java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label27_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:14:56,246 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:14:56,248 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:14:56,259 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:14:56,260 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:14:56,262 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:14:56,264 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:14:56,266 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:14:56,268 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:14:56,270 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:14:56,271 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:14:56,272 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:14:56,273 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:14:56,274 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:14:56,276 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:14:56,277 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:14:56,277 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:14:56,280 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:14:56,289 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:14:56,291 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:14:56,292 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:14:56,293 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:14:56,299 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:14:56,299 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:14:56,299 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:14:56,300 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:14:56,301 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:14:56,302 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:14:56,302 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:14:56,303 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:14:56,304 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:14:56,304 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:14:56,305 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:14:56,305 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:14:56,306 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:14:56,306 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:14:56,307 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 18:14:56,321 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:14:56,321 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:14:56,322 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:14:56,322 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:14:56,323 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:14:56,323 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:14:56,323 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:14:56,323 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:14:56,323 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:14:56,324 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:14:56,324 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:14:56,324 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:14:56,324 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:14:56,325 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:14:56,325 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:14:56,325 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:14:56,326 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:14:56,326 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:14:56,326 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:14:56,326 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:14:56,326 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:14:56,327 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:14:56,327 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:14:56,327 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:14:56,327 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:14:56,327 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:14:56,328 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:14:56,328 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:14:56,328 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:14:56,328 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:14:56,328 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:14:56,329 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:14:56,329 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:14:56,329 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:14:56,329 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:14:56,382 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:14:56,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:14:56,408 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:14:56,410 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:14:56,411 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:14:56,412 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label27_false-unreach-call.c [2018-11-07 18:14:56,485 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af7c5cb51/75ce34e433aa4f1398d2ab82ab7e1c44/FLAG85c099990 [2018-11-07 18:14:57,163 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:14:57,164 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label27_false-unreach-call.c [2018-11-07 18:14:57,186 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af7c5cb51/75ce34e433aa4f1398d2ab82ab7e1c44/FLAG85c099990 [2018-11-07 18:14:57,204 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af7c5cb51/75ce34e433aa4f1398d2ab82ab7e1c44 [2018-11-07 18:14:57,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:14:57,221 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:14:57,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:14:57,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:14:57,227 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:14:57,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:14:57" (1/1) ... [2018-11-07 18:14:57,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc8bbfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:14:57, skipping insertion in model container [2018-11-07 18:14:57,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:14:57" (1/1) ... [2018-11-07 18:14:57,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:14:57,342 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:14:58,096 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:14:58,101 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:14:58,357 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:14:58,377 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:14:58,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:14:58 WrapperNode [2018-11-07 18:14:58,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:14:58,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:14:58,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:14:58,380 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:14:58,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:14:58" (1/1) ... [2018-11-07 18:14:58,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:14:58" (1/1) ... [2018-11-07 18:14:58,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:14:58,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:14:58,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:14:58,578 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:14:58,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:14:58" (1/1) ... [2018-11-07 18:14:58,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:14:58" (1/1) ... [2018-11-07 18:14:58,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:14:58" (1/1) ... [2018-11-07 18:14:58,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:14:58" (1/1) ... [2018-11-07 18:14:58,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:14:58" (1/1) ... [2018-11-07 18:14:58,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:14:58" (1/1) ... [2018-11-07 18:14:58,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:14:58" (1/1) ... [2018-11-07 18:14:58,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:14:58,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:14:58,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:14:58,740 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:14:58,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:14:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:14:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:14:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:14:58,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:14:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:14:58,818 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:14:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:14:58,819 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:14:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:14:58,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:14:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:14:58,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:15:05,960 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:15:05,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:15:05 BoogieIcfgContainer [2018-11-07 18:15:05,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:15:05,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:15:05,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:15:05,966 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:15:05,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:14:57" (1/3) ... [2018-11-07 18:15:05,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359a908e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:15:05, skipping insertion in model container [2018-11-07 18:15:05,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:14:58" (2/3) ... [2018-11-07 18:15:05,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359a908e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:15:05, skipping insertion in model container [2018-11-07 18:15:05,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:15:05" (3/3) ... [2018-11-07 18:15:05,971 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label27_false-unreach-call.c [2018-11-07 18:15:05,982 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:15:05,994 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:15:06,016 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:15:06,061 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:15:06,061 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:15:06,061 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:15:06,061 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:15:06,061 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:15:06,062 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:15:06,062 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:15:06,062 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:15:06,097 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 18:15:06,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-07 18:15:06,104 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:15:06,105 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:15:06,107 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:15:06,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:06,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1043347117, now seen corresponding path program 1 times [2018-11-07 18:15:06,117 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:15:06,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:06,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:15:06,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:06,173 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:15:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:15:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:15:06,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:15:06,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:15:06,451 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:15:06,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:15:06,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:15:06,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:15:06,478 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 18:15:10,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:15:10,312 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 18:15:10,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:15:10,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-11-07 18:15:10,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:15:10,338 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 18:15:10,339 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 18:15:10,347 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:15:10,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 18:15:10,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 18:15:10,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 18:15:10,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-11-07 18:15:10,473 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 19 [2018-11-07 18:15:10,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:15:10,474 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-11-07 18:15:10,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:15:10,474 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-11-07 18:15:10,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-11-07 18:15:10,484 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:15:10,485 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:15:10,485 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:15:10,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:10,486 INFO L82 PathProgramCache]: Analyzing trace with hash 306292616, now seen corresponding path program 1 times [2018-11-07 18:15:10,486 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:15:10,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:10,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:15:10,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:10,488 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:15:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:15:10,790 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:15:10,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:15:10,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:15:10,790 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:15:10,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:15:10,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:15:10,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:15:10,793 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-11-07 18:15:16,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:15:16,152 INFO L93 Difference]: Finished difference Result 2189 states and 4061 transitions. [2018-11-07 18:15:16,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:15:16,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2018-11-07 18:15:16,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:15:16,165 INFO L225 Difference]: With dead ends: 2189 [2018-11-07 18:15:16,165 INFO L226 Difference]: Without dead ends: 1451 [2018-11-07 18:15:16,169 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:15:16,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2018-11-07 18:15:16,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1441. [2018-11-07 18:15:16,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1441 states. [2018-11-07 18:15:16,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 2402 transitions. [2018-11-07 18:15:16,237 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 2402 transitions. Word has length 91 [2018-11-07 18:15:16,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:15:16,238 INFO L480 AbstractCegarLoop]: Abstraction has 1441 states and 2402 transitions. [2018-11-07 18:15:16,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:15:16,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 2402 transitions. [2018-11-07 18:15:16,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-07 18:15:16,245 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:15:16,245 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:15:16,245 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:15:16,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:16,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1496486537, now seen corresponding path program 1 times [2018-11-07 18:15:16,246 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:15:16,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:16,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:15:16,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:16,250 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:15:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:15:16,595 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 18:15:16,595 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:15:16,596 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:15:16,597 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 121 with the following transitions: [2018-11-07 18:15:16,599 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [231], [233], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:15:16,653 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:15:16,653 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:15:17,458 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:15:17,460 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:15:17,461 INFO L272 AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 18:15:17,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:17,499 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:15:17,948 INFO L227 lantSequenceWeakener]: Weakened 104 states. On average, predicates are now at 77.56% of their original sizes. [2018-11-07 18:15:17,949 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:15:19,045 INFO L415 sIntCurrentIteration]: We unified 119 AI predicates to 119 [2018-11-07 18:15:19,045 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:15:19,046 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:15:19,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2018-11-07 18:15:19,047 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:15:19,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 18:15:19,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 18:15:19,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:15:19,048 INFO L87 Difference]: Start difference. First operand 1441 states and 2402 transitions. Second operand 10 states. [2018-11-07 18:15:46,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:15:46,529 INFO L93 Difference]: Finished difference Result 3219 states and 5304 transitions. [2018-11-07 18:15:46,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 18:15:46,529 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 120 [2018-11-07 18:15:46,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:15:46,546 INFO L225 Difference]: With dead ends: 3219 [2018-11-07 18:15:46,546 INFO L226 Difference]: Without dead ends: 1784 [2018-11-07 18:15:46,552 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 123 GetRequests, 102 SyntacticMatches, 9 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-07 18:15:46,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2018-11-07 18:15:46,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1779. [2018-11-07 18:15:46,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1779 states. [2018-11-07 18:15:46,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2747 transitions. [2018-11-07 18:15:46,619 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2747 transitions. Word has length 120 [2018-11-07 18:15:46,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:15:46,619 INFO L480 AbstractCegarLoop]: Abstraction has 1779 states and 2747 transitions. [2018-11-07 18:15:46,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 18:15:46,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2747 transitions. [2018-11-07 18:15:46,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-07 18:15:46,631 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:15:46,631 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:15:46,631 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:15:46,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:46,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1831470860, now seen corresponding path program 1 times [2018-11-07 18:15:46,633 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:15:46,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:46,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:15:46,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:46,635 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:15:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:15:47,023 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 18:15:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 91 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:15:47,492 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:15:47,492 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:15:47,493 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-11-07 18:15:47,493 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [231], [233], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:15:47,498 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:15:47,498 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:15:47,594 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:15:47,810 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:15:47,810 INFO L272 AbstractInterpreter]: Visited 109 different actions 314 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:15:47,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:47,818 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:15:48,281 INFO L227 lantSequenceWeakener]: Weakened 54 states. On average, predicates are now at 78.07% of their original sizes. [2018-11-07 18:15:48,281 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:15:49,335 INFO L415 sIntCurrentIteration]: We unified 211 AI predicates to 211 [2018-11-07 18:15:49,335 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:15:49,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:15:49,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [7] total 27 [2018-11-07 18:15:49,336 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:15:49,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 18:15:49,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 18:15:49,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2018-11-07 18:15:49,338 INFO L87 Difference]: Start difference. First operand 1779 states and 2747 transitions. Second operand 22 states. [2018-11-07 18:16:41,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:16:41,568 INFO L93 Difference]: Finished difference Result 4784 states and 7434 transitions. [2018-11-07 18:16:41,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 18:16:41,569 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 212 [2018-11-07 18:16:41,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:16:41,585 INFO L225 Difference]: With dead ends: 4784 [2018-11-07 18:16:41,585 INFO L226 Difference]: Without dead ends: 3349 [2018-11-07 18:16:41,593 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 181 SyntacticMatches, 10 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=254, Invalid=1078, Unknown=0, NotChecked=0, Total=1332 [2018-11-07 18:16:41,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3349 states. [2018-11-07 18:16:41,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3349 to 3339. [2018-11-07 18:16:41,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3339 states. [2018-11-07 18:16:41,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3339 states to 3339 states and 4365 transitions. [2018-11-07 18:16:41,686 INFO L78 Accepts]: Start accepts. Automaton has 3339 states and 4365 transitions. Word has length 212 [2018-11-07 18:16:41,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:16:41,687 INFO L480 AbstractCegarLoop]: Abstraction has 3339 states and 4365 transitions. [2018-11-07 18:16:41,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-07 18:16:41,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3339 states and 4365 transitions. [2018-11-07 18:16:41,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-11-07 18:16:41,691 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:16:41,692 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:16:41,692 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:16:41,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:41,693 INFO L82 PathProgramCache]: Analyzing trace with hash 699461508, now seen corresponding path program 1 times [2018-11-07 18:16:41,693 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:16:41,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:41,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:16:41,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:41,694 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:16:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:16:41,954 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:16:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-11-07 18:16:42,060 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:16:42,060 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:16:42,060 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 249 with the following transitions: [2018-11-07 18:16:42,060 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [231], [233], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:16:42,065 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:16:42,065 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:16:42,152 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:16:42,559 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:16:42,559 INFO L272 AbstractInterpreter]: Visited 136 different actions 395 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:16:42,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:42,597 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:16:43,667 INFO L227 lantSequenceWeakener]: Weakened 54 states. On average, predicates are now at 78.07% of their original sizes. [2018-11-07 18:16:43,667 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:16:44,303 INFO L415 sIntCurrentIteration]: We unified 247 AI predicates to 247 [2018-11-07 18:16:44,303 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:16:44,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:16:44,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [8] total 29 [2018-11-07 18:16:44,304 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:16:44,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 18:16:44,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 18:16:44,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:16:44,306 INFO L87 Difference]: Start difference. First operand 3339 states and 4365 transitions. Second operand 23 states. [2018-11-07 18:17:28,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:17:28,450 INFO L93 Difference]: Finished difference Result 7048 states and 9803 transitions. [2018-11-07 18:17:28,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 18:17:28,450 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 248 [2018-11-07 18:17:28,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:17:28,475 INFO L225 Difference]: With dead ends: 7048 [2018-11-07 18:17:28,476 INFO L226 Difference]: Without dead ends: 4920 [2018-11-07 18:17:28,486 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 263 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=277, Invalid=1205, Unknown=0, NotChecked=0, Total=1482 [2018-11-07 18:17:28,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4920 states. [2018-11-07 18:17:28,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4920 to 4904. [2018-11-07 18:17:28,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4904 states. [2018-11-07 18:17:28,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4904 states to 4904 states and 6001 transitions. [2018-11-07 18:17:28,644 INFO L78 Accepts]: Start accepts. Automaton has 4904 states and 6001 transitions. Word has length 248 [2018-11-07 18:17:28,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:17:28,646 INFO L480 AbstractCegarLoop]: Abstraction has 4904 states and 6001 transitions. [2018-11-07 18:17:28,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 18:17:28,647 INFO L276 IsEmpty]: Start isEmpty. Operand 4904 states and 6001 transitions. [2018-11-07 18:17:28,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-11-07 18:17:28,664 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:17:28,665 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:17:28,665 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:17:28,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:17:28,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1949615196, now seen corresponding path program 1 times [2018-11-07 18:17:28,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:17:28,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:17:28,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:17:28,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:17:28,667 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:17:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:17:29,402 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:17:29,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:17:29,402 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:17:29,403 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 361 with the following transitions: [2018-11-07 18:17:29,403 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [231], [233], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:17:29,409 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:17:29,409 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:17:29,487 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:17:30,407 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:17:30,407 INFO L272 AbstractInterpreter]: Visited 248 different actions 492 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:17:30,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:17:30,412 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:17:30,810 INFO L227 lantSequenceWeakener]: Weakened 130 states. On average, predicates are now at 77.69% of their original sizes. [2018-11-07 18:17:30,811 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:17:32,246 INFO L415 sIntCurrentIteration]: We unified 359 AI predicates to 359 [2018-11-07 18:17:32,247 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:17:32,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:17:32,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-07 18:17:32,247 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:17:32,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 18:17:32,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 18:17:32,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-11-07 18:17:32,249 INFO L87 Difference]: Start difference. First operand 4904 states and 6001 transitions. Second operand 18 states. [2018-11-07 18:17:47,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:17:47,770 INFO L93 Difference]: Finished difference Result 8364 states and 10805 transitions. [2018-11-07 18:17:47,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 18:17:47,771 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 360 [2018-11-07 18:17:47,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:17:47,795 INFO L225 Difference]: With dead ends: 8364 [2018-11-07 18:17:47,795 INFO L226 Difference]: Without dead ends: 5540 [2018-11-07 18:17:47,805 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 375 GetRequests, 296 SyntacticMatches, 47 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2018-11-07 18:17:47,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5540 states. [2018-11-07 18:17:47,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5540 to 5535. [2018-11-07 18:17:47,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5535 states. [2018-11-07 18:17:47,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5535 states to 5535 states and 6666 transitions. [2018-11-07 18:17:47,943 INFO L78 Accepts]: Start accepts. Automaton has 5535 states and 6666 transitions. Word has length 360 [2018-11-07 18:17:47,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:17:47,944 INFO L480 AbstractCegarLoop]: Abstraction has 5535 states and 6666 transitions. [2018-11-07 18:17:47,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 18:17:47,944 INFO L276 IsEmpty]: Start isEmpty. Operand 5535 states and 6666 transitions. [2018-11-07 18:17:47,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-11-07 18:17:47,953 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:17:47,954 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:17:47,954 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:17:47,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:17:47,955 INFO L82 PathProgramCache]: Analyzing trace with hash -514031340, now seen corresponding path program 1 times [2018-11-07 18:17:47,955 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:17:47,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:17:47,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:17:47,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:17:47,956 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:17:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:17:48,351 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:17:48,739 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 18:17:48,739 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:17:48,739 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:17:48,739 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 369 with the following transitions: [2018-11-07 18:17:48,740 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [231], [233], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:17:48,746 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:17:48,746 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:17:48,853 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:17:51,405 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:17:51,405 INFO L272 AbstractInterpreter]: Visited 256 different actions 2022 times. Merged at 7 different actions 51 times. Widened at 1 different actions 3 times. Found 8 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 18:17:51,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:17:51,415 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:17:51,995 INFO L227 lantSequenceWeakener]: Weakened 69 states. On average, predicates are now at 77.89% of their original sizes. [2018-11-07 18:17:51,995 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:17:52,347 INFO L415 sIntCurrentIteration]: We unified 367 AI predicates to 367 [2018-11-07 18:17:52,347 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:17:52,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:17:52,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [4] total 21 [2018-11-07 18:17:52,348 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:17:52,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 18:17:52,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 18:17:52,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2018-11-07 18:17:52,349 INFO L87 Difference]: Start difference. First operand 5535 states and 6666 transitions. Second operand 19 states. [2018-11-07 18:18:19,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:18:19,667 INFO L93 Difference]: Finished difference Result 9904 states and 12897 transitions. [2018-11-07 18:18:19,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 18:18:19,668 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 368 [2018-11-07 18:18:19,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:18:19,696 INFO L225 Difference]: With dead ends: 9904 [2018-11-07 18:18:19,696 INFO L226 Difference]: Without dead ends: 7080 [2018-11-07 18:18:19,707 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 379 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=753, Unknown=0, NotChecked=0, Total=930 [2018-11-07 18:18:19,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7080 states. [2018-11-07 18:18:19,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7080 to 6518. [2018-11-07 18:18:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6518 states. [2018-11-07 18:18:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6518 states to 6518 states and 7835 transitions. [2018-11-07 18:18:19,870 INFO L78 Accepts]: Start accepts. Automaton has 6518 states and 7835 transitions. Word has length 368 [2018-11-07 18:18:19,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:18:19,871 INFO L480 AbstractCegarLoop]: Abstraction has 6518 states and 7835 transitions. [2018-11-07 18:18:19,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 18:18:19,871 INFO L276 IsEmpty]: Start isEmpty. Operand 6518 states and 7835 transitions. [2018-11-07 18:18:19,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-11-07 18:18:19,883 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:18:19,884 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-07 18:18:19,884 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:18:19,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:18:19,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1125597681, now seen corresponding path program 1 times [2018-11-07 18:18:19,885 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:18:19,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:18:19,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:18:19,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:18:19,886 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:18:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:18:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-11-07 18:18:20,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:18:20,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:18:20,247 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:18:20,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:18:20,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:18:20,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:18:20,249 INFO L87 Difference]: Start difference. First operand 6518 states and 7835 transitions. Second operand 4 states. [2018-11-07 18:18:23,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:18:23,481 INFO L93 Difference]: Finished difference Result 12072 states and 16056 transitions. [2018-11-07 18:18:23,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:18:23,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 397 [2018-11-07 18:18:23,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:18:23,521 INFO L225 Difference]: With dead ends: 12072 [2018-11-07 18:18:23,521 INFO L226 Difference]: Without dead ends: 8563 [2018-11-07 18:18:23,541 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:18:23,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8563 states. [2018-11-07 18:18:23,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8563 to 8563. [2018-11-07 18:18:23,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2018-11-07 18:18:23,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 10921 transitions. [2018-11-07 18:18:23,717 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 10921 transitions. Word has length 397 [2018-11-07 18:18:23,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:18:23,718 INFO L480 AbstractCegarLoop]: Abstraction has 8563 states and 10921 transitions. [2018-11-07 18:18:23,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:18:23,718 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 10921 transitions. [2018-11-07 18:18:23,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2018-11-07 18:18:23,744 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:18:23,744 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 18:18:23,745 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:18:23,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:18:23,745 INFO L82 PathProgramCache]: Analyzing trace with hash -64497230, now seen corresponding path program 1 times [2018-11-07 18:18:23,745 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:18:23,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:18:23,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:18:23,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:18:23,747 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:18:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:18:24,152 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:18:25,419 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 59 proven. 480 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-11-07 18:18:25,420 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:18:25,420 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:18:25,420 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 587 with the following transitions: [2018-11-07 18:18:25,421 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [231], [233], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [772], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [824], [825], [829], [833], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:18:25,425 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:18:25,425 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:18:28,333 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:18:28,334 INFO L272 AbstractInterpreter]: Visited 258 different actions 3030 times. Merged at 5 different actions 55 times. Widened at 1 different actions 7 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:18:28,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:18:28,340 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:18:28,933 INFO L227 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 77.5% of their original sizes. [2018-11-07 18:18:28,933 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:18:29,402 INFO L415 sIntCurrentIteration]: We unified 585 AI predicates to 585 [2018-11-07 18:18:29,403 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:18:29,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:18:29,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-07 18:18:29,403 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:18:29,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 18:18:29,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 18:18:29,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:18:29,405 INFO L87 Difference]: Start difference. First operand 8563 states and 10921 transitions. Second operand 23 states. [2018-11-07 18:18:31,789 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 18:18:40,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-07 18:18:40,474 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:18:40,479 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:18:40,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:18:40 BoogieIcfgContainer [2018-11-07 18:18:40,480 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:18:40,481 INFO L168 Benchmark]: Toolchain (without parser) took 223262.93 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 216.6 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-11-07 18:18:40,481 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-11-07 18:18:40,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1156.76 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. [2018-11-07 18:18:40,483 INFO L168 Benchmark]: Boogie Procedure Inliner took 198.05 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 728.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -855.4 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-11-07 18:18:40,484 INFO L168 Benchmark]: Boogie Preprocessor took 162.25 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:18:40,484 INFO L168 Benchmark]: RCFGBuilder took 7221.00 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 272.8 MB). Peak memory consumption was 272.8 MB. Max. memory is 7.1 GB. [2018-11-07 18:18:40,485 INFO L168 Benchmark]: TraceAbstraction took 214517.74 ms. Allocated memory was 2.2 GB in the beginning and 4.5 GB in the end (delta: 2.3 GB). Free memory was 1.9 GB in the beginning and 1.2 GB in the end (delta: 714.6 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-07 18:18:40,489 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1156.76 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 198.05 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 728.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -855.4 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 162.25 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 7221.00 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 272.8 MB). Peak memory consumption was 272.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214517.74 ms. Allocated memory was 2.2 GB in the beginning and 4.5 GB in the end (delta: 2.3 GB). Free memory was 1.9 GB in the beginning and 1.2 GB in the end (delta: 714.6 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 43). Cancelled while BasicCegarLoop was constructing difference of abstraction (8563states) and FLOYD_HOARE automaton (currently 28 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (3022 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 214.4s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 190.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2423 SDtfs, 22227 SDslu, 2073 SDs, 0 SdLazy, 29173 SolverSat, 3839 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 65.6s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 1981 GetRequests, 1726 SyntacticMatches, 69 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1497 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8563occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.3s AbstIntTime, 6 AbstIntIterations, 6 AbstIntStrong, 0.997573319121312 AbsIntWeakeningRatio, 0.0858050847457627 AbsIntAvgWeakeningVarsNumRemoved, 11.31885593220339 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 608 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 2401 NumberOfCodeBlocks, 2401 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2392 ConstructedInterpolants, 0 QuantifiedInterpolants, 2609437 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 797/1334 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown