java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 00:13:20,183 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 00:13:20,185 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 00:13:20,199 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 00:13:20,199 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 00:13:20,200 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 00:13:20,201 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 00:13:20,206 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 00:13:20,209 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 00:13:20,210 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 00:13:20,211 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 00:13:20,211 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 00:13:20,212 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 00:13:20,213 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 00:13:20,214 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 00:13:20,215 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 00:13:20,216 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 00:13:20,218 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 00:13:20,220 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 00:13:20,222 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 00:13:20,223 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 00:13:20,224 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 00:13:20,227 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 00:13:20,235 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 00:13:20,262 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 00:13:20,263 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 00:13:20,265 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 00:13:20,266 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 00:13:20,266 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 00:13:20,266 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 00:13:20,266 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 00:13:20,266 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 00:13:20,267 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 00:13:20,267 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 00:13:20,267 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 00:13:20,267 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 00:13:20,267 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 00:13:20,268 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 00:13:20,269 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 00:13:20,270 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 00:13:20,270 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 00:13:20,270 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 00:13:20,270 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 00:13:20,270 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 00:13:20,270 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 00:13:20,272 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 00:13:20,272 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 00:13:20,272 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 00:13:20,272 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 00:13:20,272 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 00:13:20,273 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:13:20,273 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 00:13:20,273 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 00:13:20,273 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 00:13:20,273 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 00:13:20,273 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 00:13:20,274 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 00:13:20,274 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 00:13:20,275 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 00:13:20,275 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 00:13:20,342 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 00:13:20,358 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 00:13:20,364 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 00:13:20,366 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 00:13:20,366 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 00:13:20,368 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label18_true-unreach-call.c [2018-10-25 00:13:20,437 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9115199a4/9a350cf8a5e54665a9f348c9bfac08b5/FLAG5041663b8 [2018-10-25 00:13:21,123 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 00:13:21,124 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label18_true-unreach-call.c [2018-10-25 00:13:21,143 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9115199a4/9a350cf8a5e54665a9f348c9bfac08b5/FLAG5041663b8 [2018-10-25 00:13:21,160 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9115199a4/9a350cf8a5e54665a9f348c9bfac08b5 [2018-10-25 00:13:21,171 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 00:13:21,173 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 00:13:21,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 00:13:21,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 00:13:21,180 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 00:13:21,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:13:21" (1/1) ... [2018-10-25 00:13:21,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6449f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:21, skipping insertion in model container [2018-10-25 00:13:21,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:13:21" (1/1) ... [2018-10-25 00:13:21,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 00:13:21,285 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 00:13:22,075 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:13:22,082 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 00:13:22,308 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:13:22,334 INFO L193 MainTranslator]: Completed translation [2018-10-25 00:13:22,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:22 WrapperNode [2018-10-25 00:13:22,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 00:13:22,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 00:13:22,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 00:13:22,337 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 00:13:22,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:22" (1/1) ... [2018-10-25 00:13:22,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:22" (1/1) ... [2018-10-25 00:13:22,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 00:13:22,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 00:13:22,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 00:13:22,672 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 00:13:22,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:22" (1/1) ... [2018-10-25 00:13:22,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:22" (1/1) ... [2018-10-25 00:13:22,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:22" (1/1) ... [2018-10-25 00:13:22,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:22" (1/1) ... [2018-10-25 00:13:22,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:22" (1/1) ... [2018-10-25 00:13:22,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:22" (1/1) ... [2018-10-25 00:13:22,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:22" (1/1) ... [2018-10-25 00:13:22,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 00:13:22,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 00:13:22,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 00:13:22,839 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 00:13:22,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:13:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 00:13:22,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 00:13:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 00:13:22,913 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 00:13:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 00:13:22,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 00:13:22,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 00:13:22,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 00:13:27,905 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 00:13:27,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:13:27 BoogieIcfgContainer [2018-10-25 00:13:27,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 00:13:27,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 00:13:27,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 00:13:27,911 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 00:13:27,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 12:13:21" (1/3) ... [2018-10-25 00:13:27,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65197e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:13:27, skipping insertion in model container [2018-10-25 00:13:27,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:22" (2/3) ... [2018-10-25 00:13:27,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65197e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:13:27, skipping insertion in model container [2018-10-25 00:13:27,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:13:27" (3/3) ... [2018-10-25 00:13:27,918 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label18_true-unreach-call.c [2018-10-25 00:13:27,928 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 00:13:27,938 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 00:13:27,953 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 00:13:27,995 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 00:13:27,995 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 00:13:27,995 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 00:13:27,995 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 00:13:27,995 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 00:13:27,996 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 00:13:27,996 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 00:13:27,996 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 00:13:28,028 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-25 00:13:28,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-25 00:13:28,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:28,052 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:28,055 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:28,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:28,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1820417999, now seen corresponding path program 1 times [2018-10-25 00:13:28,063 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:28,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:28,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:28,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:28,113 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:29,069 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:13:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:29,290 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:29,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:13:29,291 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:29,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:13:29,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:13:29,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:13:29,319 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-25 00:13:31,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:31,704 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-10-25 00:13:31,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:13:31,707 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2018-10-25 00:13:31,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:31,731 INFO L225 Difference]: With dead ends: 848 [2018-10-25 00:13:31,731 INFO L226 Difference]: Without dead ends: 534 [2018-10-25 00:13:31,740 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:13:31,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-10-25 00:13:31,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-10-25 00:13:31,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-10-25 00:13:31,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-10-25 00:13:31,827 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 210 [2018-10-25 00:13:31,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:31,828 INFO L481 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-10-25 00:13:31,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:13:31,829 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-10-25 00:13:31,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-25 00:13:31,838 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:31,839 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:31,839 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:31,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:31,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1878986571, now seen corresponding path program 1 times [2018-10-25 00:13:31,840 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:31,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:31,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:31,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:31,842 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:32,445 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:32,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:32,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:13:32,446 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:32,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:13:32,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:13:32,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:13:32,452 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-10-25 00:13:34,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:34,313 INFO L93 Difference]: Finished difference Result 1493 states and 2512 transitions. [2018-10-25 00:13:34,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:13:34,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2018-10-25 00:13:34,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:34,322 INFO L225 Difference]: With dead ends: 1493 [2018-10-25 00:13:34,323 INFO L226 Difference]: Without dead ends: 967 [2018-10-25 00:13:34,329 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:13:34,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2018-10-25 00:13:34,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 951. [2018-10-25 00:13:34,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2018-10-25 00:13:34,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1540 transitions. [2018-10-25 00:13:34,376 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1540 transitions. Word has length 223 [2018-10-25 00:13:34,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:34,376 INFO L481 AbstractCegarLoop]: Abstraction has 951 states and 1540 transitions. [2018-10-25 00:13:34,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:13:34,376 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1540 transitions. [2018-10-25 00:13:34,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-25 00:13:34,383 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:34,383 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:34,384 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:34,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:34,384 INFO L82 PathProgramCache]: Analyzing trace with hash -463761996, now seen corresponding path program 1 times [2018-10-25 00:13:34,385 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:34,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:34,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:34,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:34,386 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:34,888 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:34,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:34,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:13:34,889 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:34,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:13:34,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:13:34,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:13:34,891 INFO L87 Difference]: Start difference. First operand 951 states and 1540 transitions. Second operand 6 states. [2018-10-25 00:13:38,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:38,081 INFO L93 Difference]: Finished difference Result 2784 states and 4694 transitions. [2018-10-25 00:13:38,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 00:13:38,081 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 238 [2018-10-25 00:13:38,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:38,098 INFO L225 Difference]: With dead ends: 2784 [2018-10-25 00:13:38,098 INFO L226 Difference]: Without dead ends: 1839 [2018-10-25 00:13:38,103 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 00:13:38,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2018-10-25 00:13:38,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1809. [2018-10-25 00:13:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1809 states. [2018-10-25 00:13:38,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2782 transitions. [2018-10-25 00:13:38,179 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2782 transitions. Word has length 238 [2018-10-25 00:13:38,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:38,180 INFO L481 AbstractCegarLoop]: Abstraction has 1809 states and 2782 transitions. [2018-10-25 00:13:38,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:13:38,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2782 transitions. [2018-10-25 00:13:38,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-10-25 00:13:38,190 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:38,191 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:38,191 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:38,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:38,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1286729823, now seen corresponding path program 1 times [2018-10-25 00:13:38,192 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:38,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:38,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:38,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:38,193 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:38,712 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:38,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:13:38,713 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:13:38,714 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 258 with the following transitions: [2018-10-25 00:13:38,717 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1137], [1141], [1143], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:13:38,786 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:13:38,787 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:13:41,654 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:13:41,656 INFO L272 AbstractInterpreter]: Visited 214 different actions 422 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:13:41,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:41,698 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:13:44,226 INFO L232 lantSequenceWeakener]: Weakened 254 states. On average, predicates are now at 74.61% of their original sizes. [2018-10-25 00:13:44,227 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:13:44,958 INFO L413 sIntCurrentIteration]: We have 256 unified AI predicates [2018-10-25 00:13:44,958 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:13:44,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:13:44,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-25 00:13:44,959 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:44,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-25 00:13:44,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-25 00:13:44,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-10-25 00:13:44,961 INFO L87 Difference]: Start difference. First operand 1809 states and 2782 transitions. Second operand 20 states. [2018-10-25 00:15:02,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:15:02,333 INFO L93 Difference]: Finished difference Result 4034 states and 6121 transitions. [2018-10-25 00:15:02,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 00:15:02,333 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 257 [2018-10-25 00:15:02,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:15:02,346 INFO L225 Difference]: With dead ends: 4034 [2018-10-25 00:15:02,346 INFO L226 Difference]: Without dead ends: 2231 [2018-10-25 00:15:02,352 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 265 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=181, Invalid=631, Unknown=0, NotChecked=0, Total=812 [2018-10-25 00:15:02,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2018-10-25 00:15:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2228. [2018-10-25 00:15:02,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2228 states. [2018-10-25 00:15:02,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3229 transitions. [2018-10-25 00:15:02,414 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3229 transitions. Word has length 257 [2018-10-25 00:15:02,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:15:02,414 INFO L481 AbstractCegarLoop]: Abstraction has 2228 states and 3229 transitions. [2018-10-25 00:15:02,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-25 00:15:02,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3229 transitions. [2018-10-25 00:15:02,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-10-25 00:15:02,425 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:15:02,425 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:15:02,426 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:15:02,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:02,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1350497136, now seen corresponding path program 1 times [2018-10-25 00:15:02,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:15:02,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:02,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:15:02,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:02,428 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:15:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:15:02,926 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:15:02,927 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:15:02,927 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:15:02,927 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 258 with the following transitions: [2018-10-25 00:15:02,928 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1137], [1141], [1143], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:15:02,950 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:15:02,951 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:15:05,790 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:15:05,791 INFO L272 AbstractInterpreter]: Visited 214 different actions 421 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:15:05,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:05,795 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:15:09,694 INFO L232 lantSequenceWeakener]: Weakened 3 states. On average, predicates are now at 76.74% of their original sizes. [2018-10-25 00:15:09,695 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:15:17,938 INFO L413 sIntCurrentIteration]: We have 256 unified AI predicates [2018-10-25 00:15:17,938 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:15:17,939 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:15:17,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-25 00:15:17,939 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:15:17,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-25 00:15:17,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-25 00:15:17,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-10-25 00:15:17,941 INFO L87 Difference]: Start difference. First operand 2228 states and 3229 transitions. Second operand 13 states. [2018-10-25 00:16:37,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:16:37,801 INFO L93 Difference]: Finished difference Result 5406 states and 7979 transitions. [2018-10-25 00:16:37,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-25 00:16:37,801 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 257 [2018-10-25 00:16:37,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:16:37,819 INFO L225 Difference]: With dead ends: 5406 [2018-10-25 00:16:37,819 INFO L226 Difference]: Without dead ends: 3603 [2018-10-25 00:16:37,826 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 261 GetRequests, 109 SyntacticMatches, 136 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2018-10-25 00:16:37,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3603 states. [2018-10-25 00:16:37,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3603 to 3596. [2018-10-25 00:16:37,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3596 states. [2018-10-25 00:16:37,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5061 transitions. [2018-10-25 00:16:37,921 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5061 transitions. Word has length 257 [2018-10-25 00:16:37,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:16:37,922 INFO L481 AbstractCegarLoop]: Abstraction has 3596 states and 5061 transitions. [2018-10-25 00:16:37,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-25 00:16:37,922 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5061 transitions. [2018-10-25 00:16:37,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-25 00:16:37,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:16:37,937 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:16:37,937 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:16:37,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:37,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1876536729, now seen corresponding path program 1 times [2018-10-25 00:16:37,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:16:37,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:37,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:16:37,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:37,939 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:16:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:16:38,753 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-25 00:16:38,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:16:38,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:16:38,754 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:16:38,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:16:38,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:16:38,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:16:38,755 INFO L87 Difference]: Start difference. First operand 3596 states and 5061 transitions. Second operand 6 states. [2018-10-25 00:16:40,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:16:40,842 INFO L93 Difference]: Finished difference Result 7280 states and 10629 transitions. [2018-10-25 00:16:40,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-25 00:16:40,844 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 258 [2018-10-25 00:16:40,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:16:40,864 INFO L225 Difference]: With dead ends: 7280 [2018-10-25 00:16:40,864 INFO L226 Difference]: Without dead ends: 4290 [2018-10-25 00:16:40,877 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:16:40,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4290 states. [2018-10-25 00:16:40,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4290 to 4169. [2018-10-25 00:16:40,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4169 states. [2018-10-25 00:16:40,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4169 states to 4169 states and 5645 transitions. [2018-10-25 00:16:40,978 INFO L78 Accepts]: Start accepts. Automaton has 4169 states and 5645 transitions. Word has length 258 [2018-10-25 00:16:40,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:16:40,979 INFO L481 AbstractCegarLoop]: Abstraction has 4169 states and 5645 transitions. [2018-10-25 00:16:40,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:16:40,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4169 states and 5645 transitions. [2018-10-25 00:16:40,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-10-25 00:16:40,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:16:40,999 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:16:40,999 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:16:41,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:41,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1876650612, now seen corresponding path program 1 times [2018-10-25 00:16:41,000 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:16:41,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:41,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:16:41,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:41,001 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:16:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:16:41,449 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 156 proven. 55 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-25 00:16:41,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:16:41,450 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:16:41,450 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 339 with the following transitions: [2018-10-25 00:16:41,451 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1137], [1141], [1143], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:16:41,458 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:16:41,459 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:16:46,991 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:16:46,992 INFO L272 AbstractInterpreter]: Visited 217 different actions 658 times. Merged at 9 different actions 31 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 4 different actions. Largest state had 88 variables. [2018-10-25 00:16:46,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:46,999 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:16:46,999 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:16:46,999 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:16:47,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:16:47,008 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:16:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:16:47,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:16:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-10-25 00:16:47,647 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:16:47,945 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 151 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-25 00:16:47,968 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:16:47,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-10-25 00:16:47,968 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:16:47,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-25 00:16:47,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-25 00:16:47,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:16:47,971 INFO L87 Difference]: Start difference. First operand 4169 states and 5645 transitions. Second operand 12 states. [2018-10-25 00:16:55,142 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2018-10-25 00:16:59,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:16:59,105 INFO L93 Difference]: Finished difference Result 20122 states and 31003 transitions. [2018-10-25 00:16:59,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-25 00:16:59,105 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 338 [2018-10-25 00:16:59,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:16:59,228 INFO L225 Difference]: With dead ends: 20122 [2018-10-25 00:16:59,229 INFO L226 Difference]: Without dead ends: 16806 [2018-10-25 00:16:59,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 718 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1755 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=856, Invalid=4400, Unknown=0, NotChecked=0, Total=5256 [2018-10-25 00:16:59,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16806 states. [2018-10-25 00:16:59,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16806 to 16372. [2018-10-25 00:16:59,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16372 states. [2018-10-25 00:16:59,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16372 states to 16372 states and 22819 transitions. [2018-10-25 00:16:59,940 INFO L78 Accepts]: Start accepts. Automaton has 16372 states and 22819 transitions. Word has length 338 [2018-10-25 00:16:59,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:16:59,940 INFO L481 AbstractCegarLoop]: Abstraction has 16372 states and 22819 transitions. [2018-10-25 00:16:59,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-25 00:16:59,941 INFO L276 IsEmpty]: Start isEmpty. Operand 16372 states and 22819 transitions. [2018-10-25 00:16:59,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-25 00:16:59,990 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:16:59,990 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:16:59,991 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:16:59,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:59,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1357330266, now seen corresponding path program 1 times [2018-10-25 00:16:59,991 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:16:59,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:59,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:16:59,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:59,993 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:00,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:17:00,703 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:17:00,704 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 340 with the following transitions: [2018-10-25 00:17:00,704 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1137], [1141], [1143], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:17:00,715 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:17:00,716 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:17:08,382 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:17:08,382 INFO L272 AbstractInterpreter]: Visited 214 different actions 641 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:17:08,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:08,425 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:17:20,173 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 90.7% of their original sizes. [2018-10-25 00:17:20,173 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-25 00:17:22,716 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:17:22,721 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:17:22,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:17:22 BoogieIcfgContainer [2018-10-25 00:17:22,721 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:17:22,722 INFO L168 Benchmark]: Toolchain (without parser) took 241550.50 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 1.1 GB in the end (delta: 358.5 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-10-25 00:17:22,724 INFO L168 Benchmark]: CDTParser took 0.27 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. [2018-10-25 00:17:22,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1161.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:22,726 INFO L168 Benchmark]: Boogie Procedure Inliner took 334.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -871.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:22,726 INFO L168 Benchmark]: Boogie Preprocessor took 167.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:22,727 INFO L168 Benchmark]: RCFGBuilder took 5067.80 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 261.2 MB). Peak memory consumption was 261.2 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:22,728 INFO L168 Benchmark]: TraceAbstraction took 234813.90 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.1 GB in the end (delta: 870.1 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-25 00:17:22,733 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1161.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 334.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -871.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 167.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5067.80 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 261.2 MB). Peak memory consumption was 261.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234813.90 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.1 GB in the end (delta: 870.1 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1644]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1644). Cancelled while BasicCegarLoop was analyzing trace of length 340 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 234.7s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 178.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1432 SDtfs, 12982 SDslu, 2157 SDs, 0 SdLazy, 19250 SolverSat, 3328 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 133.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1345 GetRequests, 1075 SyntacticMatches, 143 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2596 ImplicationChecksByTransitivity, 11.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16372occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 19.1s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9992417705122976 AbsIntWeakeningRatio, 0.2223529411764706 AbsIntAvgWeakeningVarsNumRemoved, 0.6670588235294118 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 613 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 2119 NumberOfCodeBlocks, 2119 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2448 ConstructedInterpolants, 0 QuantifiedInterpolants, 2219022 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1455 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 824/896 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown