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/Problem11_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 07:39:12,123 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 07:39:12,126 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 07:39:12,141 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 07:39:12,141 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 07:39:12,142 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 07:39:12,143 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 07:39:12,145 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 07:39:12,147 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 07:39:12,150 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 07:39:12,150 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 07:39:12,152 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 07:39:12,153 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 07:39:12,154 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 07:39:12,159 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 07:39:12,160 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 07:39:12,160 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 07:39:12,165 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 07:39:12,167 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 07:39:12,169 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 07:39:12,170 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 07:39:12,171 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 07:39:12,173 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 07:39:12,173 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 07:39:12,173 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 07:39:12,174 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 07:39:12,175 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 07:39:12,176 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 07:39:12,176 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 07:39:12,177 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 07:39:12,178 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 07:39:12,178 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 07:39:12,178 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 07:39:12,179 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 07:39:12,179 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 07:39:12,180 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 07:39:12,180 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 07:39:12,201 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 07:39:12,202 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 07:39:12,202 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 07:39:12,203 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 07:39:12,203 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 07:39:12,203 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 07:39:12,203 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 07:39:12,203 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 07:39:12,204 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 07:39:12,204 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 07:39:12,204 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 07:39:12,204 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 07:39:12,204 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 07:39:12,205 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 07:39:12,205 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 07:39:12,205 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 07:39:12,206 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 07:39:12,206 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 07:39:12,206 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 07:39:12,206 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 07:39:12,206 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 07:39:12,207 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 07:39:12,207 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 07:39:12,207 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 07:39:12,207 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 07:39:12,207 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 07:39:12,208 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:39:12,208 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 07:39:12,208 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 07:39:12,208 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 07:39:12,209 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 07:39:12,209 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 07:39:12,209 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 07:39:12,209 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 07:39:12,209 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 07:39:12,210 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 07:39:12,258 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 07:39:12,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 07:39:12,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 07:39:12,276 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 07:39:12,276 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 07:39:12,277 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label53_true-unreach-call.c [2018-10-27 07:39:12,341 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/da075c300/4871425ff11b4031b636c7ef205d468a/FLAG868090606 [2018-10-27 07:39:13,006 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 07:39:13,007 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label53_true-unreach-call.c [2018-10-27 07:39:13,026 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/da075c300/4871425ff11b4031b636c7ef205d468a/FLAG868090606 [2018-10-27 07:39:13,049 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/da075c300/4871425ff11b4031b636c7ef205d468a [2018-10-27 07:39:13,064 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 07:39:13,069 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 07:39:13,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 07:39:13,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 07:39:13,075 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 07:39:13,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:39:13" (1/1) ... [2018-10-27 07:39:13,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a8effd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:13, skipping insertion in model container [2018-10-27 07:39:13,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:39:13" (1/1) ... [2018-10-27 07:39:13,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 07:39:13,177 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 07:39:13,952 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:39:13,957 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 07:39:14,185 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:39:14,205 INFO L193 MainTranslator]: Completed translation [2018-10-27 07:39:14,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:14 WrapperNode [2018-10-27 07:39:14,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 07:39:14,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 07:39:14,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 07:39:14,207 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 07:39:14,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:14" (1/1) ... [2018-10-27 07:39:14,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:14" (1/1) ... [2018-10-27 07:39:14,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 07:39:14,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 07:39:14,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 07:39:14,529 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 07:39:14,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:14" (1/1) ... [2018-10-27 07:39:14,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:14" (1/1) ... [2018-10-27 07:39:14,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:14" (1/1) ... [2018-10-27 07:39:14,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:14" (1/1) ... [2018-10-27 07:39:14,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:14" (1/1) ... [2018-10-27 07:39:14,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:14" (1/1) ... [2018-10-27 07:39:14,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:14" (1/1) ... [2018-10-27 07:39:14,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 07:39:14,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 07:39:14,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 07:39:14,677 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 07:39:14,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:14" (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 07:39:14,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 07:39:14,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 07:39:14,754 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 07:39:14,754 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 07:39:14,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 07:39:14,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 07:39:14,754 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 07:39:14,755 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 07:39:19,690 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 07:39:19,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:39:19 BoogieIcfgContainer [2018-10-27 07:39:19,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 07:39:19,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 07:39:19,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 07:39:19,698 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 07:39:19,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:39:13" (1/3) ... [2018-10-27 07:39:19,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ccfbf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:39:19, skipping insertion in model container [2018-10-27 07:39:19,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:39:14" (2/3) ... [2018-10-27 07:39:19,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ccfbf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:39:19, skipping insertion in model container [2018-10-27 07:39:19,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:39:19" (3/3) ... [2018-10-27 07:39:19,705 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label53_true-unreach-call.c [2018-10-27 07:39:19,716 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 07:39:19,727 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 07:39:19,746 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 07:39:19,791 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 07:39:19,791 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 07:39:19,792 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 07:39:19,792 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 07:39:19,792 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 07:39:19,792 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 07:39:19,792 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 07:39:19,792 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 07:39:19,825 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-27 07:39:19,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-27 07:39:19,836 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:39:19,837 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:39:19,840 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:39:19,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:39:19,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1916491172, now seen corresponding path program 1 times [2018-10-27 07:39:19,851 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:39:19,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:19,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:39:19,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:19,908 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:39:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:39:20,438 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-27 07:39:20,462 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 07:39:20,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:39:20,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 07:39:20,466 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:39:20,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 07:39:20,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 07:39:20,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:39:20,493 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-27 07:39:24,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:39:24,523 INFO L93 Difference]: Finished difference Result 1001 states and 1780 transitions. [2018-10-27 07:39:24,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 07:39:24,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-10-27 07:39:24,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:39:24,548 INFO L225 Difference]: With dead ends: 1001 [2018-10-27 07:39:24,548 INFO L226 Difference]: Without dead ends: 702 [2018-10-27 07:39:24,560 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 07:39:24,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2018-10-27 07:39:24,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 699. [2018-10-27 07:39:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2018-10-27 07:39:24,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1082 transitions. [2018-10-27 07:39:24,666 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1082 transitions. Word has length 54 [2018-10-27 07:39:24,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:39:24,667 INFO L481 AbstractCegarLoop]: Abstraction has 699 states and 1082 transitions. [2018-10-27 07:39:24,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 07:39:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1082 transitions. [2018-10-27 07:39:24,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-27 07:39:24,676 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:39:24,677 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:39:24,677 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:39:24,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:39:24,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1310907987, now seen corresponding path program 1 times [2018-10-27 07:39:24,678 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:39:24,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:24,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:39:24,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:24,680 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:39:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:39:25,088 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:39:25,088 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:39:25,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:39:25,089 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:39:25,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:39:25,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:39:25,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:39:25,092 INFO L87 Difference]: Start difference. First operand 699 states and 1082 transitions. Second operand 6 states. [2018-10-27 07:39:29,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:39:29,939 INFO L93 Difference]: Finished difference Result 2534 states and 4100 transitions. [2018-10-27 07:39:29,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:39:29,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-10-27 07:39:29,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:39:29,955 INFO L225 Difference]: With dead ends: 2534 [2018-10-27 07:39:29,955 INFO L226 Difference]: Without dead ends: 1841 [2018-10-27 07:39:29,964 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 07:39:29,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2018-10-27 07:39:30,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1815. [2018-10-27 07:39:30,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1815 states. [2018-10-27 07:39:30,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2683 transitions. [2018-10-27 07:39:30,074 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2683 transitions. Word has length 127 [2018-10-27 07:39:30,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:39:30,074 INFO L481 AbstractCegarLoop]: Abstraction has 1815 states and 2683 transitions. [2018-10-27 07:39:30,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:39:30,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2683 transitions. [2018-10-27 07:39:30,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-27 07:39:30,097 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:39:30,097 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2018-10-27 07:39:30,098 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:39:30,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:39:30,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1917313452, now seen corresponding path program 1 times [2018-10-27 07:39:30,102 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:39:30,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:30,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:39:30,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:30,104 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:39:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:39:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-27 07:39:30,483 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:39:30,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 07:39:30,483 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:39:30,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 07:39:30,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 07:39:30,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:39:30,485 INFO L87 Difference]: Start difference. First operand 1815 states and 2683 transitions. Second operand 4 states. [2018-10-27 07:39:34,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:39:34,328 INFO L93 Difference]: Finished difference Result 4749 states and 7412 transitions. [2018-10-27 07:39:34,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 07:39:34,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 230 [2018-10-27 07:39:34,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:39:34,360 INFO L225 Difference]: With dead ends: 4749 [2018-10-27 07:39:34,361 INFO L226 Difference]: Without dead ends: 2940 [2018-10-27 07:39:34,375 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 07:39:34,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2018-10-27 07:39:34,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2927. [2018-10-27 07:39:34,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2927 states. [2018-10-27 07:39:34,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 4052 transitions. [2018-10-27 07:39:34,483 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 4052 transitions. Word has length 230 [2018-10-27 07:39:34,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:39:34,486 INFO L481 AbstractCegarLoop]: Abstraction has 2927 states and 4052 transitions. [2018-10-27 07:39:34,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 07:39:34,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 4052 transitions. [2018-10-27 07:39:34,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-27 07:39:34,494 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:39:34,494 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2018-10-27 07:39:34,495 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:39:34,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:39:34,495 INFO L82 PathProgramCache]: Analyzing trace with hash -20907064, now seen corresponding path program 1 times [2018-10-27 07:39:34,495 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:39:34,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:34,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:39:34,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:39:34,497 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:39:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:39:35,112 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:39:35,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:39:35,113 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:39:35,115 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-10-27 07:39:35,117 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [653], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:39:35,196 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:39:35,196 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:39:36,131 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:39:36,134 INFO L272 AbstractInterpreter]: Visited 113 different actions 113 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-27 07:39:36,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:39:36,176 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:39:36,957 INFO L227 lantSequenceWeakener]: Weakened 227 states. On average, predicates are now at 73.59% of their original sizes. [2018-10-27 07:39:36,958 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:39:37,196 INFO L415 sIntCurrentIteration]: We unified 235 AI predicates to 235 [2018-10-27 07:39:37,196 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:39:37,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:39:37,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 07:39:37,203 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:39:37,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:39:37,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:39:37,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:39:37,205 INFO L87 Difference]: Start difference. First operand 2927 states and 4052 transitions. Second operand 6 states. [2018-10-27 07:40:32,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:40:32,635 INFO L93 Difference]: Finished difference Result 6040 states and 8357 transitions. [2018-10-27 07:40:32,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 07:40:32,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 236 [2018-10-27 07:40:32,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:40:32,654 INFO L225 Difference]: With dead ends: 6040 [2018-10-27 07:40:32,654 INFO L226 Difference]: Without dead ends: 3119 [2018-10-27 07:40:32,665 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 236 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 07:40:32,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2018-10-27 07:40:32,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 3117. [2018-10-27 07:40:32,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3117 states. [2018-10-27 07:40:32,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 4252 transitions. [2018-10-27 07:40:32,754 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 4252 transitions. Word has length 236 [2018-10-27 07:40:32,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:40:32,755 INFO L481 AbstractCegarLoop]: Abstraction has 3117 states and 4252 transitions. [2018-10-27 07:40:32,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:40:32,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 4252 transitions. [2018-10-27 07:40:32,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-10-27 07:40:32,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:40:32,764 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:40:32,765 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:40:32,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:40:32,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1343138969, now seen corresponding path program 1 times [2018-10-27 07:40:32,765 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:40:32,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:40:32,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:40:32,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:40:32,767 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:40:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:40:33,414 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:40:33,414 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:40:33,414 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:40:33,415 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 290 with the following transitions: [2018-10-27 07:40:33,415 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [653], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:40:33,424 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:40:33,424 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:40:33,856 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:40:33,857 INFO L272 AbstractInterpreter]: Visited 135 different actions 392 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-27 07:40:33,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:40:33,888 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:40:34,347 INFO L227 lantSequenceWeakener]: Weakened 286 states. On average, predicates are now at 75.43% of their original sizes. [2018-10-27 07:40:34,348 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:40:35,099 INFO L415 sIntCurrentIteration]: We unified 288 AI predicates to 288 [2018-10-27 07:40:35,099 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:40:35,101 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:40:35,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-27 07:40:35,102 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:40:35,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 07:40:35,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 07:40:35,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 07:40:35,103 INFO L87 Difference]: Start difference. First operand 3117 states and 4252 transitions. Second operand 10 states. [2018-10-27 07:42:04,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:42:04,577 INFO L93 Difference]: Finished difference Result 7186 states and 10148 transitions. [2018-10-27 07:42:04,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 07:42:04,578 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 289 [2018-10-27 07:42:04,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:42:04,598 INFO L225 Difference]: With dead ends: 7186 [2018-10-27 07:42:04,599 INFO L226 Difference]: Without dead ends: 4265 [2018-10-27 07:42:04,611 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 297 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-10-27 07:42:04,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4265 states. [2018-10-27 07:42:04,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4265 to 4260. [2018-10-27 07:42:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4260 states. [2018-10-27 07:42:04,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 5587 transitions. [2018-10-27 07:42:04,712 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 5587 transitions. Word has length 289 [2018-10-27 07:42:04,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:42:04,712 INFO L481 AbstractCegarLoop]: Abstraction has 4260 states and 5587 transitions. [2018-10-27 07:42:04,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 07:42:04,713 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 5587 transitions. [2018-10-27 07:42:04,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-10-27 07:42:04,722 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:42:04,722 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:42:04,723 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:42:04,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:42:04,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1291665983, now seen corresponding path program 1 times [2018-10-27 07:42:04,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:42:04,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:42:04,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:42:04,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:42:04,725 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:42:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:42:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-27 07:42:04,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:42:04,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 07:42:04,969 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:42:04,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:42:04,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:42:04,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:42:04,970 INFO L87 Difference]: Start difference. First operand 4260 states and 5587 transitions. Second operand 3 states. [2018-10-27 07:42:06,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:42:06,253 INFO L93 Difference]: Finished difference Result 8328 states and 11552 transitions. [2018-10-27 07:42:06,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:42:06,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 294 [2018-10-27 07:42:06,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:42:06,285 INFO L225 Difference]: With dead ends: 8328 [2018-10-27 07:42:06,285 INFO L226 Difference]: Without dead ends: 5407 [2018-10-27 07:42:06,298 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:42:06,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5407 states. [2018-10-27 07:42:06,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5407 to 5405. [2018-10-27 07:42:06,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5405 states. [2018-10-27 07:42:06,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5405 states to 5405 states and 7129 transitions. [2018-10-27 07:42:06,424 INFO L78 Accepts]: Start accepts. Automaton has 5405 states and 7129 transitions. Word has length 294 [2018-10-27 07:42:06,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:42:06,425 INFO L481 AbstractCegarLoop]: Abstraction has 5405 states and 7129 transitions. [2018-10-27 07:42:06,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:42:06,425 INFO L276 IsEmpty]: Start isEmpty. Operand 5405 states and 7129 transitions. [2018-10-27 07:42:06,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-10-27 07:42:06,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:42:06,441 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:42:06,441 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:42:06,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:42:06,442 INFO L82 PathProgramCache]: Analyzing trace with hash 5547292, now seen corresponding path program 1 times [2018-10-27 07:42:06,442 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:42:06,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:42:06,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:42:06,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:42:06,443 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:42:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:42:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-10-27 07:42:06,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:42:06,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 07:42:06,697 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:42:06,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:42:06,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:42:06,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:42:06,698 INFO L87 Difference]: Start difference. First operand 5405 states and 7129 transitions. Second operand 3 states. [2018-10-27 07:42:08,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:42:08,003 INFO L93 Difference]: Finished difference Result 13111 states and 18378 transitions. [2018-10-27 07:42:08,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:42:08,005 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 331 [2018-10-27 07:42:08,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:42:08,045 INFO L225 Difference]: With dead ends: 13111 [2018-10-27 07:42:08,046 INFO L226 Difference]: Without dead ends: 9045 [2018-10-27 07:42:08,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:42:08,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9045 states. [2018-10-27 07:42:08,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9045 to 9045. [2018-10-27 07:42:08,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9045 states. [2018-10-27 07:42:08,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9045 states to 9045 states and 11812 transitions. [2018-10-27 07:42:08,280 INFO L78 Accepts]: Start accepts. Automaton has 9045 states and 11812 transitions. Word has length 331 [2018-10-27 07:42:08,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:42:08,281 INFO L481 AbstractCegarLoop]: Abstraction has 9045 states and 11812 transitions. [2018-10-27 07:42:08,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:42:08,281 INFO L276 IsEmpty]: Start isEmpty. Operand 9045 states and 11812 transitions. [2018-10-27 07:42:08,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-10-27 07:42:08,311 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:42:08,312 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 07:42:08,312 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:42:08,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:42:08,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1600930957, now seen corresponding path program 1 times [2018-10-27 07:42:08,313 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:42:08,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:42:08,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:42:08,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:42:08,314 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:42:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:42:08,874 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-10-27 07:42:08,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:42:08,874 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:42:08,875 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 387 with the following transitions: [2018-10-27 07:42:08,875 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [931], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [986], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:42:08,881 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:42:08,881 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:42:09,254 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:42:09,254 INFO L272 AbstractInterpreter]: Visited 180 different actions 704 times. Merged at 7 different actions 17 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-27 07:42:09,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:42:09,262 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:42:09,831 INFO L227 lantSequenceWeakener]: Weakened 383 states. On average, predicates are now at 75.32% of their original sizes. [2018-10-27 07:42:09,831 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:42:10,060 INFO L415 sIntCurrentIteration]: We unified 385 AI predicates to 385 [2018-10-27 07:42:10,060 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:42:10,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:42:10,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-10-27 07:42:10,061 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:42:10,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 07:42:10,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 07:42:10,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 07:42:10,062 INFO L87 Difference]: Start difference. First operand 9045 states and 11812 transitions. Second operand 10 states. Received shutdown request... [2018-10-27 07:43:17,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 07:43:17,640 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 07:43:17,646 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 07:43:17,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:43:17 BoogieIcfgContainer [2018-10-27 07:43:17,646 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 07:43:17,647 INFO L168 Benchmark]: Toolchain (without parser) took 244582.56 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 1.7 GB in the end (delta: -283.6 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-27 07:43:17,648 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 07:43:17,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1136.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-27 07:43:17,650 INFO L168 Benchmark]: Boogie Procedure Inliner took 321.74 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 710.9 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -793.4 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-27 07:43:17,651 INFO L168 Benchmark]: Boogie Preprocessor took 147.25 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 07:43:17,651 INFO L168 Benchmark]: RCFGBuilder took 5014.79 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 189.4 MB). Peak memory consumption was 189.4 MB. Max. memory is 7.1 GB. [2018-10-27 07:43:17,652 INFO L168 Benchmark]: TraceAbstraction took 237953.90 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 267.7 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-27 07:43:17,657 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1136.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 321.74 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 710.9 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -793.4 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.25 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5014.79 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 189.4 MB). Peak memory consumption was 189.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237953.90 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 267.7 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 147). Cancelled while BasicCegarLoop was constructing difference of abstraction (9045states) and FLOYD_HOARE automaton (currently 16 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (6326 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 237.8s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 228.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2629 SDtfs, 4542 SDslu, 1880 SDs, 0 SdLazy, 9139 SolverSat, 1952 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 196.1s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 955 GetRequests, 902 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9045occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.9s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9980512562678335 AbsIntWeakeningRatio, 0.09251101321585903 AbsIntAvgWeakeningVarsNumRemoved, 17.980176211453745 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 51 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1947 NumberOfCodeBlocks, 1947 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1939 ConstructedInterpolants, 0 QuantifiedInterpolants, 1300669 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 1175/1265 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown