java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:06:21,006 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:06:21,008 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:06:21,025 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:06:21,026 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:06:21,027 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:06:21,028 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:06:21,030 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:06:21,032 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:06:21,032 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:06:21,034 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:06:21,034 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:06:21,035 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:06:21,038 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:06:21,042 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:06:21,043 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:06:21,044 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:06:21,046 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:06:21,053 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:06:21,057 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:06:21,058 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:06:21,061 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:06:21,063 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:06:21,063 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:06:21,063 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:06:21,064 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:06:21,069 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:06:21,070 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:06:21,071 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:06:21,074 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:06:21,075 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:06:21,075 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:06:21,076 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:06:21,076 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:06:21,077 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:06:21,077 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:06:21,080 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 15:06:21,103 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:06:21,103 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:06:21,104 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:06:21,104 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:06:21,104 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:06:21,104 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:06:21,105 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:06:21,105 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:06:21,105 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:06:21,105 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:06:21,105 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:06:21,106 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:06:21,106 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:06:21,106 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:06:21,107 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:06:21,107 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:06:21,107 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:06:21,107 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:06:21,107 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:06:21,108 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:06:21,108 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:06:21,108 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:06:21,108 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:06:21,108 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:06:21,109 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:06:21,109 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:06:21,109 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:06:21,109 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:06:21,109 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:06:21,110 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:06:21,110 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:06:21,110 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:06:21,110 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:06:21,110 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:06:21,165 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:06:21,184 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:06:21,188 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:06:21,190 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:06:21,190 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:06:21,191 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label01_true-unreach-call.c [2018-11-07 15:06:21,263 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28d4ac0c5/49569ac1533847048c7291d1b1fbb81e/FLAGb59b19890 [2018-11-07 15:06:21,928 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:06:21,929 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label01_true-unreach-call.c [2018-11-07 15:06:21,948 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28d4ac0c5/49569ac1533847048c7291d1b1fbb81e/FLAGb59b19890 [2018-11-07 15:06:21,966 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28d4ac0c5/49569ac1533847048c7291d1b1fbb81e [2018-11-07 15:06:21,978 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:06:21,980 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:06:21,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:06:21,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:06:21,986 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:06:21,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:06:21" (1/1) ... [2018-11-07 15:06:21,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386f4038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:21, skipping insertion in model container [2018-11-07 15:06:21,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:06:21" (1/1) ... [2018-11-07 15:06:22,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:06:22,123 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:06:23,018 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:06:23,023 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:06:23,346 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:06:23,370 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:06:23,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:23 WrapperNode [2018-11-07 15:06:23,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:06:23,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:06:23,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:06:23,372 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:06:23,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:23" (1/1) ... [2018-11-07 15:06:23,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:23" (1/1) ... [2018-11-07 15:06:23,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:06:23,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:06:23,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:06:23,604 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:06:23,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:23" (1/1) ... [2018-11-07 15:06:23,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:23" (1/1) ... [2018-11-07 15:06:23,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:23" (1/1) ... [2018-11-07 15:06:23,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:23" (1/1) ... [2018-11-07 15:06:23,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:23" (1/1) ... [2018-11-07 15:06:23,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:23" (1/1) ... [2018-11-07 15:06:23,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:23" (1/1) ... [2018-11-07 15:06:23,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:06:23,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:06:23,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:06:23,793 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:06:23,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:06:23,865 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:06:23,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:06:23,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:06:23,866 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:06:23,866 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:06:23,866 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:06:23,866 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:06:23,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:06:23,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:06:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:06:23,868 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:06:30,396 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:06:30,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:06:30 BoogieIcfgContainer [2018-11-07 15:06:30,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:06:30,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:06:30,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:06:30,403 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:06:30,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:06:21" (1/3) ... [2018-11-07 15:06:30,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74444502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:06:30, skipping insertion in model container [2018-11-07 15:06:30,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:23" (2/3) ... [2018-11-07 15:06:30,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74444502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:06:30, skipping insertion in model container [2018-11-07 15:06:30,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:06:30" (3/3) ... [2018-11-07 15:06:30,409 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label01_true-unreach-call.c [2018-11-07 15:06:30,422 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:06:30,432 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:06:30,451 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:06:30,493 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:06:30,493 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:06:30,493 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:06:30,493 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:06:30,493 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:06:30,494 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:06:30,494 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:06:30,494 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:06:30,540 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 15:06:30,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-07 15:06:30,552 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:06:30,554 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] [2018-11-07 15:06:30,556 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:06:30,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:06:30,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1009438167, now seen corresponding path program 1 times [2018-11-07 15:06:30,567 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:06:30,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:06:30,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:06:30,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:06:30,614 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:06:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:06:31,118 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 15:06:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:06:31,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:06:31,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:06:31,165 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:06:31,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:06:31,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:06:31,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:06:31,207 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 15:06:37,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:06:37,885 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-11-07 15:06:37,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:06:37,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-11-07 15:06:37,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:06:37,917 INFO L225 Difference]: With dead ends: 1550 [2018-11-07 15:06:37,917 INFO L226 Difference]: Without dead ends: 1106 [2018-11-07 15:06:37,929 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:06:37,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-11-07 15:06:38,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-11-07 15:06:38,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-11-07 15:06:38,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-11-07 15:06:38,039 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 51 [2018-11-07 15:06:38,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:06:38,040 INFO L480 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-11-07 15:06:38,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:06:38,041 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-11-07 15:06:38,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-07 15:06:38,048 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:06:38,049 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:06:38,049 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:06:38,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:06:38,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1206177332, now seen corresponding path program 1 times [2018-11-07 15:06:38,050 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:06:38,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:06:38,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:06:38,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:06:38,052 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:06:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:06:38,288 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:06:38,289 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:06:38,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:06:38,289 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:06:38,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:06:38,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:06:38,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:06:38,292 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-11-07 15:06:43,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:06:43,076 INFO L93 Difference]: Finished difference Result 2248 states and 3762 transitions. [2018-11-07 15:06:43,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:06:43,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2018-11-07 15:06:43,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:06:43,091 INFO L225 Difference]: With dead ends: 2248 [2018-11-07 15:06:43,092 INFO L226 Difference]: Without dead ends: 1492 [2018-11-07 15:06:43,097 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:06:43,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2018-11-07 15:06:43,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1457. [2018-11-07 15:06:43,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-11-07 15:06:43,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-11-07 15:06:43,190 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 124 [2018-11-07 15:06:43,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:06:43,191 INFO L480 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-11-07 15:06:43,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:06:43,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-11-07 15:06:43,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 15:06:43,203 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:06:43,203 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:06:43,203 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:06:43,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:06:43,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1698433604, now seen corresponding path program 1 times [2018-11-07 15:06:43,204 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:06:43,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:06:43,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:06:43,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:06:43,206 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:06:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:06:43,457 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:06:43,458 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:06:43,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:06:43,458 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:06:43,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:06:43,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:06:43,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:06:43,461 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 4 states. [2018-11-07 15:06:49,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:06:49,277 INFO L93 Difference]: Finished difference Result 5392 states and 8275 transitions. [2018-11-07 15:06:49,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:06:49,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-11-07 15:06:49,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:06:49,306 INFO L225 Difference]: With dead ends: 5392 [2018-11-07 15:06:49,307 INFO L226 Difference]: Without dead ends: 3941 [2018-11-07 15:06:49,321 INFO L604 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 [2018-11-07 15:06:49,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2018-11-07 15:06:49,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3939. [2018-11-07 15:06:49,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3939 states. [2018-11-07 15:06:49,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 5428 transitions. [2018-11-07 15:06:49,445 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 5428 transitions. Word has length 132 [2018-11-07 15:06:49,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:06:49,446 INFO L480 AbstractCegarLoop]: Abstraction has 3939 states and 5428 transitions. [2018-11-07 15:06:49,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:06:49,446 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 5428 transitions. [2018-11-07 15:06:49,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-11-07 15:06:49,453 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:06:49,453 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2018-11-07 15:06:49,454 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:06:49,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:06:49,454 INFO L82 PathProgramCache]: Analyzing trace with hash 782695778, now seen corresponding path program 1 times [2018-11-07 15:06:49,454 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:06:49,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:06:49,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:06:49,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:06:49,456 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:06:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:06:49,791 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:06:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 88 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:06:49,876 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:06:49,876 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:06:49,877 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 209 with the following transitions: [2018-11-07 15:06:49,882 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [381], [383], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [633], [638], [640], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 15:06:49,958 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:06:49,958 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:06:50,443 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:06:50,445 INFO L272 AbstractInterpreter]: Visited 90 different actions 90 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:06:50,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:06:50,499 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:06:50,996 INFO L227 lantSequenceWeakener]: Weakened 197 states. On average, predicates are now at 78.02% of their original sizes. [2018-11-07 15:06:50,996 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:06:51,114 INFO L415 sIntCurrentIteration]: We unified 207 AI predicates to 207 [2018-11-07 15:06:51,114 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:06:51,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:06:51,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 15:06:51,116 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:06:51,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 15:06:51,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 15:06:51,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 15:06:51,118 INFO L87 Difference]: Start difference. First operand 3939 states and 5428 transitions. Second operand 7 states. [2018-11-07 15:06:53,268 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown