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_label18_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:12:56,162 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:12:56,164 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:12:56,180 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:12:56,180 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:12:56,181 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:12:56,183 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:12:56,185 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:12:56,188 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:12:56,190 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:12:56,192 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:12:56,192 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:12:56,193 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:12:56,194 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:12:56,198 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:12:56,199 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:12:56,199 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:12:56,208 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:12:56,213 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:12:56,215 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:12:56,217 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:12:56,219 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:12:56,222 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:12:56,222 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:12:56,223 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:12:56,223 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:12:56,225 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:12:56,225 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:12:56,226 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:12:56,228 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:12:56,228 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:12:56,229 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:12:56,229 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:12:56,229 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:12:56,232 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:12:56,233 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:12:56,233 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 18:12:56,261 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:12:56,261 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:12:56,262 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:12:56,262 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:12:56,262 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:12:56,263 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:12:56,263 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:12:56,263 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:12:56,263 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:12:56,264 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:12:56,264 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:12:56,264 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:12:56,264 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:12:56,265 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:12:56,265 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:12:56,265 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:12:56,265 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:12:56,266 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:12:56,266 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:12:56,266 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:12:56,266 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:12:56,266 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:12:56,267 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:12:56,267 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:12:56,267 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:12:56,267 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:12:56,267 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:12:56,268 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:12:56,268 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:12:56,268 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:12:56,268 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:12:56,268 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:12:56,268 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:12:56,269 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:12:56,269 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:12:56,323 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:12:56,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:12:56,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:12:56,342 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:12:56,343 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:12:56,343 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label18_false-unreach-call.c [2018-11-07 18:12:56,407 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e55f70978/9954f4a1a2544f9aa9b7694c71e338d7/FLAG9c0c68d87 [2018-11-07 18:12:57,097 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:12:57,100 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label18_false-unreach-call.c [2018-11-07 18:12:57,122 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e55f70978/9954f4a1a2544f9aa9b7694c71e338d7/FLAG9c0c68d87 [2018-11-07 18:12:57,142 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e55f70978/9954f4a1a2544f9aa9b7694c71e338d7 [2018-11-07 18:12:57,155 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:12:57,157 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:12:57,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:12:57,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:12:57,165 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:12:57,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:12:57" (1/1) ... [2018-11-07 18:12:57,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3164a125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:57, skipping insertion in model container [2018-11-07 18:12:57,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:12:57" (1/1) ... [2018-11-07 18:12:57,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:12:57,280 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:12:58,074 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:12:58,079 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:12:58,385 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:12:58,408 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:12:58,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:58 WrapperNode [2018-11-07 18:12:58,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:12:58,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:12:58,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:12:58,411 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:12:58,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:58" (1/1) ... [2018-11-07 18:12:58,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:58" (1/1) ... [2018-11-07 18:12:58,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:12:58,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:12:58,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:12:58,617 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:12:58,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:58" (1/1) ... [2018-11-07 18:12:58,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:58" (1/1) ... [2018-11-07 18:12:58,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:58" (1/1) ... [2018-11-07 18:12:58,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:58" (1/1) ... [2018-11-07 18:12:58,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:58" (1/1) ... [2018-11-07 18:12:58,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:58" (1/1) ... [2018-11-07 18:12:58,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:58" (1/1) ... [2018-11-07 18:12:58,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:12:58,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:12:58,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:12:58,770 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:12:58,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:58" (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 18:12:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:12:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:12:58,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:12:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:12:58,839 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:12:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:12:58,839 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:12:58,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:12:58,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:12:58,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:12:58,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:13:04,395 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:13:04,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:13:04 BoogieIcfgContainer [2018-11-07 18:13:04,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:13:04,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:13:04,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:13:04,401 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:13:04,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:12:57" (1/3) ... [2018-11-07 18:13:04,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c0f1b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:13:04, skipping insertion in model container [2018-11-07 18:13:04,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:58" (2/3) ... [2018-11-07 18:13:04,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c0f1b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:13:04, skipping insertion in model container [2018-11-07 18:13:04,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:13:04" (3/3) ... [2018-11-07 18:13:04,406 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label18_false-unreach-call.c [2018-11-07 18:13:04,416 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:13:04,425 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:13:04,441 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:13:04,481 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:13:04,482 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:13:04,482 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:13:04,482 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:13:04,482 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:13:04,482 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:13:04,482 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:13:04,483 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:13:04,524 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 18:13:04,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-07 18:13:04,531 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:13:04,532 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:13:04,534 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:13:04,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:04,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1130259964, now seen corresponding path program 1 times [2018-11-07 18:13:04,542 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:13:04,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:04,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:13:04,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:04,591 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:13:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:13:04,909 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:13:05,010 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 18:13:05,013 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:13:05,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:13:05,013 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:13:05,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:13:05,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:13:05,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:13:05,038 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 18:13:08,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:13:08,625 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 18:13:08,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:13:08,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-07 18:13:08,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:13:08,657 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 18:13:08,658 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 18:13:08,667 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:13:08,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 18:13:08,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 18:13:08,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 18:13:08,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-11-07 18:13:08,787 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 14 [2018-11-07 18:13:08,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:13:08,788 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-11-07 18:13:08,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:13:08,788 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-11-07 18:13:08,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-11-07 18:13:08,793 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:13:08,793 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:13:08,793 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:13:08,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:08,794 INFO L82 PathProgramCache]: Analyzing trace with hash -3982677, now seen corresponding path program 1 times [2018-11-07 18:13:08,794 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:13:08,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:08,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:13:08,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:08,796 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:13:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:13:09,127 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:13:09,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:13:09,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:13:09,128 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:13:09,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:13:09,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:13:09,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:13:09,131 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 6 states. [2018-11-07 18:13:15,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:13:15,086 INFO L93 Difference]: Finished difference Result 2191 states and 4077 transitions. [2018-11-07 18:13:15,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:13:15,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2018-11-07 18:13:15,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:13:15,100 INFO L225 Difference]: With dead ends: 2191 [2018-11-07 18:13:15,100 INFO L226 Difference]: Without dead ends: 1453 [2018-11-07 18:13:15,104 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:13:15,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2018-11-07 18:13:15,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1436. [2018-11-07 18:13:15,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-11-07 18:13:15,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2556 transitions. [2018-11-07 18:13:15,164 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2556 transitions. Word has length 85 [2018-11-07 18:13:15,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:13:15,165 INFO L480 AbstractCegarLoop]: Abstraction has 1436 states and 2556 transitions. [2018-11-07 18:13:15,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:13:15,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2556 transitions. [2018-11-07 18:13:15,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-11-07 18:13:15,168 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:13:15,168 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:13:15,169 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:13:15,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:15,169 INFO L82 PathProgramCache]: Analyzing trace with hash 461895267, now seen corresponding path program 1 times [2018-11-07 18:13:15,169 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:13:15,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:15,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:13:15,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:15,171 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:13:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:13:15,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:13:15,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:13:15,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:13:15,372 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:13:15,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:13:15,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:13:15,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:13:15,373 INFO L87 Difference]: Start difference. First operand 1436 states and 2556 transitions. Second operand 6 states. [2018-11-07 18:13:20,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:13:20,130 INFO L93 Difference]: Finished difference Result 3925 states and 7037 transitions. [2018-11-07 18:13:20,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:13:20,131 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2018-11-07 18:13:20,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:13:20,146 INFO L225 Difference]: With dead ends: 3925 [2018-11-07 18:13:20,146 INFO L226 Difference]: Without dead ends: 2495 [2018-11-07 18:13:20,154 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:13:20,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2018-11-07 18:13:20,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2466. [2018-11-07 18:13:20,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2466 states. [2018-11-07 18:13:20,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4043 transitions. [2018-11-07 18:13:20,243 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4043 transitions. Word has length 89 [2018-11-07 18:13:20,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:13:20,243 INFO L480 AbstractCegarLoop]: Abstraction has 2466 states and 4043 transitions. [2018-11-07 18:13:20,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:13:20,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4043 transitions. [2018-11-07 18:13:20,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-07 18:13:20,247 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:13:20,251 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:13:20,252 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:13:20,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:20,252 INFO L82 PathProgramCache]: Analyzing trace with hash -179153430, now seen corresponding path program 1 times [2018-11-07 18:13:20,252 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:13:20,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:20,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:13:20,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:20,254 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:13:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:13:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:13:20,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:13:20,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:13:20,514 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:13:20,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:13:20,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:13:20,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:13:20,516 INFO L87 Difference]: Start difference. First operand 2466 states and 4043 transitions. Second operand 6 states. [2018-11-07 18:13:24,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:13:24,792 INFO L93 Difference]: Finished difference Result 6972 states and 11519 transitions. [2018-11-07 18:13:24,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:13:24,793 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2018-11-07 18:13:24,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:13:24,820 INFO L225 Difference]: With dead ends: 6972 [2018-11-07 18:13:24,820 INFO L226 Difference]: Without dead ends: 4512 [2018-11-07 18:13:24,838 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:13:24,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4512 states. [2018-11-07 18:13:24,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4512 to 4480. [2018-11-07 18:13:24,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4480 states. [2018-11-07 18:13:24,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 6527 transitions. [2018-11-07 18:13:24,955 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 6527 transitions. Word has length 120 [2018-11-07 18:13:24,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:13:24,956 INFO L480 AbstractCegarLoop]: Abstraction has 4480 states and 6527 transitions. [2018-11-07 18:13:24,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:13:24,956 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 6527 transitions. [2018-11-07 18:13:24,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-11-07 18:13:24,959 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:13:24,960 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:13:24,960 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:13:24,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:24,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1769086126, now seen corresponding path program 1 times [2018-11-07 18:13:24,960 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:13:24,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:24,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:13:24,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:24,962 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:13:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:13:25,566 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:13:25,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:13:25,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:13:25,567 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:13:25,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:13:25,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:13:25,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:13:25,571 INFO L87 Difference]: Start difference. First operand 4480 states and 6527 transitions. Second operand 6 states. [2018-11-07 18:13:31,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:13:31,546 INFO L93 Difference]: Finished difference Result 16709 states and 25873 transitions. [2018-11-07 18:13:31,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:13:31,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-11-07 18:13:31,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:13:31,624 INFO L225 Difference]: With dead ends: 16709 [2018-11-07 18:13:31,625 INFO L226 Difference]: Without dead ends: 12235 [2018-11-07 18:13:31,672 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 18:13:31,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12235 states. [2018-11-07 18:13:31,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12235 to 12228. [2018-11-07 18:13:31,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12228 states. [2018-11-07 18:13:32,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12228 states to 12228 states and 17609 transitions. [2018-11-07 18:13:32,026 INFO L78 Accepts]: Start accepts. Automaton has 12228 states and 17609 transitions. Word has length 164 [2018-11-07 18:13:32,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:13:32,027 INFO L480 AbstractCegarLoop]: Abstraction has 12228 states and 17609 transitions. [2018-11-07 18:13:32,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:13:32,027 INFO L276 IsEmpty]: Start isEmpty. Operand 12228 states and 17609 transitions. [2018-11-07 18:13:32,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-11-07 18:13:32,039 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:13:32,040 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:32,040 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:13:32,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:32,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1438063964, now seen corresponding path program 1 times [2018-11-07 18:13:32,041 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:13:32,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:32,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:13:32,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:32,042 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:13:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:13:32,344 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:13:32,421 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:13:32,421 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:13:32,422 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:13:32,422 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-11-07 18:13:32,425 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [191], [193], [196], [204], [212], [220], [228], [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], [680], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [992], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:13:32,474 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:13:32,474 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:13:33,405 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:13:33,407 INFO L272 AbstractInterpreter]: Visited 155 different actions 155 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 18:13:33,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:33,461 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:13:34,519 INFO L227 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 77.3% of their original sizes. [2018-11-07 18:13:34,520 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:13:36,300 INFO L415 sIntCurrentIteration]: We unified 235 AI predicates to 235 [2018-11-07 18:13:36,300 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:13:36,301 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:13:36,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2018-11-07 18:13:36,301 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:13:36,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 18:13:36,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 18:13:36,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 18:13:36,303 INFO L87 Difference]: Start difference. First operand 12228 states and 17609 transitions. Second operand 11 states. [2018-11-07 18:13:41,479 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:14:04,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:14:04,739 INFO L93 Difference]: Finished difference Result 24793 states and 35700 transitions. [2018-11-07 18:14:04,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 18:14:04,739 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 236 [2018-11-07 18:14:04,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:14:04,811 INFO L225 Difference]: With dead ends: 24793 [2018-11-07 18:14:04,812 INFO L226 Difference]: Without dead ends: 12571 [2018-11-07 18:14:04,872 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 240 GetRequests, 190 SyntacticMatches, 36 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-07 18:14:04,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12571 states. [2018-11-07 18:14:05,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12571 to 12566. [2018-11-07 18:14:05,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12566 states. [2018-11-07 18:14:05,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12566 states to 12566 states and 17957 transitions. [2018-11-07 18:14:05,949 INFO L78 Accepts]: Start accepts. Automaton has 12566 states and 17957 transitions. Word has length 236 [2018-11-07 18:14:05,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:14:05,950 INFO L480 AbstractCegarLoop]: Abstraction has 12566 states and 17957 transitions. [2018-11-07 18:14:05,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 18:14:05,950 INFO L276 IsEmpty]: Start isEmpty. Operand 12566 states and 17957 transitions. [2018-11-07 18:14:05,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-11-07 18:14:05,964 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:14:05,964 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:05,965 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:14:05,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:14:05,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1495994740, now seen corresponding path program 1 times [2018-11-07 18:14:05,965 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:14:05,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:14:05,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:14:05,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:14:05,967 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:14:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:14:06,281 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:14:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 22 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 18:14:06,683 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:14:06,683 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:14:06,683 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-11-07 18:14:06,684 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [191], [193], [196], [204], [212], [220], [228], [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], [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], [992], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:14:06,689 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:14:06,690 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:14:06,745 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:14:07,223 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:14:07,223 INFO L272 AbstractInterpreter]: Visited 158 different actions 461 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 18:14:07,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:14:07,262 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:14:07,795 INFO L227 lantSequenceWeakener]: Weakened 98 states. On average, predicates are now at 77.48% of their original sizes. [2018-11-07 18:14:07,795 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:14:09,269 INFO L415 sIntCurrentIteration]: We unified 255 AI predicates to 255 [2018-11-07 18:14:09,269 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:14:09,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:14:09,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-07 18:14:09,270 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:14:09,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 18:14:09,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 18:14:09,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:14:09,272 INFO L87 Difference]: Start difference. First operand 12566 states and 17957 transitions. Second operand 23 states. [2018-11-07 18:15:03,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:15:03,143 INFO L93 Difference]: Finished difference Result 28932 states and 41724 transitions. [2018-11-07 18:15:03,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-07 18:15:03,143 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 256 [2018-11-07 18:15:03,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:15:03,214 INFO L225 Difference]: With dead ends: 28932 [2018-11-07 18:15:03,214 INFO L226 Difference]: Without dead ends: 16710 [2018-11-07 18:15:03,256 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 275 GetRequests, 224 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=325, Invalid=1481, Unknown=0, NotChecked=0, Total=1806 [2018-11-07 18:15:03,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16710 states. [2018-11-07 18:15:03,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16710 to 16307. [2018-11-07 18:15:03,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16307 states. [2018-11-07 18:15:03,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16307 states to 16307 states and 21907 transitions. [2018-11-07 18:15:03,649 INFO L78 Accepts]: Start accepts. Automaton has 16307 states and 21907 transitions. Word has length 256 [2018-11-07 18:15:03,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:15:03,650 INFO L480 AbstractCegarLoop]: Abstraction has 16307 states and 21907 transitions. [2018-11-07 18:15:03,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 18:15:03,650 INFO L276 IsEmpty]: Start isEmpty. Operand 16307 states and 21907 transitions. [2018-11-07 18:15:03,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-11-07 18:15:03,665 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:15:03,666 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 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] [2018-11-07 18:15:03,666 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:15:03,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:03,666 INFO L82 PathProgramCache]: Analyzing trace with hash -729541643, now seen corresponding path program 1 times [2018-11-07 18:15:03,667 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:15:03,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:03,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:15:03,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:03,668 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:15:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:15:04,407 WARN L179 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 18:15:04,639 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 18:15:05,222 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:15:05,223 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:15:05,223 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:15:05,223 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 318 with the following transitions: [2018-11-07 18:15:05,223 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [191], [193], [196], [204], [212], [220], [228], [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], [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], [992], [993], [997], [1001], [1004], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:15:05,228 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:15:05,229 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:15:05,315 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:15:05,683 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:15:05,684 INFO L272 AbstractInterpreter]: Visited 161 different actions 470 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 18:15:05,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:05,689 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:15:06,076 INFO L227 lantSequenceWeakener]: Weakened 98 states. On average, predicates are now at 77.48% of their original sizes. [2018-11-07 18:15:06,077 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:15:15,044 INFO L415 sIntCurrentIteration]: We unified 316 AI predicates to 316 [2018-11-07 18:15:15,044 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:15:15,045 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:15:15,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [13] total 34 [2018-11-07 18:15:15,045 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:15:15,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 18:15:15,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 18:15:15,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:15:15,048 INFO L87 Difference]: Start difference. First operand 16307 states and 21907 transitions. Second operand 23 states. [2018-11-07 18:15:58,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:15:58,840 INFO L93 Difference]: Finished difference Result 35921 states and 49422 transitions. [2018-11-07 18:15:58,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-07 18:15:58,840 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 317 [2018-11-07 18:15:58,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:15:58,959 INFO L225 Difference]: With dead ends: 35921 [2018-11-07 18:15:58,959 INFO L226 Difference]: Without dead ends: 20825 [2018-11-07 18:15:59,011 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 335 GetRequests, 285 SyntacticMatches, 10 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=317, Invalid=1405, Unknown=0, NotChecked=0, Total=1722 [2018-11-07 18:15:59,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20825 states. [2018-11-07 18:15:59,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20825 to 20110. [2018-11-07 18:15:59,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20110 states. [2018-11-07 18:15:59,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20110 states to 20110 states and 26152 transitions. [2018-11-07 18:15:59,451 INFO L78 Accepts]: Start accepts. Automaton has 20110 states and 26152 transitions. Word has length 317 [2018-11-07 18:15:59,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:15:59,452 INFO L480 AbstractCegarLoop]: Abstraction has 20110 states and 26152 transitions. [2018-11-07 18:15:59,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 18:15:59,452 INFO L276 IsEmpty]: Start isEmpty. Operand 20110 states and 26152 transitions. [2018-11-07 18:15:59,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-11-07 18:15:59,483 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:15:59,483 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:15:59,484 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:15:59,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:59,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1770680950, now seen corresponding path program 1 times [2018-11-07 18:15:59,484 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:15:59,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:59,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:15:59,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:59,488 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:15:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:15:59,817 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:16:00,890 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 27 proven. 192 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 18:16:00,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:16:00,891 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:16:00,891 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 365 with the following transitions: [2018-11-07 18:16:00,892 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [191], [193], [196], [204], [212], [220], [228], [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], [680], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [992], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:16:00,896 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:16:00,896 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:16:01,044 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:16:01,348 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:16:01,348 INFO L272 AbstractInterpreter]: Visited 159 different actions 464 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 18:16:01,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:01,354 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:16:01,835 INFO L227 lantSequenceWeakener]: Weakened 57 states. On average, predicates are now at 77.62% of their original sizes. [2018-11-07 18:16:01,836 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:16:02,487 INFO L415 sIntCurrentIteration]: We unified 363 AI predicates to 363 [2018-11-07 18:16:02,488 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:16:02,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:16:02,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [27] imperfect sequences [5] total 30 [2018-11-07 18:16:02,488 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:16:02,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-07 18:16:02,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-07 18:16:02,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2018-11-07 18:16:02,490 INFO L87 Difference]: Start difference. First operand 20110 states and 26152 transitions. Second operand 27 states. Received shutdown request... [2018-11-07 18:16:34,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-07 18:16:34,839 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:16:34,843 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:16:34,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:16:34 BoogieIcfgContainer [2018-11-07 18:16:34,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:16:34,845 INFO L168 Benchmark]: Toolchain (without parser) took 217689.60 ms. Allocated memory was 1.5 GB in the beginning and 5.6 GB in the end (delta: 4.0 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-07 18:16:34,846 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:16:34,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1251.60 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-07 18:16:34,847 INFO L168 Benchmark]: Boogie Procedure Inliner took 206.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 743.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -868.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 18:16:34,848 INFO L168 Benchmark]: Boogie Preprocessor took 152.72 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:16:34,849 INFO L168 Benchmark]: RCFGBuilder took 5626.56 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: 268.2 MB). Peak memory consumption was 268.2 MB. Max. memory is 7.1 GB. [2018-11-07 18:16:34,849 INFO L168 Benchmark]: TraceAbstraction took 210447.05 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.3 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -675.7 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-07 18:16:34,854 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1251.60 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 206.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 743.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -868.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 152.72 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5626.56 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: 268.2 MB). Peak memory consumption was 268.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210447.05 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.3 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -675.7 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 28]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 28). Cancelled while BasicCegarLoop was constructing difference of abstraction (20110states) and FLOYD_HOARE automaton (currently 37 states, 27 states before enhancement),while ReachableStatesComputation was computing reachable states (7766 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 210.3s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 183.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1864 SDtfs, 25838 SDslu, 2434 SDs, 0 SdLazy, 33584 SolverSat, 4852 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.5s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 1281 GetRequests, 1048 SyntacticMatches, 61 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1719 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20110occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.5s AbstIntTime, 4 AbstIntIterations, 4 AbstIntStrong, 0.9974121934400142 AbsIntWeakeningRatio, 0.09409751924721985 AbsIntAvgWeakeningVarsNumRemoved, 6.808383233532934 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 1208 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 1645 NumberOfCodeBlocks, 1645 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1636 ConstructedInterpolants, 0 QuantifiedInterpolants, 2343456 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 394/677 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown