33,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 08:22:33,678 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 664 [2018-10-27 08:22:33,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:22:33,803 INFO L225 Difference]: With dead ends: 40295 [2018-10-27 08:22:33,803 INFO L226 Difference]: Without dead ends: 21175 [2018-10-27 08:22:33,930 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1349 GetRequests, 1331 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2018-10-27 08:22:33,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21175 states. [2018-10-27 08:22:34,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21175 to 21127. [2018-10-27 08:22:34,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21127 states. [2018-10-27 08:22:34,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21127 states to 21127 states and 26415 transitions. [2018-10-27 08:22:34,596 INFO L78 Accepts]: Start accepts. Automaton has 21127 states and 26415 transitions. Word has length 664 [2018-10-27 08:22:34,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:22:34,597 INFO L481 AbstractCegarLoop]: Abstraction has 21127 states and 26415 transitions. [2018-10-27 08:22:34,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:22:34,598 INFO L276 IsEmpty]: Start isEmpty. Operand 21127 states and 26415 transitions. [2018-10-27 08:22:34,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2018-10-27 08:22:34,707 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:22:34,708 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:22:34,709 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:22:34,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:22:34,709 INFO L82 PathProgramCache]: Analyzing trace with hash -51187270, now seen corresponding path program 1 times [2018-10-27 08:22:34,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:22:34,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:22:34,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:22:34,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:22:34,711 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:22:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:22:36,353 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-10-27 08:22:36,704 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-10-27 08:22:36,934 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:22:37,210 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2018-10-27 08:22:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 156 proven. 872 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2018-10-27 08:22:39,291 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:22:39,291 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:22:39,292 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 865 with the following transitions: [2018-10-27 08:22:39,292 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [391], [393], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [948], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1176], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1392], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:22:39,302 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:22:39,302 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:22:39,983 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:22:39,983 INFO L272 AbstractInterpreter]: Visited 260 different actions 514 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:22:40,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:22:40,009 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:22:40,956 INFO L227 lantSequenceWeakener]: Weakened 861 states. On average, predicates are now at 77.44% of their original sizes. [2018-10-27 08:22:40,956 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:22:41,772 INFO L415 sIntCurrentIteration]: We unified 863 AI predicates to 863 [2018-10-27 08:22:41,772 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:22:41,772 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:22:41,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2018-10-27 08:22:41,773 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:22:41,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:22:41,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:22:41,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:22:41,774 INFO L87 Difference]: Start difference. First operand 21127 states and 26415 transitions. Second operand 10 states. Received shutdown request... [2018-10-27 08:22:41,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:22:41,931 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:22:41,938 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:22:41,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:22:41 BoogieIcfgContainer [2018-10-27 08:22:41,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:22:41,939 INFO L168 Benchmark]: Toolchain (without parser) took 233932.06 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: -953.8 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-27 08:22:41,941 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-27 08:22:41,941 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1116.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-27 08:22:41,943 INFO L168 Benchmark]: Boogie Procedure Inliner took 307.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -879.4 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-27 08:22:41,944 INFO L168 Benchmark]: Boogie Preprocessor took 154.66 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-10-27 08:22:41,945 INFO L168 Benchmark]: RCFGBuilder took 8035.68 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: 279.9 MB). Peak memory consumption was 279.9 MB. Max. memory is 7.1 GB. [2018-10-27 08:22:41,946 INFO L168 Benchmark]: TraceAbstraction took 224313.12 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: -452.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-27 08:22:41,955 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1116.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 307.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -879.4 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 154.66 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8035.68 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: 279.9 MB). Peak memory consumption was 279.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224313.12 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: -452.3 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: 103]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 103). Cancelled while BasicCegarLoop was constructing difference of abstraction (21127states) and FLOYD_HOARE automaton (currently 3 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (4 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 224.2s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 202.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1740 SDtfs, 15984 SDslu, 1438 SDs, 0 SdLazy, 20651 SolverSat, 6287 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 163.9s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 3212 GetRequests, 3127 SyntacticMatches, 5 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21127occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.7s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9981275739073029 AbsIntWeakeningRatio, 0.059966685174902834 AbsIntAvgWeakeningVarsNumRemoved, 16.299833425874514 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 263 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 4018 NumberOfCodeBlocks, 4018 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 4670 ConstructedInterpolants, 0 QuantifiedInterpolants, 12013483 SizeOfPredicates, 0 NumberOfNonLiveVariables, 931 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 3759/5289 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown